* OMAP: fix analog tv-out when using omapdrm
* fsl: Fix kernel crash when diu_ops is not implemented
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Merge tag 'fbdev-fixes-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull two fbdev fixes from Tomi Valkeinen:
- OMAP: fix analog tv-out when using omapdrm
- fsl: Fix kernel crash when diu_ops is not implemented
* tag 'fbdev-fixes-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
OMAPDSS: fix timings for VENC to match what omapdrm expects
video: fbdev: fsl: Fix kernel crash when diu_ops is not implemented
device->platform_data and platform_device->resource are never used
and remain NULL through their entire life. Drops the kfree() calls
for them from the device release method.
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
When shutting down the device, the struct ser_cardstate must not be
kfree()d immediately after the call to platform_device_unregister()
since the embedded struct platform_device is still in use.
Move the kfree() call to the release method instead.
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Fixes: 2869b23e4b ("drivers/isdn/gigaset: new M101 driver (v2)")
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
These checks do nothing useful to protect the code from races. On the
other hand if the old code has been masking a real bug we would like to
know about it.
The check for tiocmset is kept because it is valid for a tty driver to
have a NULL tiocmset method. That in itself is probably a mistake given
modern coding practices - but needs fixing in the tty layer.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit f34d7a5b70 ("tty: The big operations rework") changed
tty->driver to tty->ops but left NULL checks for tty->driver untouched.
Fix.
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
[pebolle: removed Fixes tag]
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
The problem here is that at the end of the loop we test for if
idc->vnic_wait_limit is zero, but since idc->vnic_wait_limit-- is a
post-op, it actually ends up set to (u8)-1. I have fixed this by
moving the decrement inside the loop.
Fixes: 486a5bc77a ('qlcnic: Add support for 83xx suspend and resume.')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We test for if "tries" is zero at the end but "tries--" is a post-op so
it will end with "tries" set to -1. I have changed it to a pre-op
instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The problem here is that after the loop we test for "if (!i) " but
because "i--" is a post-op we exit with i set to -1. I have fixed this
by changing it to a pre-op instead. I had to change the starting value
from 3 to 4 so that we still iterate 3 times.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
At the end of the loop we test "if (!count)" but because "count--" is
a post-op then the loop will end with count set to -1. I have fixed
this by changing it to --count.
Fixes: c5aa9e3b81 ('amd-xgbe: Initial AMD 10GbE platform driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are two issue here.
1) cnt starts as maxloop + 1 so all these loops iterate one more time
than intended.
2) At the end of the loop we test for "if (maxloop && !cnt)" but for
the first two loops, we end with cnt equal to -1. Changing this to
a pre-op means we end with cnt set to 0.
Fixes: cae86d4a4e ('mISDN: Add driver for Infineon ISDN chipset family')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The function can return negative values, so its result should
be assigned to signed variable.
The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].
[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107
Fixes: fc48866f7 ('net/mlx4: Adapt code for N-Port VF')
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Reported-by: Dmitry Vyukov <dvyukov@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ethernet AVB does not support 10 Mbps transfer speed.
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The driver never calls cpu_to_edmac() when writing the descriptor address
and edmac_to_cpu() when reading it, although it should -- fix this.
Note that the frame/buffer length descriptor field accesses also need fixing
but since they are both 16-bit we can't use {cpu|edmac}_to_{edmac|cpu}()...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For the little-endian SH771x kernels the driver has to byte-swap the RX/TX
buffers, however yet unset physcial address from the TX descriptor is used
to call sh_eth_soft_swap(). Use 'skb->data' instead...
Fixes: 31fcb99d99 ("net: sh_eth: remove __flush_purge_region")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The way the mode probing works is this:
1. All modes currently on the mode list are marked as UNVERIFIED
2. New modes are on the probed_modes list (they start with
status OK)
3. Modes are moved from the probed_modes list to the actual
mode list. If a mode already on the mode list is deemed
to match one of the probed modes, the duplicate is dropped
and the mode status updated to OK. After this the
probed_modes list will be empty.
