Commit Graph

917134 Commits

Author SHA1 Message Date
James Hilliard
7706b0a76a component: Silence bind error on -EPROBE_DEFER
If a component fails to bind due to -EPROBE_DEFER we should not log an
error as this is not a real failure.

Fixes messages like:
vc4-drm soc:gpu: failed to bind 3f902000.hdmi (ops vc4_hdmi_ops): -517
vc4-drm soc:gpu: master bind failed: -517

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Link: https://lore.kernel.org/r/20200411190241.89404-1-james.hilliard1@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 17:54:15 +02:00
Saravana Kannan
00b2475578 driver core: Fix handling of fw_devlink=permissive
When commit 8375e74f2b ("driver core: Add fw_devlink kernel
commandline option") added fw_devlink, it didn't implement "permissive"
mode correctly.

That commit got the device links flags correct to make sure unprobed
suppliers don't block the probing of a consumer. However, if a consumer
is waiting for mandatory suppliers to register, that could still block a
consumer from probing.

This commit fixes that by making sure in permissive mode, all suppliers
to a consumer are treated as a optional suppliers. So, even if a
consumer is waiting for suppliers to register and link itself (using the
DL_FLAG_SYNC_STATE_ONLY flag) to the supplier, the consumer is never
blocked from probing.

Fixes: 8375e74f2b ("driver core: Add fw_devlink kernel commandline option")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200331022832.209618-1-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 17:54:13 +02:00
Luis Chamberlain
3740d93e37 coredump: fix crash when umh is disabled
Commit 64e90a8acb ("Introduce STATIC_USERMODEHELPER to mediate
call_usermodehelper()") added the optiont to disable all
call_usermodehelper() calls by setting STATIC_USERMODEHELPER_PATH to
an empty string. When this is done, and crashdump is triggered, it
will crash on null pointer dereference, since we make assumptions
over what call_usermodehelper_exec() did.

This has been reported by Sergey when one triggers a a coredump
with the following configuration:

```
CONFIG_STATIC_USERMODEHELPER=y
CONFIG_STATIC_USERMODEHELPER_PATH=""
kernel.core_pattern = |/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e
```

The way disabling the umh was designed was that call_usermodehelper_exec()
would just return early, without an error. But coredump assumes
certain variables are set up for us when this happens, and calls
ile_start_write(cprm.file) with a NULL file.

