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982,081 commits

Author SHA1 Message Date
Govind Singh
ab000ea6a3 ath10k: Don't call SCM interface for statically mapped msa region
For some targets ex: QCS404, SCM permissions for MSA region is
statically configured in TrustZone fw. Add SCM call disable option
for such targets to avoid duplicate permissions.

Testing: Tested on WCN3990 HW
Tested FW: WLAN.HL.3.1-01040-QCAHLSWMTPLZ-1

Signed-off-by: Govind Singh <govinds@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:36:12 +02:00
Govind Singh
6ca71a10ae dt: bindings: add dt entry flag to skip SCM call for msa region
Add boolean context flag to disable SCM call for statically
mapped msa region.

Signed-off-by: Govind Singh <govinds@codeaurora.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:36:01 +02:00
Zhi Chen
a1769bb68a Revert "ath10k: fix DMA related firmware crashes on multiple devices"
This reverts commit 76d164f582.
PCIe hung issue was observed on multiple platforms. The issue was reproduced
when DUT was configured as AP and associated with 50+ STAs.

For QCA9984/QCA9888, the DMA_BURST_SIZE register controls the AXI burst size
of the RD/WR access to the HOST MEM.
0 - No split , RAW read/write transfer size from MAC is put out on bus
    as burst length
1 - Split at 256 byte boundary
2,3 - Reserved

With PCIe protocol analyzer, we can see DMA Read crossing 4KB boundary when
issue happened. It broke PCIe spec and caused PCIe stuck. So revert
the default value from 0 to 1.

Tested:  IPQ8064 + QCA9984 with firmware 10.4-3.10-00047
         QCS404 + QCA9984 with firmware 10.4-3.9.0.2--00044
         Synaptics AS370 + QCA9888  with firmware 10.4-3.9.0.2--00040

Signed-off-by: Zhi Chen <zhichen@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:34:21 +02:00
Wen Gong
218f646d23 ath10k: drop RX skb with invalid length for sdio
When simulate random transfer fail for sdio write and read, it crash
sometimes.

Test steps:
1. Add config and update kernel:
CONFIG_FAIL_MMC_REQUEST=y
CONFIG_FAULT_INJECTION=y
CONFIG_FAULT_INJECTION_DEBUG_FS=y

2. run simulate fail:
cd /sys/kernel/debug/mmc1/fail_mmc_request
echo 10 > probability
echo 10 > times # repeat until hitting issues

3. it crash, the act len of ath10k_htc_hdr is higher than allocate len, it cause panic:
[   99.723482] skbuff: skb_over_panic: text:00000000caa0f780 len:57013 put:57013 head:000000004116f24a data:0000000019ecb4dc tail:0xdef5 end:0x640 dev:<NULL>
[   99.737697] ------------[ cut here ]------------
[   99.742327] kernel BUG at /mnt/host/source/src/third_party/kernel/v4.19/net/core/skbuff.c:104!
[   99.750937] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[   99.831154] Process kworker/0:2 (pid: 151, stack limit = 0x00000000728010bf)
[   99.838200] CPU: 0 PID: 151 Comm: kworker/0:2 Tainted: G W 4.19.85 #48
[   99.846022] Hardware name: MediaTek krane sku0 board (DT)
[   99.851429] Workqueue: events sdio_irq_work
[   99.855614] pstate: 60000005 (nZCv daif -PAN -UAO)
[   99.860402] pc : skb_panic+0x64/0x68
[   99.863974] lr : skb_panic+0x64/0x68
[   99.867542] sp : ffffff8008833a90
[   99.870850] x29: ffffff8008833ac0 x28: ffffffe52e337370
[   99.876159] x27: ffffffe52e328a90 x26: 000000000000e0d0
[   99.881469] x25: ffffffe52e336b60 x24: 000000000000deb5
[   99.886779] x23: ffffffe52e340680 x22: ffffffe4efd47e00
[   99.892088] x21: 000000000000deb5 x20: ffffffa516d85b4c
[   99.897397] x19: ffffffa526928037 x18: 0000000000000000
[   99.902706] x17: 000000000000003c x16: ffffffa5265b6c80
[   99.908015] x15: 0000000000000006 x14: 3a76656420303436
[   99.913325] x13: 0000000000029bf0 x12: 0000000000000000
[   99.918634] x11: 0000000000000000 x10: 0000000000000000
[   99.923943] x9 : a3b907e4b2783000 x8 : a3b907e4b2783000
[   99.929253] x7 : 0000000000000000 x6 : ffffffa526f66d76
[   99.934563] x5 : 0000000000000000 x4 : 0000000000000000
[   99.939872] x3 : 000000000002a5ab x2 : ffffffe53feed918
[   99.945182] x1 : ffffffe53fee4a08 x0 : 000000000000008e
[   99.950491] Call trace:
[   99.952937]  skb_panic+0x64/0x68
[   99.956165]  skb_put+0x7c/0x84
[   99.959224]  ath10k_sdio_irq_handler+0x740/0xbb8 [ath10k_sdio]
[   99.965055]  process_sdio_pending_irqs+0x58/0x1a4
[   99.969758]  sdio_run_irqs+0x34/0x60
[   99.973329]  sdio_irq_work+0x1c/0x28
[   99.974930] cros-ec-spi spi2.0: SPI transfer timed out
[   99.976904]  process_one_work+0x210/0x410
[   99.976911]  worker_thread+0x234/0x3dc
[   99.976923]  kthread+0x120/0x130
[   99.982090] cros-ec-spi spi2.0: spi transfer failed: -110
[   99.986054]  ret_from_fork+0x10/0x18
[   99.986063] Code: aa1403e2 2a1503e4 a90023e9 97e37d1a (d4210000)
[   99.986068] ---[ end trace cb6d948c5a0fd6c7 ]---
[  100.017250] Kernel panic - not syncing: Fatal exception
[  100.018879] cros-ec-spi spi2.0: Command xfer error (err:-110)
[  100.023659] SMP: stopping secondary CPUs
[  100.023703] Kernel Offset: 0x251dc00000 from 0xffffff8008000000
[  100.023707] CPU features: 0x0,2188200c
[  100.023709] Memory Limit: none

