Commit graph

982,081 commits

Author SHA1 Message Date
Hans de Goede
548193cba2 test_firmware: add support for firmware_request_platform
Add support for testing firmware_request_platform through a new
trigger_request_platform trigger.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20200115163554.101315-6-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-20 14:54:04 +01:00
Hans de Goede
e4c2c0ff00 firmware: Add new platform fallback mechanism and firmware_request_platform()
In some cases the platform's main firmware (e.g. the UEFI fw) may contain
an embedded copy of device firmware which needs to be (re)loaded into the
peripheral. Normally such firmware would be part of linux-firmware, but in
some cases this is not feasible, for 2 reasons:

1) The firmware is customized for a specific use-case of the chipset / use
with a specific hardware model, so we cannot have a single firmware file
for the chipset. E.g. touchscreen controller firmwares are compiled
specifically for the hardware model they are used with, as they are
calibrated for a specific model digitizer.

2) Despite repeated attempts we have failed to get permission to
redistribute the firmware. This is especially a problem with customized
firmwares, these get created by the chip vendor for a specific ODM and the
copyright may partially belong with the ODM, so the chip vendor cannot
give a blanket permission to distribute these.

This commit adds a new platform fallback mechanism to the firmware loader
which will try to lookup a device fw copy embedded in the platform's main
firmware if direct filesystem lookup fails.

Drivers which need such embedded fw copies can enable this fallback
mechanism by using the new firmware_request_platform() function.

Note that for now this is only supported on EFI platforms and even on
these platforms firmware_fallback_platform() only works if
CONFIG_EFI_EMBEDDED_FIRMWARE is enabled (this gets selected by drivers
which need this), in all other cases firmware_fallback_platform() simply
always returns -ENOENT.

Reported-by: Dave Olsthoorn <dave@bewaar.me>
Suggested-by: Peter Jones <pjones@redhat.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200115163554.101315-5-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-20 14:54:04 +01:00
Greg Kroah-Hartman
4445eb6d94 Stable shared branch between EFI and driver tree
Stable shared branch to ease the integration of Hans's series to support
 device firmware loaded from EFI boot service memory regions.
 
 [PATCH v12 00/10] efi/firmware/platform-x86: Add EFI embedded fw support
 https://lore.kernel.org/linux-efi/20200115163554.101315-1-hdegoede@redhat.com/
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCgAdFiEEnNKg2mrY9zMBdeK7wjcgfpV0+n0FAl5eJNoACgkQwjcgfpV0
 +n16Fwf/fXCS+xefhIeXZuUQsQexDsofHYrWlt9oS74KF6iqxVDdfSRZHZvAT/Hr
 r1pYpMFSKhRy/u8hhTz1RxwoJXiwQg+yPKwLAMvt+xx2BaNJzLFPvWX8euHYDubM
 mWfrjStgandAcNzBDBIYYdG/fSYjlzq/xWF+rlYnnhMNa6lcYhecwgxmt0iYtMnB
 S31473zE7DZE0PyV9vEEMyaEbQJYprKrIGoaVpbQ80Y2f2MDNaft+7/EGXx5Hxex
 pHZrBdkCL1v7ej7pg8bcxqid682fle5tnogzxf5jo0xMMSXnT5xVPg4OL3rY7kwD
 Ba4cLaJD4Q1fFZ1GwPfa59PrDnUIfA==
 =sj1e
 -----END PGP SIGNATURE-----

Merge tag 'stable-shared-branch-for-driver-tree' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into driver-core-next

Ard writes:

Stable shared branch between EFI and driver tree

Stable shared branch to ease the integration of Hans's series to support
device firmware loaded from EFI boot service memory regions.