4. All modes on the mode list are verified to not violate any
constraints. Any that do are marked as such.
5. Any mode left with a non-OK status is pruned from the list,
with an appropriate debug message.
What all this means is that any mode on the original list that
didn't have a duplicate on the probed_modes list, should be left
with status UNVERFIED (or previously could have been left with
some other status, but never OK).
I broke that in
commit 05acaec334 ("drm: Reorganize probed mode validation")
by always assigning something to the mode->status during the validation
step. So any mode from the old list that still passed the validation
would be left on the list with status OK in the end.
Fix this by not doing the basic mode validation unless the mode
already has status OK (meaning it came from the probed_modes list,
or at least a duplicate of it was on that list). This way we will
correctly prune away any mode from the old mode list that didn't
appear on the probed_modes list.
Cc: stable@vger.kernel.org
Cc: Adam Jackson <ajax@redhat.com>
Fixes: 05acaec334 ("drm: Reorganize probed mode validation")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449177255-9515-2-git-send-email-ville.syrjala@linux.intel.com
Testcase: igt/kms_force_connector_basic/prune-stale-modes
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93332
[danvet: Also applying to drm-misc to avoid too much conflict hell -
there's a big pile of patches from Ville on top of this one.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Two patches, one to fix the touchscreen axis on one Allwinner board, and
the other one fixing a mutex unlocking issue on one error path in the RSB
driver.
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Merge tag 'sunxi-fixes-for-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes
Merge "Allwinner fixes for 4.4" from Maxime Ripard:
Allwinner fixes for 4.4
Two patches, one to fix the touchscreen axis on one Allwinner board, and
the other one fixing a mutex unlocking issue on one error path in the RSB
driver.
* tag 'sunxi-fixes-for-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
bus: sunxi-rsb: unlock on error in sunxi_rsb_read()
ARM: dts: sunxi: sun6i-a31s-primo81.dts: add touchscreen axis swapping property
Here are some i915 fixes for v4.4, sorry for being late this week.
* tag 'drm-intel-fixes-2015-12-11' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Do a better job at disabling primary plane in the noatomic case.
drm/i915/skl: Double RC6 WRL always on
drm/i915/skl: Disable coarse power gating up until F0
drm/i915: Remove incorrect warning in context cleanup
Commit 3365711df0 ("sh_eth: WARN on access to a register not implemented in
in a particular chip") added WARN_ON() to sh_eth_{read|write}(), thus making
it unacceptable for these functions to be *inline* anymore. Remove *inline*
and move the functions from the header to the driver itself. Below is our
code economy with ARM gcc 4.7.3:
$ size drivers/net/ethernet/renesas/sh_eth.o{~,}
text data bss dec hex filename
32489 1140 0 33629 835d drivers/net/ethernet/renesas/sh_eth.o~
25413 1140 0 26553 67b9 drivers/net/ethernet/renesas/sh_eth.o
Suggested-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
dwmac-sunxi has 2 callbacks that were called from stmmac_platform as
part of the probe and remove sequences.
Ater the conversion of dwmac-sunxi into a standalone platform driver,
the .init function is called before calling into the stmmac driver
core, but .exit is not called to clean up if stmmac returns an error.
This patch fixes the probe error path. This properly cleans up and
releases resources when the driver core fails to probe.
Cc: Joachim Eastwood <manabian@gmail.com>
Fixes: 9a9e9a1ede ("stmmac: dwmac-sunxi: turn setup callback into a
probe function")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
mdiobus_alloc() might return NULL, but its return value is not
checked in mdio_mux_init(). This could potentially lead to a NULL
pointer dereference. Fix it by checking the return value
Fixes: 0ca2997d14 ("netdev/of/phy: Add MDIO bus multiplexer support.")
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Not doing so is a bug and might trigger a BUG_ON in
handle_mm_fault(). So add the proper permission checks
before calling into mm code.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-By: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The handle_mm_fault function expects the caller to do the
access checks. Not doing so and calling the function with
wrong permissions is a bug (catched by a BUG_ON).