The simulate fail of sdio is not a real sdio transter fail, it only
set an error status in mmc_should_fail_request after the transfer end,
actually the transfer is success, then sdio_io_rw_ext_helper will
return error status and stop transfer the left data. For example,
the really RX len is 286 bytes, then it will split to 2 blocks in
sdio_io_rw_ext_helper, one is 256 bytes, left is 30 bytes, if the
first 256 bytes get an error status by mmc_should_fail_request,then
the left 30 bytes will not read in this RX operation. Then when the
next RX arrive, the left 30 bytes will be considered as the header
of the read, the top 8 bytes will be considered as ath10k_htc_hdr,
but actually the 8 bytes is not the ath10k_htc_hdr, so the act_len
from this ath10k_htc_hdr is not correct, if it is a big value, such
as 57013, it will trigger skb_panic.

Drop the skb with invalid length will be reasonable.

This patch only effect sdio chips.

Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00029.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:31:59 +02:00
zhengbin
0f7ab288ad ath10k: use true,false for bool variable
Fixes coccicheck warning:

drivers/net/wireless/ath/ath10k/htt_rx.c:2143:2-31: WARNING: Assignment of 0/1 to bool variable

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:25:39 +02:00
Bjorn Andersson
57a3b60ddb ath10k: Add optional qdss clk
The WiFi firmware found on sm8150 requires that the QDSS clock is
ticking in order to operate, so add an optional clock to the binding to
allow this to be specified in the sm8150 dts and add the clock to the
list of clocks in the driver.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:24:47 +02:00
Bryan O'Donoghue
63ec5cbc31 ath10k: pci: Fix comment on ath10k_pci_dump_memory_sram
The description of ath10k_pci_dump_memory_sram() is inaccurate, an error
can never be returned, it is always the length. Update the comment to
reflect.

Fixes: 219cc084c6 ("ath10k: add memory dump support QCA9984")
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:21:48 +02:00
Bryan O'Donoghue
d239380196 ath10k: pci: Only dump ATH10K_MEM_REGION_TYPE_IOREG when safe
ath10k_pci_dump_memory_reg() will try to access memory of type
ATH10K_MEM_REGION_TYPE_IOREG however, if a hardware restart is in progress
this can crash a system.

Individual ioread32() time has been observed to jump from 15-20 ticks to >
80k ticks followed by a secure-watchdog bite and a system reset.

Work around this corner case by only issuing the read transaction when the
driver state is ATH10K_STATE_ON.

Tested-on: QCA9988 PCI 10.4-3.9.0.2-00044

Fixes: 219cc084c6 ("ath10k: add memory dump support QCA9984")
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:21:36 +02:00
zhengbin
f89ee9927a wil6210: use true,false for bool variable
Fixes coccicheck warning:

drivers/net/wireless/ath/wil6210/main.c:765:1-14: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/txrx.c:1143:1-19: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/wmi.c:1516:4-23: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/wmi.c:1523:4-23: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/wmi.c:1538:4-30: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/wmi.c:1545:4-30: WARNING: Assignment of 0/1 to bool variable

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:19:14 +02:00
zhengbin
d27c768f3b ath9k: use true,false for bool variable
Fixes coccicheck warning:

drivers/net/wireless/ath/ath9k/ar9003_aic.c:409:2-12: WARNING: Assignment of 0/1 to bool variable

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-01-26 12:19:02 +02:00
Kalle Valo
fafa7424ba First set of patches intended for v5.6
* Support new versions of the FTM FW APIs;
 * Fix an old bug in D3 (WoWLAN);
 * A couple of fixes/improvements in the receive-buffers code;
 * Fix in the debugging where we were skipping one TXQ;
 * Support new version of the beacon template FW API;
 * Print some extra information when the driver is loaded;
 * Some debugging infrastructure (aka. yoyo) updates;
 * Support for a new HW version;
 * Second phase of device configuration work started;
 * Some clean-ups;
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Merge tag 'iwlwifi-next-for-kalle-2020-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