[PATCH v12 00/10] efi/firmware/platform-x86: Add EFI embedded fw support
https://lore.kernel.org/linux-efi/20200115163554.101315-1-hdegoede@redhat.com/

* tag 'stable-shared-branch-for-driver-tree' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi: Add embedded peripheral firmware support
  efi: Export boot-services code and data as debugfs-blobs
2020-03-20 14:50:48 +01:00
Yan-Hsuan Chuang
8fa180bb4a mac80211: driver can remain on channel if not using chan_ctx
Some of the drivers are not using channel context, but let the
stack to control/switch channels instead. For such cases, driver
can still remain on channel because the mac80211 stack actually
supports it.

The stack will check if the driver is using chan_ctx and has
ops->remain_on_channel been hooked. Otherwise it will start its
ROC work to remain on channel. So, even if the driver is not
using chan_ctx, the driver is still capable of doing remain on
channel.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Link: https://lore.kernel.org/r/20200312074337.16198-1-yhchuang@realtek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:21 +01:00
Johannes Berg
306b79ea6e nl80211: clarify code in nl80211_del_station()
The long if chain of interface types is hard to read,
especially now with the additional condition after it.
Use a switch statement to clarify this code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20200320113834.2c51b9e8e341.I3fa5dc3f7d3cb1dbbd77191d764586f7da993f3f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:20 +01:00
Veerendranath Jakkam
7fc82af856 cfg80211: Configure PMK lifetime and reauth threshold for PMKSA entries
Drivers that trigger roaming need to know the lifetime of the configured
PMKSA for deciding whether to trigger the full or PMKSA cache based
authentication. The configured PMKSA is invalid after the PMK lifetime
has expired and must not be used after that and the STA needs to
disassociate if the PMK expires. Hence the STA is expected to refresh
the PMK with a full authentication before this happens (e.g., when
reassociating to a new BSS the next time or by performing EAPOL
reauthentication depending on the AKM) to avoid unnecessary
disconnection.

The PMK reauthentication threshold is the percentage of the PMK lifetime
value and indicates to the driver to trigger a full authentication roam
(without PMKSA caching) after the reauthentication threshold time, but
before the PMK timer has expired. Authentication methods like SAE need
to be able to generate a new PMKSA entry without having to force a
disconnection after this threshold timeout. If no roaming occurs between
the reauthentication threshold time and PMK lifetime expiration,
disassociation is still forced.

The new attributes for providing these values correspond to the dot11
MIB variables dot11RSNAConfigPMKLifetime and
dot11RSNAConfigPMKReauthThreshold.

This type of functionality is already available in cases where user
space component is in control of roaming. This commit extends that same
capability into cases where parts or all of this functionality is
offloaded to the driver.

Signed-off-by: Veerendranath Jakkam <vjakkam@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200312235903.18462-1-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:20 +01:00
Seevalamuthu Mariappan
b255b72bc0 mac80211: Read rx_stats with perCPU pointers
Use perCPU pointers to get rx_stats in sta_set_sinfo
when RSS is enabled

Signed-off-by: Seevalamuthu Mariappan <seevalam@codeaurora.org>
Link: https://lore.kernel.org/r/1584526555-25960-1-git-send-email-seevalam@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:20 +01:00
Taehee Yoo
dd063ffae0 virt_wifi: implement ndo_get_iflink
->ndo_get_iflink() is useful for finding lower interface.

Test commands:
    ip link add dummy0 type dummy
    ip link add vw1 link dummy0 type virt_wifi
    ip link show vw1

Before:
    9: vw1: <BROADCAST,MULTICAST> ...
After:
    9: vw1@dummy0: <BROADCAST,MULTICAST> ...

Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Link: https://lore.kernel.org/r/20200305090636.28221-1-ap420073@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:20 +01:00
Nicolas Cavallari
a916062a09 mac80211: Allow deleting stations in ibss mode to reset their state
Set the NL80211_EXT_FEATURE_DEL_IBSS_STA if the interface support IBSS
mode, so that stations can be reset from user space.

mac80211 already deletes stations by itself, so mac80211 drivers must
already support this.