So fix this bug by adding proper access checking to the io
page-fault code in the AMD IOMMUv2 driver.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-By: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Currently the provided initial value for bcm2835_gpio_direction_output
has no effect. So fix this issue by changing the value before
changing the GPIO direction. As a result we need to move the function below
bcm2835_gpio_set.
Suggested-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Fixes: e1b2dc70cd ("pinctrl: add bcm2835 driver")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
omap_fbdev always creates a framebuffer with ARGB8888 pixel format. On
OMAP3 we have VIDEO1 overlay that does not support ARGB8888, and on
OMAP2 none of the overlays support ARGB888.
This patch changes the omap_fbdev's fb to XRGB8888, which is supported
by all platforms.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
printf() has a dedicated specifier to print MAC addresses. Use it instead of
pushing each byte via stack.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mark address pointer with __iomem in the IO accessors.
Otherwise we will get a sparse complain like following
.../hns/hns_dsaf_reg.h:991:36: warning: incorrect type in argument 1 (different address spaces)
.../hns/hns_dsaf_reg.h:991:36: expected unsigned char [noderef] [usertype] <asn:2>*base
.../hns/hns_dsaf_reg.h:991:36: got void *base
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull timer fix from Thomas Gleixner:
"A single fix to unbreak a clocksource driver which has more than 32bit
counter width"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: Mmio: remove artificial 32bit limitation
Only 2 small fpga driver fixes here, both have been in linux-next for a
while, and resolve some reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull fpga driver fixes from Greg KH:
"Only two small fpga driver fixes here, both have been in linux-next
for a while, and resolve some reported issues"
* tag 'char-misc-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
fpga manager: Fix firmware resource leak on error
fpga manager: remove label
Here are a few staging and IIO driver fixes for 4.4-rc5.
All of them resolve reported problems and have been in linux-next for a
while. Nothing major here, just small fixes where needed.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are a few staging and IIO driver fixes for 4.4-rc5.
All of them resolve reported problems and have been in linux-next for
a while. Nothing major here, just small fixes where needed"
* tag 'staging-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: lustre: echo_copy.._lsm() dereferences userland pointers directly
iio: adc: spmi-vadc: add missing of_node_put
iio: fix some warning messages
iio: light: apds9960: correct ->last_busy count
iio: lidar: return -EINVAL on invalid signal
staging: iio: dummy: complete IIO events delivery to userspace
Here are a number of small USB fixes for 4.4-rc5. All of them have been
in linux-next. The majority are gadget and phy issues, with a few new
quirks and device ids added as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
"Here are a number of small USB fixes for 4.4-rc5. All of them have
been in linux-next. The majority are gadget and phy issues, with a
few new quirks and device ids added as well"
* tag 'usb-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (32 commits)
USB: add quirk for devices with broken LPM
xhci: fix usb2 resume timing and races.
usb: musb: fail with error when no DMA controller set
usb: gadget: uvc: fix permissions of configfs attributes
usb: musb: core: Fix pm runtime for deferred probe
usb: phy: msm: fix a possible NULL dereference
USB: host: ohci-at91: fix a crash in ohci_hcd_at91_overcurrent_irq
usb: Quiet down false peer failure messages
usb: xhci: fix config fail of FS hub behind a HS hub with MTT
xhci: Fix memory leak in xhci_pme_acpi_rtd3_enable()
usb: Use the USB_SS_MULT() macro to decode burst multiplier for log message
USB: whci-hcd: add check for dma mapping error
usb: core : hub: Fix BOS 'NULL pointer' kernel panic
USB: quirks: Apply ALWAYS_POLL to all ELAN devices
usb-storage: Fix scsi-sd failure "Invalid field in cdb" for USB adapter JMicron
USB: quirks: Fix another ELAN touchscreen
usb: dwc3: gadget: don't prestart interrupt endpoints
USB: serial: Another Infineon flash loader USB ID
USB: cdc_acm: Ignore Infineon Flash Loader utility
USB: cp210x: Remove CP2110 ID from compatibility list
...