First set of patches intended for v5.6

* Support new versions of the FTM FW APIs;
* Fix an old bug in D3 (WoWLAN);
* A couple of fixes/improvements in the receive-buffers code;
* Fix in the debugging where we were skipping one TXQ;
* Support new version of the beacon template FW API;
* Print some extra information when the driver is loaded;
* Some debugging infrastructure (aka. yoyo) updates;
* Support for a new HW version;
* Second phase of device configuration work started;
* Some clean-ups;
2020-01-26 12:10:02 +02:00
Madhuparna Bhowmik
913292c97d sched.h: Annotate sighand_struct with __rcu
This patch fixes the following sparse errors by annotating the
sighand_struct with __rcu

kernel/fork.c:1511:9: error: incompatible types in comparison expression
kernel/exit.c💯19: error: incompatible types in comparison expression
kernel/signal.c:1370:27: error: incompatible types in comparison expression

This fix introduces the following sparse error in signal.c due to
checking the sighand pointer without rcu primitives:

kernel/signal.c:1386:21: error: incompatible types in comparison expression

This new sparse error is also fixed in this patch.

Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20200124045908.26389-1-madhuparnabhowmik10@gmail.com
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
2020-01-26 10:54:47 +01:00
David S. Miller
4d8773b68e Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflict in mlx5 because changes happened to code that has
moved meanwhile.

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-26 10:40:21 +01:00
Dan Carpenter
11eb85ec42 Bluetooth: Fix race condition in hci_release_sock()
Syzbot managed to trigger a use after free "KASAN: use-after-free Write
in hci_sock_bind".  I have reviewed the code manually and one possibly
cause I have found is that we are not holding lock_sock(sk) when we do
the hci_dev_put(hdev) in hci_sock_release().  My theory is that the bind
and the release are racing against each other which results in this use
after free.

Reported-by: syzbot+eba992608adf3d796bcc@syzkaller.appspotmail.com
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-01-26 10:34:17 +02:00
Takashi Iwai
9b132f2764 Merge branch 'for-linus' into for-next
Resolve conflicts and correct the hex numbers, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-26 09:31:41 +01:00
Nicola Lunghi
b81cbf7abf ALSA: usb-audio: add quirks for Line6 Helix devices fw>=2.82
With firmware 2.82 Line6 changed the usb id of some of the Helix
devices but the quirks is still needed.

Add it to the quirk list for line6 helix family of devices.

Thanks to Jens for pointing out the missing ids.

Signed-off-by: Nicola Lunghi <nick83ola@gmail.com>
Link: https://lore.kernel.org/r/20200125150917.5040-1-nick83ola@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-26 09:29:57 +01:00
Hans de Goede
d8feb6080b ALSA: hda: Add Clevo W65_67SB the power_save blacklist
Using HDA power-saving on the Clevo W65_67SB causes the first 0.5
seconds of audio to be missing every time audio starts playing.

This commit adds the Clevo W65_67SB the power_save blacklist to avoid
this issue.

Cc: stable@vger.kernel.org
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1525104
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200125181021.70446-1-hdegoede@redhat.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-26 09:29:14 +01:00
Tony Nguyen
18a8d35863 ice: Bump version
Bump version to 0.8.2-k

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2020-01-25 21:50:23 -08:00
Md Fahad Iqbal Polash
6876fb6404 ice: Implement ethtool get/set rx-flow-hash
Provide support to change or retrieve RSS hash options for a flow type.
The supported flow-types are: tcp4, tcp6, udp4, udp6, sctp4, sctp6.

Signed-off-by: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2020-01-25 21:47:28 -08:00
Md Fahad Iqbal Polash
1c01c8c6c9 ice: Initilialize VF RSS tables
Set configuration for hardware RSS tables for VFs.

Signed-off-by: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2020-01-25 21:45:19 -08:00
Tony Nguyen
2c61054c5f ice: Optimize table usage
Attempt to optimize TCAM entries and reduce table resource usage by
searching for profiles that can be reused. Provide resource cleanup
of both hardware and software structures.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Henry Tieman <henry.w.tieman@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2020-01-25 21:42:50 -08:00
Tony Nguyen
43dbfc7bb8 ice: Enable writing filtering tables
Write the hardware tables based on the populated software structures.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Henry Tieman <henry.w.tieman@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2020-01-25 21:38:32 -08:00
Tony Nguyen
451f2c4406 ice: Populate TCAM filter software structures
Store the TCAM entry with the profile data and the VSI group in the
respective SW structures. This will be subsequently used to write out
the tables to hardware.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Henry Tieman <henry.w.tieman@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2020-01-25 21:34:36 -08:00
Linus Walleij
0282c72d30 gpio: updates for v5.6
- use platform_get_irq_optional() in gpio-altera
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Merge tag 'gpio-updates-for-v5.6-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel

gpio: updates for v5.6

- use platform_get_irq_optional() in gpio-altera
2020-01-26 01:01:55 +01:00
Linus Torvalds
2821e26f3a ARM fixes for 5.5:
- fix ftrace relocation type filtering
 - relax arch timer version check
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:

 - fix ftrace relocation type filtering

 - relax arch timer version check

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8955/1: virt: Relax arch timer version check during early boot
  ARM: 8950/1: ftrace/recordmcount: filter relocation types
2020-01-25 14:32:51 -08:00
Linus Torvalds
84809aaf78 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from David Miller:

 1) Off by one in mt76 airtime calculation, from Dan Carpenter.