This has been successfully tested with ath9k.

Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Link: https://lore.kernel.org/r/20200305135754.12094-2-cavallar@lri.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:20 +01:00
Nicolas Cavallari
edafcf4259 cfg80211: Add support for userspace to reset stations in IBSS mode
Sometimes, userspace is able to detect that a peer silently lost its
state (like, if the peer reboots). wpa_supplicant does this for IBSS-RSN
by registering for auth/deauth frames, but when it detects this, it is
only able to remove the encryption keys of the peer and close its port.

However, the kernel also hold other state about the station, such as BA
sessions, probe response parameters and the like.  They also need to be
resetted correctly.

This patch adds the NL80211_EXT_FEATURE_DEL_IBSS_STA feature flag
indicating the driver accepts deleting stations in IBSS mode, which
should send a deauth and reset the state of the station, just like in
mesh point mode.

Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Link: https://lore.kernel.org/r/20200305135754.12094-1-cavallar@lri.fr
[preserve -EINVAL return]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:20 +01:00
Johannes Berg
660d81dae8 mac80211: consider WLAN_EID_EXT_HE_OPERATION for parsing CRC
We use the parsing CRC for checking if the beacon changed, and
if the WLAN_EID_EXT_HE_OPERATION extended element changes we
need to track it so we can react to that. Include it in the CRC
calculation.

Link: https://lore.kernel.org/r/20200131111300.891737-22-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:20 +01:00
Shaul Triebitz
0c138a5c2b nl80211: add PROTECTED_TWT nl80211 extended feature
Add API for telling whether the driver supports protected TWT.
The protected_twt capability in the RSNXE will be based on this.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/20200131111300.891737-23-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:20 +01:00
Shaul Triebitz
03efb863bb mac80211: HE: set missing bss_conf fields in AP mode
In AP mode, set htc_trig_based_pkt_ext and frame_time_rts_th
for driver use.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/20200131111300.891737-19-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:19 +01:00
Shaul Triebitz
7e8d6f12bb nl80211: pass HE operation element to the driver
Pass the AP's HE operation element to the driver.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/20200131111300.891737-18-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:19 +01:00
Avraham Stern
efb5520d0e nl80211/cfg80211: add support for non EDCA based ranging measurement
Add support for requesting that the ranging measurement will use
the trigger-based / non trigger-based flow instead of the EDCA based
flow.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/20200131111300.891737-2-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:19 +01:00
Johannes Berg
95247705c4 mac80211: don't leave skb->next/prev pointing to stack
In beacon protection, don't leave skb->next/prev pointing to the
on-stack list, even if that's actually harmless since we don't use
them again afterwards.

While at it, check that the SKB on the list is still the same, as
that's required here. If not, the encryption (protection) code is
buggy.

Fixes: 0a3a84360b ("mac80211: Beacon protection using the new BIGTK (AP)")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20200320102021.1be7823fc05e.Ia89fb79a0469d32137c9a04315a1d2dfc7b7d6f5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:19 +01:00
Qiujun Huang
07e9733886 mac80211: update documentation about tx power
The structure member added at some point, but the kernel-doc was not
updated.

Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Link: https://lore.kernel.org/r/20200312144424.3023-1-hqjagain@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:19 +01:00
Markus Theil
7f3f96cedd mac80211: handle no-preauth flag for control port
This patch adds support for disabling pre-auth rx over the nl80211 control
port for mac80211.

Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Link: https://lore.kernel.org/r/20200312091055.54257-3-markus.theil@tu-ilmenau.de
[fix indentation slightly, squash feature enablement]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:19 +01:00
Markus Theil
5631d96aa3 nl80211: add no pre-auth attribute and ext. feature flag for ctrl. port
If the nl80211 control port is used before this patch, pre-auth frames
(0x88c7) are send to userspace uncoditionally. While this enables userspace
to only use nl80211 on the station side, it is not always useful for APs.
Furthermore, pre-auth frames are ordinary data frames and not related to
the control port. Therefore it should for example be possible for pre-auth
frames to be bridged onto a wired network on AP side without touching
userspace.