Properly protect the RCU dereference in iwl_mvm_get_key_sta_id() when
coming from iwl_mvm_update_tkip_key() which cannot hold the mvm->mutex
by moving the call into the RCU critical section.
Modify the check to use rcu_dereference_check() to permit this.
Fixes: 9513c5e18a ("iwlwifi: mvm: Avoid dereferencing sta if it was already flushed")
Reported-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The 7260 devices aren't going to be updated for completely new
firmware versions any more (only bugfixes), and haven't been
since API version 17. Encode that in the data structures to
avoid trying to load FW images that will never exist.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
If an earlycon console driver needs to acquire the uart_port.lock
spinlock for serial console output, and CONFIG_DEBUG_SPINLOCK=y:
BUG: spinlock bad magic on CPU#0, swapper/0
lock: sci_ports+0x0/0x3480, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
CPU: 0 PID: 0 Comm: swapper Not tainted 4.4.0-rc2-koelsch-g62ea5edf143bb1d0-dirty #2083
Hardware name: Generic R8A7791 (Flattened Device Tree)
[<c00173a0>] (unwind_backtrace) from [<c0013094>] (show_stack+0x10/0x14)
[<c0013094>] (show_stack) from [<c01f2338>] (dump_stack+0x70/0x8c)
[<c01f2338>] (dump_stack) from [<c00702d8>] (do_raw_spin_lock+0x20/0x190)
[<c00702d8>] (do_raw_spin_lock) from [<c0267590>] (serial_console_write+0x4c/0x130)
[<c0267590>] (serial_console_write) from [<c00734c4>] (call_console_drivers.constprop.13+0xc8/0xec)
[<c00734c4>] (call_console_drivers.constprop.13) from [<c0074ef0>] (console_unlock+0x354/0x440)
[<c0074ef0>] (console_unlock) from [<c0075bb4>] (register_console+0x2a0/0x394)
[<c0075bb4>] (register_console) from [<c06cb750>] (of_setup_earlycon+0x90/0xa4)
[<c06cb750>] (of_setup_earlycon) from [<c06cfb60>] (setup_of_earlycon+0x118/0x13c)
[<c06cfb60>] (setup_of_earlycon) from [<c06b34ac>] (do_early_param+0x64/0xb4)
[<c06b34ac>] (do_early_param) from [<c00472c0>] (parse_args+0x254/0x350)
[<c00472c0>] (parse_args) from [<c06b3860>] (parse_early_options+0x2c/0x3c)
[<c06b3860>] (parse_early_options) from [<c06b389c>] (parse_early_param+0x2c/0x40)
[<c06b389c>] (parse_early_param) from [<c06b5b08>] (setup_arch+0x520/0xaf0)
[<c06b5b08>] (setup_arch) from [<c06b3948>] (start_kernel+0x94/0x370)
[<c06b3948>] (start_kernel) from [<40008090>] (0x40008090)
Initialize the spinlock in of_setup_earlycon() and register_earlycon(),
to fix this for both DT-based and legacy earlycon. If the driver would
reinitialize the spinlock again, this is harmless, as it's allowed to
reinitialize an unlocked spinlock.
Alternatives are:
- Drivers having an early_serial_console_write() that only performs
the core functionality of serial_console_write(), without acquiring
the lock (which may be unsafe, depending on the hardware),
- Drivers initializing the spinlock in their private earlycon setup
functions.
As uart_port is owned by generic serial_core, and uart_port.lock is
initialized by uart_add_one_port() for the normal case, this can better
be handled in the earlycon core.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Reported-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes an issue that the "length" of scatterlist should be
set using sg_dma_len(). Otherwise, a dmaengine driver cannot work
correctly if CONFIG_NEED_SG_DMA_LENGTH=y.