 2) Fix TLV fragment allocation loop condition in iwlwifi, from Luca
    Coelho.

 3) Don't confirm neigh entries when doing ipsec pmtu updates, from Xu
    Wang.

 4) More checks to make sure we only send TSO packets to lan78xx chips
    that they can actually handle. From James Hughes.

 5) Fix ip_tunnel namespace move, from William Dauchy.

 6) Fix unintended packet reordering due to cooperation between
    listification done by GRO and non-GRO paths. From Maxim
    Mikityanskiy.

 7) Add Jakub Kicincki formally as networking co-maintainer.

 8) Info leak in airo ioctls, from Michael Ellerman.

 9) IFLA_MTU attribute needs validation during rtnl_create_link(), from
    Eric Dumazet.

10) Use after free during reload in mlxsw, from Ido Schimmel.

11) Dangling pointers are possible in tp->highest_sack, fix from Eric
    Dumazet.

12) Missing *pos++ in various networking seq_next handlers, from Vasily
    Averin.

13) CHELSIO_GET_MEM operation neds CAP_NET_ADMIN check, from Michael
    Ellerman.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (109 commits)
  firestream: fix memory leaks
  net: cxgb3_main: Add CAP_NET_ADMIN check to CHELSIO_GET_MEM
  net: bcmgenet: Use netif_tx_napi_add() for TX NAPI
  tipc: change maintainer email address
  net: stmmac: platform: fix probe for ACPI devices
  net/mlx5e: kTLS, Do not send decrypted-marked SKBs via non-accel path
  net/mlx5e: kTLS, Remove redundant posts in TX resync flow
  net/mlx5e: kTLS, Fix corner-case checks in TX resync flow
  net/mlx5e: Clear VF config when switching modes
  net/mlx5: DR, use non preemptible call to get the current cpu number
  net/mlx5: E-Switch, Prevent ingress rate configuration of uplink rep
  net/mlx5: DR, Enable counter on non-fwd-dest objects
  net/mlx5: Update the list of the PCI supported devices
  net/mlx5: Fix lowest FDB pool size
  net: Fix skb->csum update in inet_proto_csum_replace16().
  netfilter: nf_tables: autoload modules from the abort path
  netfilter: nf_tables: add __nft_chain_type_get()
  netfilter: nf_tables_offload: fix check the chain offload flag
  netfilter: conntrack: sctp: use distinct states for new SCTP connections
  ipv6_route_seq_next should increase position index
  ...
2020-01-25 14:19:32 -08:00
Linus Torvalds
f041eadad7 ARM: SoC fixes
A couple of fixes have come in that would be good to include in this
 release:
 
  - A fix for amount of memory on Beaglebone Black. Surfaced now since
    GRUB2 doesn't update memory size in the booted kernel.
 
  - A fix to make SPI interfaces work on am43x-epos-evm.
 
  - Small Kconfig fix for OPTEE (adds a depend on MMU) to avoid build
    failures.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Olof Johansson:
 "A couple of fixes have come in that would be good to include in this
  release:

   - A fix for amount of memory on Beaglebone Black. Surfaced now since
     GRUB2 doesn't update memory size in the booted kernel.

   - A fix to make SPI interfaces work on am43x-epos-evm.

   - Small Kconfig fix for OPTEE (adds a depend on MMU) to avoid build
     failures"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: dts: am43x-epos-evm: set data pin directions for spi0 and spi1
  tee: optee: Fix compilation issue with nommu
  ARM: dts: am335x-boneblack-common: fix memory size
2020-01-25 14:08:43 -08:00
Dexuan Cui
ddc9d357b9 Drivers: hv: vmbus: Ignore CHANNELMSG_TL_CONNECT_RESULT(23)
When a Linux hv_sock app tries to connect to a Service GUID on which no
host app is listening, a recent host (RS3+) sends a
CHANNELMSG_TL_CONNECT_RESULT (23) message to Linux and this triggers such
a warning:

unknown msgtype=23
WARNING: CPU: 2 PID: 0 at drivers/hv/vmbus_drv.c:1031 vmbus_on_msg_dpc

Actually Linux can safely ignore the message because the Linux app's
connect() will time out in 2 seconds: see VSOCK_DEFAULT_CONNECT_TIMEOUT
and vsock_stream_connect(). We don't bother to make use of the message
because: 1) it's only supported on recent hosts; 2) a non-trivial effort
is required to use the message in Linux, but the benefit is small.

So, let's not see the warning by silently ignoring the message.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-25 16:52:11 -05:00
Dexuan Cui
382a462217 video: hyperv_fb: Fix hibernation for the deferred IO feature
fb_deferred_io_work() can access the vmbus ringbuffer by calling
fbdefio->deferred_io() -> synthvid_deferred_io() -> synthvid_update().

Because the vmbus ringbuffer is inaccessible between hvfb_suspend()
and hvfb_resume(), we must cancel info->deferred_work before calling
vmbus_close() and then reschedule it after we reopen the channel
in hvfb_resume().