For backwards compatibility to code already using pre-auth over nl80211,
this patch adds a feature flag to disable this behavior, while it remains
enabled by default. An additional ext. feature flag is added to detect this
from userspace.

Thanks to Jouni for pointing out, that pre-auth frames should be handled as
ordinary data frames.

Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Link: https://lore.kernel.org/r/20200312091055.54257-2-markus.theil@tu-ilmenau.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:19 +01:00
Erel Geron
5d44fe7c98 mac80211_hwsim: add frame transmission support over virtio
This allows communication with external entities.

It also required fixing up the netlink policy, since NLA_UNSPEC
attributes are no longer accepted.

Signed-off-by: Erel Geron <erelx.geron@intel.com>
[port to backports, inline the ID, use 29 as the ID as requested,
 drop != NULL checks, reduce ifdefs]
Link: https://lore.kernel.org/r/20200305143212.c6e4c87d225b.I7ce60bf143e863dcdf0fb8040aab7168ba549b99@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:19 +01:00
Johannes Berg
1f7e9f46c2 cfg80211: fix documentation format
Kernel-doc complains if the line isn't prefixed with an
asterisk, fix that.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20200320144110.2786ad5fb234.I369d103d11c71e39e3a3f97ed68a528c5b875f1e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20 14:42:12 +01:00
Gayatri Kammela
c61b693c9a platform/x86: intel_pmc_core: Make pmc_core_substate_res_show() generic
Currently pmc_core_substate_res_show() uses array of char pointers
i.e., lpm_modes for Tiger Lake directly to iterate through and to get
the number of low power modes which is hardcoded and cannot be re-used
for future platforms that support sub-states. To maintain readability,
make pmc_core_substate_res_show() generic, so that it can re-used for
future platforms.

Cc: Chen Zhou <chenzhou10@huawei.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: David E. Box <david.e.box@intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 15:39:49 +02:00
Tomi Valkeinen
4f55bb0380 omapfb: Remove unused writeback code
Remove unused writeback code. This code will never be used, as omapfb is
being deprecated.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200313122410.7528-1-tomi.valkeinen@ti.com
2020-03-20 14:29:13 +01:00
Randy Dunlap
6ce2fc42db fbdev: via: fix -Wextra build warning and format warning
When 'VIAFB_DEBUG' and 'VIAFB_WARN' are not defined, modify the
DEBUG_MSG() &WARN_MSG() macros to use the no_printk() macro instead of
using <empty>.
This fixes a build warning when -Wextra is used and provides
printk format checking:

../drivers/video/fbdev/via/ioctl.c:88:47: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]

Also use %lu to print an unsigned long instead of just %l, to fix
a printk format warning:

../drivers/video/fbdev/via/viafbdev.c: In function ‘viafb_dvp0_proc_write’:
../drivers/video/fbdev/via/viafbdev.c:1148:14: warning: unknown conversion type character ‘]’ in format [-Wformat=]
    DEBUG_MSG("DVP0:reg_val[%l]=:%x\n", i,

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-7-rdunlap@infradead.org
2020-03-20 14:29:12 +01:00
Randy Dunlap
1a56b9fa32 fbdev: pm[23]fb.c: fix -Wextra build warnings and errors
When 'DEBUG' is not defined, modify the DPRINTK() macro to use the
no_printk() macro instead of using <empty>.
This fixes build warnings when -Wextra is used and provides
printk format checking:

../drivers/video/fbdev/pm2fb.c:227:38: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
../drivers/video/fbdev/pm3fb.c:1039:33: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]

Also drop one argument in two DPRINTK() macro uses to provide the
correct number of arguments and use the correct field in one case
to fix a build error:

../drivers/video/fbdev/pm3fb.c:353:9: error: ‘struct fb_info’ has no member named ‘current_par’
     info->current_par->depth);

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-6-rdunlap@infradead.org
2020-03-20 14:29:11 +01:00
Randy Dunlap
5194480ce6 fbdev: savage: fix -Wextra build warning
When 'SAVAGEFB_DEBUG' is not defined, modify the DBG() macro to use the
no_printk() macro instead of using <empty>.
This fixes a build warning when -Wextra is used and provides
printk format checking:

../drivers/video/fbdev/savage/savagefb_driver.c:2411:13: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-5-rdunlap@infradead.org
2020-03-20 14:29:10 +01:00
Randy Dunlap
6ea16a0ba3 fbdev: matrox: fix -Wextra build warnings
When 'DEBUG' is not defined, modify the dprintk() macro to use the
no_printk() macro instead of using <empty>.
This fixes build warnings when -Wextra is used and provides
printk format checking:

../drivers/video/fbdev/matrox/matroxfb_base.c:635:77: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
../drivers/video/fbdev/matrox/matroxfb_Ti3026.c:632:54: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]
../drivers/video/fbdev/matrox/matroxfb_Ti3026.c:654:53: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-4-rdunlap@infradead.org
2020-03-20 14:29:09 +01:00
Randy Dunlap
c43da06107 fbdev: aty: fix -Wextra build warning
When 'DEBUG' is not defined, modify the DPRINTK() macro to use the
no_printk() macro instead of using <empty>.
This fixes a build warning when -Wextra is used and provides
printk format checking:

../drivers/video/fbdev/aty/atyfb_base.c:784:61: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-3-rdunlap@infradead.org
2020-03-20 14:29:08 +01:00
Randy Dunlap
b5445b2441 fbdev: fbmon: fix -Wextra build warnings
When 'DEBUG' is not defined, modify the DPRINTK() macro to use the
no_printk() macro instead of using <empty>.
This fixes a build warning when -Wextra is used and provides
printk format checking:

../drivers/video/fbdev/core/fbmon.c:812:47: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
../drivers/video/fbdev/core/fbmon.c:842:24: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]
../drivers/video/fbdev/core/fbmon.c:847:24: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200315041002.24473-2-rdunlap@infradead.org
2020-03-20 14:29:07 +01:00
Takashi Iwai
06b522d6de video: uvesafb: Use scnprintf() for avoiding potential buffer overflow
Since snprintf() returns the would-be-output size instead of the
actual output size, the succeeding calls may go beyond the given
buffer limit.  Fix it by replacing with scnprintf().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200311093230.24900-4-tiwai@suse.de
2020-03-20 14:29:06 +01:00
Takashi Iwai
42f21e5452 video: omap2: Use scnprintf() for avoiding potential buffer overflow
Since snprintf() returns the would-be-output size instead of the
actual output size, the succeeding calls may go beyond the given
buffer limit.  Fix it by replacing with scnprintf().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200311093230.24900-3-tiwai@suse.de
2020-03-20 14:29:05 +01:00
Takashi Iwai
bf1b615ad9 video: omapfb: Use scnprintf() for avoiding potential buffer overflow
Since snprintf() returns the would-be-output size instead of the
actual output size, the succeeding calls may go beyond the given
buffer limit.  Fix it by replacing with scnprintf().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200311093230.24900-2-tiwai@suse.de
2020-03-20 14:29:04 +01:00
Chris Wilson
b412c63f1c drm/i915/gt: Report context-is-closed prior to pinning
Our assertion caught that we do try to pin a closed context if userspace
is viciously racing context-closure with execbuf, so make it fail
gracefully.