Fixes: 7b39d90184 (serial: sh-sci: Fix NULL pointer dereference if HIGHMEM is enabled)
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 40d5e0905a ("n_tty: Fix EOF push handling") fixed EOF push
for reads. However, that approach still allows a condition mismatch
between poll() and read(), where poll() returns POLLIN but read()
blocks. This state can happen when a previous read() returned because
the user buffer was full and the next character was an EOF not at the
beginning of the line. While the next read() will properly identify
the condition and advance the read buffer tail without improperly
indicating an EOF file condition (ie., read() will not mistakenly
return 0), poll() will mistakenly indicate POLLIN.
Although a possible solution would be to peek at the input buffer
in n_tty_poll(), the better solution in this patch is to eat the
EOF during the previous read() (ie., fix the problem by eliminating
the condition).
The current canon line buffer copy limits the scan for next end-of-line
to the smaller of either,
a. the remaining user buffer size
b. completed lines in the input buffer
When the remaining user buffer size is exactly one less than the
end-of-line marked by EOF push, the EOF is not scanned nor skipped
but left for subsequent reads. In the example below, the scan
index 'eol' has stopped at the EOF because it is past the scan
limit of 5 (not because it has found the next set bit in read_flags)
user buffer [*nr = 5] _ _ _ _ _
read_flags 0 0 0 0 0 1
input buffer h e l l o [EOF]
^ ^
/ /
tail eol
result: found = 0, tail += 5, *nr += 5
Instead, allow the scan to peek ahead 1 byte (while still limiting the
scan to completed lines in the input buffer). For the example above,
result: found = 1, tail += 6, *nr += 5
Because the scan limit is now bumped +1 byte, when the scan is
completed, the tail advance and the user buffer copy limit is
re-clamped to *nr when EOF is _not_ found.
Fixes: 40d5e0905a ("n_tty: Fix EOF push handling")
Cc: <stable@vger.kernel.org> # 3.12+
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The register offset must be shifted by regshift, otherwise the
baudrate is not set. I missed the issue probably because the
divisor register was already set by the boot loader.
Fixes: 1a8d2903cb ("serial: 8250_uniphier: add UniPhier serial driver")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are a bunch of small bug fixes for various ARM platforms, nothing
really sticks out this week, most of either fixes bugs in code that was
just added in 4.4, or that has been broken for many years without anyone
noticing.
at91/sama5d2
- fix sama5de hardware setup of sd/mmc interface
- proper selection of pinctrl drivers. PIO4 is necessary for sama5d2
berlin
- fix incorrect clock input for SDIO
exynos
- Fix potential NULL pointer dereference in Exynos PMU driver.
imx
- Fix vf610 SAI clock configuration bug which is discovered by
the newly added master mode support in SAI audio driver.
- Fix buggy L2 cache latency values in vf610 device trees, which may
cause system hang when cpu runs at a higher frequency.
ixp4xx
- fix prototypes for readl/writel functions
ls2080a
- use little-endian register access for GPIO and SDHCI
omap
- Fix clock source for ARM TWD and global timers on am437x
- Always select REGULATOR_FIXED_VOLTAGE for omap2+ instead of
when MACH_OMAP3_PANDORA is selected
- Fix SPI DMA handles for dm816x as only some were mapped
- Fix up mbox cells for dm816x to make mailbox usable
pxa
- use PWM lookup table for all ezx machines
s3c24xx
- Remove incorrect __init annotation from s3c24xx cpufreq driver structures.
versatile
- fix PCI IRQ mapping on Versatile PB
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"Here are a bunch of small bug fixes for various ARM platforms, nothing
really sticks out this week, most of either fixes bugs in code that
was just added in 4.4, or that has been broken for many years without
anyone noticing.
at91/sama5d2:
- fix sama5de hardware setup of sd/mmc interface
- proper selection of pinctrl drivers. PIO4 is necessary for sama5d2
berlin:
- fix incorrect clock input for SDIO
exynos:
- Fix potential NULL pointer dereference in Exynos PMU driver.
imx:
- Fix vf610 SAI clock configuration bug which is discovered by the
newly added master mode support in SAI audio driver.