Fixes: a4ddb11d297e ("video: hyperv: hyperv_fb: Support deferred IO for Hyper-V frame buffer driver")
Fixes: 824946a8b6fb ("video: hyperv_fb: Add the support of hibernation")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Wei Hu <weh@microsoft.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-25 16:52:11 -05:00
Dexuan Cui
e2379b3032 Input: hyperv-keyboard: Add the support of hibernation
Add suspend() and resume() functions so the Hyper-V virtual keyboard
can participate in VM hibernation.

Note that the keyboard is a "wakeup" device that could abort an in-progress
hibernation if there is keyboard event.  No attempt is made to suppress this
behavior.  If desired, a sysadmin can disable the keyboard as a wakeup device
using standard mechanisms such as:

echo disabled > /sys/bus/vmbus/drivers/hyperv_keyboard/XXX/power/wakeup
(where XXX is the device's GUID)

Reviewed-by:  Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-25 16:52:11 -05:00
Tianyu Lan
d33c240d47 hv_balloon: Balloon up according to request page number
Current code has assumption that balloon request memory size aligns
with 2MB. But actually Hyper-V doesn't guarantee such alignment. When
balloon driver receives non-aligned balloon request, it produces warning
and balloon up more memory than requested in order to keep 2MB alignment.
Remove the warning and balloon up memory according to actual requested
memory size.

Fixes: f671223847 ("hv: hv_balloon: avoid memory leak on alloc_error of 2MB memory block")
Cc: stable@vger.kernel.org
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-25 16:51:49 -05:00
Olof Johansson
19d52e94e0 Late omap dts changes for v5.6 merge window
This series of changes mostly configures the cameras for dra7 and
 am437x that have been pending for few months now because of waiting
 for clock dependencies to clear. So these changes are based on earlier
 dts changes with with Tero Kristo's for-5.6-ti-clk branch merged in.
 
 Then there's a series of changes to configure powervr sgx target module
 for am335x, am437x and dra7 that have been waiting to have the rstctrl
 reset driver dependencies to clear.
 
 Also included are few minor patches to configure 1-wire and coulomb
 counter calibration interrupt for droid4.
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Merge tag 'omap-for-v5.6/dt-late-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/late

Late omap dts changes for v5.6 merge window

This series of changes mostly configures the cameras for dra7 and
am437x that have been pending for few months now because of waiting
for clock dependencies to clear. So these changes are based on earlier
dts changes with with Tero Kristo's for-5.6-ti-clk branch merged in.

Then there's a series of changes to configure powervr sgx target module
for am335x, am437x and dra7 that have been waiting to have the rstctrl
reset driver dependencies to clear.

Also included are few minor patches to configure 1-wire and coulomb
counter calibration interrupt for droid4.

* tag 'omap-for-v5.6/dt-late-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (25 commits)
  ARM: dts: omap4-droid4: Enable hdq for droid4 ds250x 1-wire battery nvmem
  ARM: dts: motorola-cpcap-mapphone: Configure calibration interrupt
  ARM: dts: Configure interconnect target module for am437x sgx
  ARM: dts: Configure sgx for dra7
  ARM: dts: Configure rstctrl reset for am335x SGX
  ARM: dts: dra7: Add ti-sysc node for VPE
  ARM: dts: dra7: add vpe clkctrl node
  ARM: dts: am43x-epos-evm: Add VPFE and OV2659 entries
  ARM: dts: am437x-sk-evm: Add VPFE and OV2659 entries
  ARM: dts: am43xx: add support for clkout1 clock
  arm: dts: dra76-evm: Add CAL and OV5640 nodes
  arm: dtsi: dra76x: Add CAL dtsi node
  arm: dts: dra72-evm-common: Add entries for the CSI2 cameras
  ARM: dts: DRA72: Add CAL dtsi node
  ARM: dts: dra7-l4: Add ti-sysc node for CAM
  ARM: OMAP: DRA7xx: Make CAM clock domain SWSUP only
  ARM: dts: dra7: add cam clkctrl node
  ARM: dts: Add omap3-echo
  ARM: dts: Add dtsi files for AM3703, AM3715 and DM3725
  ARM: dts: am335x-icev2: Add support for OSD9616P0899-10 at i2c0
  ...

Link: https://lore.kernel.org/r/pull-1579896427-50330@atomide.com-3
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-01-25 13:28:52 -08:00
Olof Johansson
955d8f3ecb Late changes for omap secure accelerators for v5.6 merge window
A series of changes to configure secure accelerators for omap4 & 5
 to finally get hardware random number generator working.
 
 Apologies on a late pull request on these changes, but this pull
 request could not be sent out earlier because of a dependency to
 recent clock changes. This is based on earlier changes to drop omap
 legacy platform data with Tero Kristo's for-5.6-ti-clk branch merged
 in.
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Merge tag 'omap-for-v5.6/ti-sysc-drop-pdata-crypto-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/late

Late changes for omap secure accelerators for v5.6 merge window

A series of changes to configure secure accelerators for omap4 & 5
to finally get hardware random number generator working.