Closes: https://gitlab.freedesktop.org/drm/intel/issues/1492
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200320130159.3922-1-chris@chris-wilson.co.uk
2020-03-20 13:27:28 +00:00
Ville Syrjälä
cb1824bb1e drm/i915: Fix crtc nv12 etc. plane bitmasks for DPMS off
We only consider crtc_state->enable when initially calculating plane
visibility. Later on we try to override the plane's state to invisible
if the crtc is in DPMS off state (crtc_state->active==false).
Unfortunately the code doing that only updates the plane_state.visible
flag and the crtc_state.active_planes bimask, but forgets to update
some of the other plane bitmasks stored in the crtc_state. Namely
crtc_state.nv12_planes is left set up based on the original visibility
check which makes icl_check_nv12_planes() pick a slave plane for the
flagged plane in the bitmask. Later on we hit the watermark code
which sees a plane with a slave assigned and it then makes the
logical assumption that the master plane must itself be visible.
Since the master's plane_state.visible flag was already cleared
we get a WARN.

Fix the problem by clearing all the plane bitmasks for DPMS off.
This is more or less the wrong approach and instead we should
calculate all the plane related state purely based crtc_state->enable
(to guarantee that the subsequent DPMS on can't fail). However in
the past we definitely had some roadblocks to making that happen.
Not sure how many are left these days, but let's stick to the current
approach since it's a much simpler fix to the immediate problem
(the WARN).

v2: Keep the visible=false, it's important (Rodrigo)

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200318174515.31637-1-ville.syrjala@linux.intel.com
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-03-20 15:12:11 +02:00
Tudor Ambarus
c528ecfbef
spi: atmel-quadspi: Add verbose debug facilities to monitor register accesses
This feature should not be enabled in release but can be useful for
developers who need to monitor register accesses at some specific places.

Helped me identify a bug in u-boot, by comparing the register accesses
from the linux driver with the ones from its u-boot variant.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20200320065058.891221-1-tudor.ambarus@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-20 13:03:38 +00:00
Gayatri Kammela
267fc714ca platform/x86: intel_pmc_core: Make pmc_core_lpm_display() generic for platforms that support sub-states
Currently pmc_core_lpm_display() uses an array of the struct pointers,
i.e.  tgl_lpm_maps for Tiger Lake directly to iterate through and to get
the number of (live) status registers which is hard coded and can not
be re-used for the future platforms that support sub-states. To maintain
readability, make pmc_core_lpm_display() generic, so that it can be re-used
for future platforms.

Cc: Chen Zhou <chenzhou10@huawei.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: David E. Box <david.e.box@intel.com>
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:47:01 +02:00
Masanari Iida
9945a24798 tools/power/x86/intel-speed-select: Fix a typo in error message
This patch fix a spelling typo in error message.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:27 +02:00
Srinivas Pandruvada
1e46d1d59a tools/power/x86/intel-speed-select: Update version
Fair number of changes including bug fixes done to change version.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:23 +02:00
Srinivas Pandruvada
74062363f8 tools/power/x86/intel-speed-select: Avoid duplicate Package strings for json
For platforms where multiple packages/die, this makes "Package-" key
duplicate. To make unique, add die and cpu id to key name.

So "Package-0" key name will change to "Package-0-die-x:cpu-x".

For example:
$sudo ./intel-speed-select -f json  perf-profile info
Intel(R) Speed Select Technology
Executing on CPU model:106[0x6a]
{
  "package-0:die-0:cpu-0": {
    "perf-profile-level-0": {
      "cpu-count": "32",
      "enable-cpu-count": "32",
...
...
 "package-1:die-0:cpu-16": {

    "perf-profile-level-0": {
      "cpu-count": "32",
      "enable-cpu-count": "32",
      "enable-cpu-mask": "ffff0000,ffff0000",
...
...

For non json format, there is no change. Here when print_package_info()
is called, it will return the level to print for other information.
This level is used formatting. Also in some function duplicate code
was there to print package,die and CPU information. Replace all that
code with a call to print_package_info().