- Fix buggy L2 cache latency values in vf610 device trees, which may
cause system hang when cpu runs at a higher frequency.
ixp4xx:
- fix prototypes for readl/writel functions
ls2080a:
- use little-endian register access for GPIO and SDHCI
omap:
- Fix clock source for ARM TWD and global timers on am437x
- Always select REGULATOR_FIXED_VOLTAGE for omap2+ instead of when
MACH_OMAP3_PANDORA is selected
- Fix SPI DMA handles for dm816x as only some were mapped
- Fix up mbox cells for dm816x to make mailbox usable
pxa:
- use PWM lookup table for all ezx machines
s3c24xx:
- Remove incorrect __init annotation from s3c24xx cpufreq driver
structures.
versatile:
- fix PCI IRQ mapping on Versatile PB"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ls2080a/dts: Add little endian property for GPIO IP block
dt-bindings: define little-endian property for QorIQ GPIO
ARM64: dts: ls2080a: fix eSDHC endianness
ARM: dts: vf610: use reset values for L2 cache latencies
ARM: pxa: use PWM lookup table for all machines
ARM: dts: berlin: add 2nd clock for BG2Q sdhci0 and sdhci1
ARM: dts: berlin: correct BG2Q's sdhci2 2nd clock
ARM: dts: am4372: fix clock source for arm twd and global timers
ARM: at91: fix pinctrl driver selection
ARM: at91/dt: add always-on to 1.8V regulator
ARM: dts: vf610: fix clock definition for SAI2
ARM: imx: clk-vf610: fix SAI clock tree
ARM: ixp4xx: fix read{b,w,l} return types
irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB
ARM: OMAP2+: enable REGULATOR_FIXED_VOLTAGE
ARM: dts: add dm816x missing spi DT dma handles
ARM: dts: add dm816x missing #mbox-cells
cpufreq: s3c24xx: Do not mark s3c2410_plls_add as __init
ARM: EXYNOS: Fix potential NULL pointer access in exynos_sys_powerdown_conf
DSPI instances in Vybrid have a different amount of chip selects
and CTARs (Clock and transfer Attributes Register). In case of
DSPI1 we only have 2 CTAR registers and 4 CS. In present driver
implementation CTAR offset is derived from CS instance which will
lead to out of bound access if chip select instance is greater than
CTAR register instance, hence use single CTAR0 register for all CS
instances. Since we write the CTAR register anyway before each access,
there is no value in using the additional CTAR registers. Also one
should not program a value in CTAS for a CTAR register that is not
present, hence configure CTAS to use CTAR0.
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Acked-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Mark Brown <broonie@kernel.org>
- opal-irqchip: Fix double endian conversion from Alistair Popple
- cxl: Set endianess of kernel contexts from Frederic Barrat
- sbc8641: drop bogus PHY IRQ entries from DTS file from Paul Gortmaker
- Revert "powerpc/eeh: Don't unfreeze PHB PE after reset" from Andrew Donnellan
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Merge tag 'powerpc-4.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- opal-irqchip: Fix double endian conversion from Alistair Popple
- cxl: Set endianess of kernel contexts from Frederic Barrat
- sbc8641: drop bogus PHY IRQ entries from DTS file from Paul Gortmaker
- Revert "powerpc/eeh: Don't unfreeze PHB PE after reset" from Andrew
Donnellan
* tag 'powerpc-4.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
Revert "powerpc/eeh: Don't unfreeze PHB PE after reset"
powerpc/sbc8641: drop bogus PHY IRQ entries from DTS file
cxl: Set endianess of kernel contexts
powerpc/opal-irqchip: Fix double endian conversion
Merge misc fixes from Andrew Morton:
"17 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
MIPS: fix DMA contiguous allocation
sh64: fix __NR_fgetxattr
ocfs2: fix SGID not inherited issue
mm/oom_kill.c: avoid attempting to kill init sharing same memory
drivers/base/memory.c: prohibit offlining of memory blocks with missing sections
tmpfs: fix shmem_evict_inode() warnings on i_blocks
mm/hugetlb.c: fix resv map memory leak for placeholder entries
mm: hugetlb: call huge_pte_alloc() only if ptep is null
kernel: remove stop_machine() Kconfig dependency
mm: kmemleak: mark kmemleak_init prototype as __init