Apologies on a late pull request on these changes, but this pull
request could not be sent out earlier because of a dependency to
recent clock changes. This is based on earlier changes to drop omap
legacy platform data with Tero Kristo's for-5.6-ti-clk branch merged
in.

* tag 'omap-for-v5.6/ti-sysc-drop-pdata-crypto-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (98 commits)
  ARM: OMAP2+: Drop legacy platform data for omap4 des
  ARM: OMAP2+: Drop legacy platform data for omap4 sham
  ARM: OMAP2+: Drop legacy platform data for omap4 aes
  ARM: dts: Configure interconnect target module for omap4 des
  ARM: dts: Configure interconnect target module for omap4 aes
  ARM: dts: Configure interconnect target module for omap4 sham
  ARM: dts: Configure omap5 rng to probe with ti-sysc
  ARM: dts: Configure omap4 rng to probe with ti-sysc
  ARM: dts: Add missing omap5 secure clocks
  ARM: dts: Add missing omap4 secure clocks
  clk: ti: clkctrl: Fix hidden dependency to node name
  clk: ti: add clkctrl data dra7 sgx
  clk: ti: omap5: Add missing AESS clock
  clk: ti: dra7: fix parent for gmac_clkctrl
  clk: ti: dra7: add vpe clkctrl data
  clk: ti: dra7: add cam clkctrl data
  dt-bindings: clock: Move ti-dra7-atl.h to dt-bindings/clock
  dmaengine: ti: omap-dma: don't allow a null od->plat pointer to be dereferenced
  ARM: OMAP2+: Drop legacy platform data for sdma
  ARM: OMAP2+: Drop legacy init for sdma
  ...

Link: https://lore.kernel.org/r/pull-1579896427-50330@atomide.com-2
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-01-25 13:28:12 -08:00
Olof Johansson
d8430df172 Randconfig build fix for recent SoC changes for v5.6
We can get build failures if let's say if only am335x SoC is selected.
 Let's fix this by always building secure-common.
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Merge tag 'omap-for-v5.6/soc-build-fix-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/soc

Randconfig build fix for recent SoC changes for v5.6

We can get build failures if let's say if only am335x SoC is selected.
Let's fix this by always building secure-common.

* tag 'omap-for-v5.6/soc-build-fix-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Fix undefined reference to omap_secure_init

Link: https://lore.kernel.org/r/pull-1579896427-50330@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-01-25 13:25:42 -08:00
Wenwen Wang
fa865ba183 firestream: fix memory leaks
In fs_open(), 'vcc' is allocated through kmalloc() and assigned to
'atm_vcc->dev_data.' In the following execution, if an error occurs, e.g.,
there is no more free channel, an error code EBUSY or ENOMEM will be
returned. However, 'vcc' is not deallocated, leading to memory leaks. Note
that, in normal cases where fs_open() returns 0, 'vcc' will be deallocated
in fs_close(). But, if fs_open() fails, there is no guarantee that
fs_close() will be invoked.

To fix this issue, deallocate 'vcc' before the error code is returned.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 22:01:51 +01:00
Andy Shevchenko
604c521259 rtc: cmos: Refactor code by using the new dmi_get_bios_year() helper
Refactor code by using the new dmi_get_bios_year() helper instead of
open coding its functionality. This also makes logic slightly clearer.

No changes intended.

Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200123131437.28157-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-01-25 21:55:14 +01:00
Andy Shevchenko
5848ad2f1b rtc: cmos: Use predefined value for RTC IRQ on legacy x86
When legacy devices are present on x86 machine, the RTC IRQ has
a dedicated pre-defined value. Use it instead of hard coded number.

Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200123131437.28157-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-01-25 21:55:12 +01:00
Andy Shevchenko
b6da197a2e rtc: cmos: Stop using shared IRQ
As reported by Guilherme G. Piccoli:

---8<---8<---8<---

The rtc-cmos interrupt setting was changed in the commit 079062b28f
("rtc: cmos: prevent kernel warning on IRQ flags mismatch") in order
to allow shared interrupts; according to that commit's description,
some machine got kernel warnings due to the interrupt line being shared
between rtc-cmos and other hardware, and rtc-cmos didn't allow IRQ sharing
that time.

After the aforementioned commit though it was observed a huge increase
in lost HPET interrupts in some systems, observed through the following
kernel message:

[...] hpet1: lost 35 rtc interrupts

After investigation, it was narrowed down to the shared interrupts
usage when having the kernel option "irqpoll" enabled. In this case,
all IRQ handlers are called for non-timer interrupts, if such handlers
are setup in shared IRQ lines. The rtc-cmos IRQ handler could be set to
hpet_rtc_interrupt(), which will produce the kernel "lost interrupts"
message after doing work - lots of readl/writel to HPET registers, which
are known to be slow.

Although "irqpoll" is not a default kernel option, it's used in some contexts,
one being the kdump kernel (which is an already "impaired" kernel usually
running with 1 CPU available), so the performance burden could be considerable.
Also, the same issue would happen (in a shorter extent though) when using
"irqfixup" kernel option.