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:23 +02:00
Srinivas Pandruvada
e44d76569b tools/power/x86/intel-speed-select: Add display for enabled cpus count
In addition to total CPU count also display "enabled-cpu-count" for
perf-profile info command. This will show number of CPUs in the
"enable-cpu-mask".

For example:

 perf-profile-level-4
        cpu-count:32
        enable-cpu-count:16
        enable-cpu-mask:e42d0000,e42d0000

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:23 +02:00
Srinivas Pandruvada
4a9603534a tools/power/x86/intel-speed-select: Print friendly warning for bad command line
When user specifies invalid option, display "Unknown Option: ignore",
instead of "no match". Also display error for garbage on the command
line.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:23 +02:00
Srinivas Pandruvada
b86639e195 tools/power/x86/intel-speed-select: Fix avx options for turbo-freq feature
Specifying "avx2" and "avx512" option for display filter doesn't work
with short option "-r", only works with --try-type. Also compare full
6 characters for "avx512" string.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:22 +02:00
Srinivas Pandruvada
7fc9fefd99 tools/power/x86/intel-speed-select: Improve CLX commands
CLX doesn't have capability to change the feature in the hardware, but
this acts as "--auto | -a" option. So even if user didn't specify the
option, use this as --auto | -a to set cpufreq scaling frequency limits.

Also remove perror with debug_printf as they don't bring any value.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:22 +02:00
Srinivas Pandruvada
070fdea13d tools/power/x86/intel-speed-select: Show error for invalid CPUs in the options
When --cpu or -c is used to specify target CPUs and non of them are valid,
display error.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:22 +02:00
Srinivas Pandruvada
fe6fb2165a tools/power/x86/intel-speed-select: Improve core-power result and error display
This change adds improved error display and handling for commands related
to core-power feature. The changes include:
- Replace perror with helpful error message
- Use ordered priority for SKX based platform by default as the
proportional priority is not supported
- Don't show weight and epp in help and also give error when user
tries to set them in SKX based platforms
- Range check for epp and weights and display error

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:22 +02:00
Srinivas Pandruvada
95f8e56945 tools/power/x86/intel-speed-select: Kernel interface error handling
Treat a case when mailbox/mmio command can't be handled by the kernel
drivers when the module is removed or send a command which no driver can
handle. In this case ENOTTY result is returned, so print error.

Also when the isst_if_mmio module is removed, we can't send CLOS message
messages via Mailbox on non SKX based platforms. When this module is
removed,  isst_platform_info.mmio_supported is set to 0. So it can't be
used as a condition to send via mailbox. Here replace check for Skylake
based platform to send via mailbox, other platforms can't use mailbox in
lieu of MMIO.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:22 +02:00
Srinivas Pandruvada
a9fd6ae739 tools/power/x86/intel-speed-select: Improve error display for turbo-freq feature
This change adds improved error display and handling for commands related
to turbo-freq feature. The changes include:
- Replace perror/fprintf with helpful error message
- Error for not specifying TDP level when required
- Show error for invalid bucket number
- Show message to enable core-power before enabling turbo-freq feature

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:22 +02:00
Srinivas Pandruvada
39bae0fce4 tools/power/x86/intel-speed-select: Improve error display for base-freq feature
This change adds improved error display and handling for commands related
to base-freq feature. The changes include:
- Replace perror/fprintf with helpful error message
- Error for not specifying TDP level when required
- For CLX show help which shows limitation

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:21 +02:00
Srinivas Pandruvada
3d1a857981 tools/power/x86/intel-speed-select: Improve output of perf-profile commands
Improve output of perf-profile commands:
get-config-enabled
get-lock-status

Instead of showing 0/1, show meaningful strings. Also show error when
command is failed.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:21 +02:00
Srinivas Pandruvada
68e2f10971 tools/power/x86/intel-speed-select: Enhance help for core-power assoc
Enhance help to specify CPU and clos by an example.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-03-20 14:46:21 +02:00