mm: fix kerneldoc on mem_cgroup_replace_page
osd fs: __r4w_get_page rely on PageUptodate for uptodate
MAINTAINERS: make Vladimir co-maintainer of the memory controller
mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't make any progress
mm: fix swapped Movable and Reclaimable in /proc/pagetypeinfo
memcg: fix memory.high target
mm: hugetlb: fix hugepage memory leak caused by wrong reserve count
Pull parisc fixes from Helge Deller:
"Fix the boot crash on Mako machines with Huge Pages, prevent a panic
with SATA controllers (and others) by correctly calculating the IOMMU
space, hook up the mlock2 syscall and drop unneeded code in the parisc
pci code"
* 'parisc-4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Disable huge pages on Mako machines
parisc: Wire up mlock2 syscall
parisc: Remove unused pcibios_init_bus()
parisc iommu: fix panic due to trying to allocate too large region
Pull block layer fixes from Jens Axboe:
"A set of fixes for the current series. This contains:
- A bunch of fixes for lightnvm, should be the last round for this
series. From Matias and Wenwei.
- A writeback detach inode fix from Ilya, also marked for stable.
- A block (though it says SCSI) fix for an OOPS in SCSI runtime power
management.
- Module init error path fixes for null_blk from Minfei"
* 'for-linus' of git://git.kernel.dk/linux-block:
null_blk: Fix error path in module initialization
lightnvm: do not compile in debugging by default
lightnvm: prevent gennvm module unload on use
lightnvm: fix media mgr registration
lightnvm: replace req queue with nvmdev for lld
lightnvm: comments on constants
lightnvm: check mm before use
lightnvm: refactor spin_unlock in gennvm_get_blk
lightnvm: put blks when luns configure failed
lightnvm: use flags in rrpc_get_blk
block: detach bdev inode from its wb in __blkdev_put()
SCSI: Fix NULL pointer dereference in runtime PM
Commit bdee237c03 ("x86: mm: Use 2GB memory block size on large-memory
x86-64 systems") and 982792c782 ("x86, mm: probe memory block size for
generic x86 64bit") introduced large block sizes for x86. This made it
possible to have multiple sections per memory block where previously,
there was a only every one section per block.
Since blocks consist of contiguous ranges of section, there can be holes
in the blocks where sections are not present. If one attempts to
offline such a block, a crash occurs since the code is not designed to
deal with this.
This patch is a quick fix to gaurd against the crash by not allowing
blocks with non-present sections to be offlined.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=107781
Signed-off-by: Seth Jennings <sjennings@variantweb.net>
Reported-by: Andrew Banman <abanman@sgi.com>
Cc: Daniel J Blueman <daniel@numascale.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Greg KH <greg@kroah.com>
Cc: Russ Anderson <rja@sgi.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
On an hardware shared I2C bus (certain Intel Baytrail SoC platforms) the
runtime PM disable depth keeps increasing over repeated modprobe/rmmod
cycle because pm_runtime_disable() is called without checking should it
be disabled already because of bus sharing.
This hasn't made any other harm than dev->power.disable_depth keeps
increasing but keep it sync by calling pm_runtime_disable() only when
runtime PM is not disabled.
Reported-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Because of some hardware limitation, AMD I2C controller can't
trigger pending interrupt if interrupt status has been changed
after clearing interrupt status bits. Then, I2C will lost
interrupt and IO timeout.
According to hardware design, this patch implements a workaround
to disable i2c controller interrupt and re-enable i2c interrupt
before exiting ISR.
To reduce the performance impacts on other vendors, use unlikely
function to check flag in ISR.
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
When using the Promise TX2+ SATA controller on PA-RISC, the system often
crashes with kernel panic, for example just writing data with the dd
utility will make it crash.