In a quick experiment, a virtual machine with uptime of 2 minutes produced
>300 calls to hpet_rtc_interrupt() when "irqpoll" was set, whereas without
sharing interrupts this number reduced to 1 interrupt. Machines with more
hardware than a VM should generate even more unnecessary HPET interrupts
in this scenario.

---8<---8<---8<---

After looking into the rtc-cmos driver history and DSDT table from
the Microsoft Surface 3, we may notice that Hans de Goede submitted
a correct fix (see dependency below). Thus, we simply revert
the culprit commit.

Fixes: 079062b28f ("rtc: cmos: prevent kernel warning on IRQ flags mismatch")
Depends-on: a1e23a42f1 ("rtc: cmos: Do not assume irq 8 for rtc when there are no legacy irqs")
Reported-by: Guilherme G. Piccoli <gpiccoli@canonical.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200123131437.28157-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-01-25 21:54:57 +01:00
Dmitry Osipenko
4c4ab451ae rtc: tps6586x: Use IRQ_NOAUTOEN flag
The IRQ_NOAUTOEN flag tells interrupt core that interrupt shall not be
auto-enabled at the time of requesting interrupt. This is a minor clean-up
change that doesn't fix any problems.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20200106015615.12602-1-digetx@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-01-25 21:50:18 +01:00
David S. Miller
6badad1c1d Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net:

1) Missing netlink attribute sanity check for NFTA_OSF_DREG,
   from Florian Westphal.

2) Use bitmap infrastructure in ipset to fix KASAN slab-out-of-bounds
   reads, from Jozsef Kadlecsik.

3) Missing initial CLOSED state in new sctp connection through
   ctnetlink events, from Jiri Wiesner.

4) Missing check for NFT_CHAIN_HW_OFFLOAD in nf_tables offload
   indirect block infrastructure, from wenxu.

5) Add __nft_chain_type_get() to sanity check family and chain type.

6) Autoload modules from the nf_tables abort path to fix races
   reported by syzbot.

7) Remove unnecessary skb->csum update on inet_proto_csum_replace16(),
   from Praveen Chaudhary.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 21:40:39 +01:00
Paul E. McKenney
59d8cc6b2e rcu: Forgive slow expedited grace periods at boot time
Boot-time processing often loops in the kernel longer than one might
prefer, which can prevent expedited grace periods from completing in
a timely manner.  This in turn triggers a splat In nohz_full CPUs  One
could argue that long-looping code should be fixed, but on the other hand,
boot time is a bit special.

This commit therefore removes the splat.  Later commits will add the
splat back in, but in a way that removes false positives.

Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2020-01-25 12:00:40 -08:00
Dillon Brock
7f04c71f1f IB/opa_vnic: Spelling correction of 'erorr' to 'error'
Correcting a minor spelling mistake in the comments.

Link: https://lore.kernel.org/r/20200118162542.15188-1-dab9861@gmail.com
Signed-off-by: Dillon Brock <dab9861@gmail.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-25 15:37:56 -04:00
Nathan Chancellor
79ba4f9310 IB/hfi1: Fix logical condition in msix_request_irq
Clang warns:

drivers/infiniband/hw/hfi1/msix.c:136:22: warning: overlapping
comparisons always evaluate to false [-Wtautological-overlap-compare]
        if (type < IRQ_SDMA && type >= IRQ_OTHER)
            ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
1 warning generated.

It is impossible for something to be less than 0 (IRQ_SDMA) and greater
than or equal to 3 (IRQ_OTHER) at the same time. A logical OR should
have been used to keep the same logic as before.

Link: https://lore.kernel.org/r/20200116222658.5285-1-natechancellor@gmail.com
Link: https://github.com/ClangBuiltLinux/linux/issues/841
Fixes: 13d2a8384b ("IB/hfi1: Decouple IRQ name from type")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-25 15:33:53 -04:00
Jason Gunthorpe
13e0af1801 RDMA/cm: Remove CM message structs
All accesses now use the new IBA acessor scheme, so delete the structs
entirely and generate the structures from the schema file.

Link: https://lore.kernel.org/r/20200116170037.30109-8-jgg@ziepe.ca
Tested-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-25 15:11:37 -04:00
Jason Gunthorpe
4ca662a30a RDMA/cm: Use IBA functions for complex structure members
Use a Coccinelle spatch to replace CM structure members used as
structures, arrays, or pointers with IBA_GET/SET versions. Applied with

$ spatch --sp-file edits.sp --in-place drivers/infiniband/core/cm.c

The spatch file was generated using the template pattern:

@@
expression src;
expression len;
{struct} *msg;
@@
- memcpy(msg->{old_name}, src, len)
+ IBA_SET_MEM({new_name}, msg, src, len)
@@
{struct} *msg;
identifier x;
@@
- msg->{old_name}.x
+ IBA_GET_MEM_PTR({new_name}, msg)->x
@@
{struct} *msg;
@@
- &msg->{old_name}
+ IBA_GET_MEM_PTR({new_name}, msg)

For GIDs:
@@
{struct} *msg;
@@
- msg->{old_name}
+ *IBA_GET_MEM_PTR({new_name}, msg)

For non-GIDs:
@@
{struct} *msg;
@@
- msg->{old_name}
+ IBA_GET_MEM_PTR({new_name}, msg)

Iterated for every remaining IBA_CHECK_OFF()/IBA_CHECK_GET()
pairing. Touched up with clang-format after.

Link: https://lore.kernel.org/r/20200116170037.30109-7-jgg@ziepe.ca
Tested-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-25 15:06:01 -04:00
Jason Gunthorpe
91b60a7128 RDMA/cm: Use IBA functions for simple structure members
Use a Coccinelle spatch script to replace use of simple CM structure
members with IBA_GET/SET versions. Applied with

$ spatch --sp-file edits.sp --in-place drivers/infiniband/core/cm.c

The spatch file was generated using the template pattern:

@@
expression val;
{struct} *msg;
@@
- msg->{old_name} = val
+ IBA_SET({new_name}, msg, be{bits}_to_cpu(val))
@@
{struct} *msg;
@@
- msg->{old_name}
+ cpu_to_be{bits}(IBA_GET({new_name}, msg))

Iterated for every IBA_CHECK_OFF that isn't a CM_FIELD_MLOC.

And the below iterated over all byte sizes to remove doubled byte swaps:

@@
expression val;
@@
-be{bits}_to_cpu(cpu_to_be{bits}(val))
+val

(and __be_to_cpu and ntoh varients)

Touched up with clang-format after.

Link: https://lore.kernel.org/r/20200116170037.30109-6-jgg@ziepe.ca
Tested-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-25 15:06:00 -04:00
Jason Gunthorpe
01adb7f46f RDMA/cm: Use IBA functions for swapping get/set acessors
Use a Coccinelle spatch script to replace CM helper functions that
return/accept BE values with IBA_GET/SET versions. Applied with

$ spatch --sp-file edits.sp --in-place drivers/infiniband/core/cm.c

The spatch file was generated using the template pattern:

@@
expression val;
{struct} *msg;
@@
- {old_setter}(msg, val)
+ IBA_SET({new_name}, msg, be{bits}_to_cpu(val))
@@
{struct} *msg;
@@
- {old_getter}(msg)
+ cpu_to_be{bits}(IBA_GET({new_name}, msg))

Iterated for every IBA_CHECK_GET_BE()/IBA_CHECK_SET_BE() pairing.

And the below iterated over all byte sizes to remove doubled byte swaps:

@@
expression val;
@@
-be{bits}_to_cpu(cpu_to_be{bits}(val))
+val

(and __be_to_cpu and ntoh varients)

Touched up with clang-format after.

Link: https://lore.kernel.org/r/20200116170037.30109-5-jgg@ziepe.ca
Tested-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-25 15:06:00 -04:00
Jason Gunthorpe
b6bbee6889 RDMA/cm: Use IBA functions for simple get/set acessors
Use a Coccinelle spatch to replace CM helper functions with IBA_GET/SET
versions. Applied with

$ spatch --sp-file edits.sp --in-place drivers/infiniband/core/cm.c

The spatch file was generated using the template pattern:

@@
expression val;
{struct} *msg;
@@
- {old_setter}
+ IBA_SET({new_name}, msg, val)
@@
{struct} *msg;
@@
- {old_getter}
+ IBA_GET({new_name}, msg)

Iterated for every IBA_CHECK_GET()/IBA_CHECK_GET() pairing. Touched up
with clang-format after.

Link: https://lore.kernel.org/r/20200116170037.30109-4-jgg@ziepe.ca
Tested-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-25 15:05:59 -04:00
Leon Romanovsky
d05d4ac4c9 RDMA/cm: Add SET/GET implementations to hide IBA wire format
There is no separation between RDMA-CM wire format as it is declared in
IBTA and kernel logic which implements needed support. Such situation
causes to many mistakes in conversion between big-endian (wire format)
and CPU format used by kernel. It also mixes RDMA core code with
combination of uXX and beXX variables.

The idea that all accesses to IBA definitions will go through special
GET/SET macros to ensure that no conversion mistakes are made. The
shifting and masking required to read the value is automatically deduced
using the field offset description from the tables in the IBA
specification.

This starts with the CM MADs described in IBTA release 1.3 volume 1.

To confirm that the new macros behave the same as the old accessors a
self-test is included in this patch.

Each macro replacing a straightforward struct field compile-time tests
that the new field has the same offsetof() and width as the old field.

For the fields with accessor functions a runtime test, the 'all ones'
value is placed in a dummy message and read back in several ways to
confirm that both approaches give identical results.

Later patches in this series delete the self test.

This creates a tested table of new field name, old field name(s) and some
meta information like BE coding for the functions which will be used in
the next patches.

Link: https://lore.kernel.org/r/20200116170037.30109-3-jgg@ziepe.ca
Link: https://lore.kernel.org/r/20191212093830.316934-5-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Tested-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-25 15:05:59 -04:00
Jason Gunthorpe
792a7c1f2e RDMA/cm: Add accessors for CM_REQ transport_type
Access the two fields through wrappers, like all other fields, to make it
clearer what is happening.

Link: https://lore.kernel.org/r/20200116170037.30109-2-jgg@ziepe.ca
Tested-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-25 15:05:59 -04:00