Kernel panic - not syncing: drivers/parisc/sba_iommu.c: I/O MMU @ 000000000000a000 is out of mapping resources
CPU: 0 PID: 18442 Comm: mkspadfs Not tainted 4.4.0-rc2 #2
Backtrace:
[<000000004021497c>] show_stack+0x14/0x20
[<0000000040410bf0>] dump_stack+0x88/0x100
[<000000004023978c>] panic+0x124/0x360
[<0000000040452c18>] sba_alloc_range+0x698/0x6a0
[<0000000040453150>] sba_map_sg+0x260/0x5b8
[<000000000c18dbb4>] ata_qc_issue+0x264/0x4a8 [libata]
[<000000000c19535c>] ata_scsi_translate+0xe4/0x220 [libata]
[<000000000c19a93c>] ata_scsi_queuecmd+0xbc/0x320 [libata]
[<0000000040499bbc>] scsi_dispatch_cmd+0xfc/0x130
[<000000004049da34>] scsi_request_fn+0x6e4/0x970
[<00000000403e95a8>] __blk_run_queue+0x40/0x60
[<00000000403e9d8c>] blk_run_queue+0x3c/0x68
[<000000004049a534>] scsi_run_queue+0x2a4/0x360
[<000000004049be68>] scsi_end_request+0x1a8/0x238
[<000000004049de84>] scsi_io_completion+0xfc/0x688
[<0000000040493c74>] scsi_finish_command+0x17c/0x1d0
The cause of the crash is not exhaustion of the IOMMU space, there is
plenty of free pages. The function sba_alloc_range is called with size
0x11000, thus the pages_needed variable is 0x11. The function
sba_search_bitmap is called with bits_wanted 0x11 and boundary size is
0x10 (because dma_get_seg_boundary(dev) returns 0xffff).
The function sba_search_bitmap attempts to allocate 17 pages that must not
cross 16-page boundary - it can't satisfy this requirement
(iommu_is_span_boundary always returns true) and fails even if there are
many free entries in the IOMMU space.
How did it happen that we try to allocate 17 pages that don't cross
16-page boundary? The cause is in the function iommu_coalesce_chunks. This
function tries to coalesce adjacent entries in the scatterlist. The
function does several checks if it may coalesce one entry with the next,
one of those checks is this:
if (startsg->length + dma_len > max_seg_size)
break;
When it finishes coalescing adjacent entries, it allocates the mapping:
sg_dma_len(contig_sg) = dma_len;
dma_len = ALIGN(dma_len + dma_offset, IOVP_SIZE);
sg_dma_address(contig_sg) =
PIDE_FLAG
| (iommu_alloc_range(ioc, dev, dma_len) << IOVP_SHIFT)
| dma_offset;
It is possible that (startsg->length + dma_len > max_seg_size) is false
(we are just near the 0x10000 max_seg_size boundary), so the funcion
decides to coalesce this entry with the next entry. When the coalescing
succeeds, the function performs
dma_len = ALIGN(dma_len + dma_offset, IOVP_SIZE);
And now, because of non-zero dma_offset, dma_len is greater than 0x10000.
iommu_alloc_range (a pointer to sba_alloc_range) is called and it attempts
to allocate 17 pages for a device that must not cross 16-page boundary.
To fix the bug, we must make sure that dma_len after addition of
dma_offset and alignment doesn't cross the segment boundary. I.e. change
if (startsg->length + dma_len > max_seg_size)
break;
to
if (ALIGN(dma_len + dma_offset + startsg->length, IOVP_SIZE) > max_seg_size)
break;
This patch makes this change (it precalculates max_seg_boundary at the
beginning of the function iommu_coalesce_chunks). I also added a check
that the mapping length doesn't exceed dma_get_seg_boundary(dev) (it is
not needed for Promise TX2+ SATA, but it may be needed for other devices
that have dma_get_seg_boundary lower than dma_get_max_seg_size).
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
Without this, filter insertion on a VF would fail if only one channel
was in use. This would include the unicast station filter and therefore
no traffic would be received.
Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