[    2.819676] BUG: kernel NULL pointer dereference, address: 0000000000000020
[    2.819859] #PF: supervisor read access in kernel mode
[    2.820035] #PF: error_code(0x0000) - not-present page
[    2.820188] PGD 0 P4D 0
[    2.820305] Oops: 0000 [#1] SMP PTI
[    2.820436] CPU: 2 PID: 89 Comm: a Not tainted 5.7.0-rc1+ #7
[    2.820680] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190711_202441-buildvm-armv7-10.arm.fedoraproject.org-2.fc31 04/01/2014
[    2.821150] RIP: 0010:do_coredump+0xd80/0x1060
[    2.821385] Code: e8 95 11 ed ff 48 c7 c6 cc a7 b4 81 48 8d bd 28 ff
ff ff 89 c2 e8 70 f1 ff ff 41 89 c2 85 c0 0f 84 72 f7 ff ff e9 b4 fe ff
ff <48> 8b 57 20 0f b7 02 66 25 00 f0 66 3d 00 8
0 0f 84 9c 01 00 00 44
[    2.822014] RSP: 0000:ffffc9000029bcb8 EFLAGS: 00010246
[    2.822339] RAX: 0000000000000000 RBX: ffff88803f860000 RCX: 000000000000000a
[    2.822746] RDX: 0000000000000009 RSI: 0000000000000282 RDI: 0000000000000000
[    2.823141] RBP: ffffc9000029bde8 R08: 0000000000000000 R09: ffffc9000029bc00
[    2.823508] R10: 0000000000000001 R11: ffff88803dec90be R12: ffffffff81c39da0
[    2.823902] R13: ffff88803de84400 R14: 0000000000000000 R15: 0000000000000000
[    2.824285] FS:  00007fee08183540(0000) GS:ffff88803e480000(0000) knlGS:0000000000000000
[    2.824767] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.825111] CR2: 0000000000000020 CR3: 000000003f856005 CR4: 0000000000060ea0
[    2.825479] Call Trace:
[    2.825790]  get_signal+0x11e/0x720
[    2.826087]  do_signal+0x1d/0x670
[    2.826361]  ? force_sig_info_to_task+0xc1/0xf0
[    2.826691]  ? force_sig_fault+0x3c/0x40
[    2.826996]  ? do_trap+0xc9/0x100
[    2.827179]  exit_to_usermode_loop+0x49/0x90
[    2.827359]  prepare_exit_to_usermode+0x77/0xb0
[    2.827559]  ? invalid_op+0xa/0x30
[    2.827747]  ret_from_intr+0x20/0x20
[    2.827921] RIP: 0033:0x55e2c76d2129
[    2.828107] Code: 2d ff ff ff e8 68 ff ff ff 5d c6 05 18 2f 00 00 01
c3 0f 1f 80 00 00 00 00 c3 0f 1f 80 00 00 00 00 e9 7b ff ff ff 55 48 89
e5 <0f> 0b b8 00 00 00 00 5d c3 66 2e 0f 1f 84 0
0 00 00 00 00 0f 1f 40
[    2.828603] RSP: 002b:00007fffeba5e080 EFLAGS: 00010246
[    2.828801] RAX: 000055e2c76d2125 RBX: 0000000000000000 RCX: 00007fee0817c718
[    2.829034] RDX: 00007fffeba5e188 RSI: 00007fffeba5e178 RDI: 0000000000000001
[    2.829257] RBP: 00007fffeba5e080 R08: 0000000000000000 R09: 00007fee08193c00
[    2.829482] R10: 0000000000000009 R11: 0000000000000000 R12: 000055e2c76d2040
[    2.829727] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[    2.829964] CR2: 0000000000000020
[    2.830149] ---[ end trace ceed83d8c68a1bf1 ]---
```

Cc: <stable@vger.kernel.org> # v4.11+
Fixes: 64e90a8acb ("Introduce STATIC_USERMODEHELPER to mediate call_usermodehelper()")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=199795
Reported-by: Tony Vroon <chainsaw@gentoo.org>
Reported-by: Sergey Kvachonok <ravenexp@gmail.com>
Tested-by: Sergei Trofimovich <slyfox@gentoo.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20200416162859.26518-1-mcgrof@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 17:54:13 +02:00
Ulf Hansson
f458488425 amba: Initialize dma_parms for amba devices
It's currently the amba driver's responsibility to initialize the pointer,
dma_parms, for its corresponding struct device. The benefit with this
approach allows us to avoid the initialization and to not waste memory for
the struct device_dma_parameters, as this can be decided on a case by case
basis.

However, it has turned out that this approach is not very practical. Not
only does it lead to open coding, but also to real errors. In principle
callers of dma_set_max_seg_size() doesn't check the error code, but just
assumes it succeeds.

For these reasons, let's do the initialization from the common amba bus at
the device registration point. This also follows the way the PCI devices
are being managed, see pci_device_add().

Suggested-by: Christoph Hellwig <hch@lst.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: <stable@vger.kernel.org>
Tested-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20200422101013.31267-1-ulf.hansson@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 17:44:34 +02:00
Ulf Hansson
9495b7e92f driver core: platform: Initialize dma_parms for platform devices
It's currently the platform driver's responsibility to initialize the
pointer, dma_parms, for its corresponding struct device. The benefit with
this approach allows us to avoid the initialization and to not waste memory
for the struct device_dma_parameters, as this can be decided on a case by
case basis.

However, it has turned out that this approach is not very practical.  Not
only does it lead to open coding, but also to real errors. In principle
callers of dma_set_max_seg_size() doesn't check the error code, but just
assumes it succeeds.

For these reasons, let's do the initialization from the common platform bus
at the device registration point. This also follows the way the PCI devices
are being managed, see pci_device_add().

Suggested-by: Christoph Hellwig <hch@lst.de>
Cc: <stable@vger.kernel.org>
Tested-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20200422100954.31211-1-ulf.hansson@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 17:44:33 +02:00
Kai Vehmanen
ca76282b6f ALSA: hda/hdmi: fix race in monitor detection during probe
A race exists between build_pcms() and build_controls() phases of codec
setup. Build_pcms() sets up notifier for jack events. If a monitor event
is received before build_controls() is run, the initial jack state is
lost and never reported via mixer controls.

The problem can be hit at least with SOF as the controller driver. SOF
calls snd_hda_codec_build_controls() in its workqueue-based probe and
this can be delayed enough to hit the race condition.

Fix the issue by invalidating the per-pin ELD information when
build_controls() is called. The existing call to hdmi_present_sense()
will update the ELD contents. This ensures initial monitor state is
correctly reflected via mixer controls.

BugLink: https://github.com/thesofproject/linux/issues/1687
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200428123836.24512-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-04-28 16:04:45 +02:00
Christian Gromm
5e56bc06e1 most: core: use function subsys_initcall()
This patch replaces function module_init() with subsys_initcall().
It is needed to ensure that the core module of the driver is
initialized before a component tries to register with the core. This
leads to a NULL pointer dereference if the driver is configured as
in-tree.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/1587741394-22021-1-git-send-email-christian.gromm@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 15:04:09 +02:00
Dan Carpenter
522587e7c0 bus: mhi: core: Fix a NULL vs IS_ERR check in mhi_create_devices()
The mhi_alloc_device() function never returns NULL, it returns error
pointers.

Fixes: da1c4f8569 ("bus: mhi: core: Add support for creating and destroying MHI devices")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200407093133.GM68494@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 15:04:09 +02:00
Samuel Thibault
d97a9d7aea staging/speakup: Add inflection synth parameter
The inflection parameter, i.e. the pitch range, allows to change the
expressiveness of the synthesized voice.  This is supported by the DEC
talk synths, and software synthesizers such as espeak/espeak-ng.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Link: https://lore.kernel.org/r/20200425193226.nv3zfd4k3xavi353@function
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:30:10 +02:00
Jason Yan
de24e9b33a staging: rtl8723bs: core: remove set but not used 'pframe'
Fix the following gcc warning:

drivers/staging/rtl8723bs/core/rtw_mlme.c:2920:6: warning: variable
‘pframe’ set but not used [-Wunused-but-set-variable]
  u8 *pframe;
      ^~~~~~

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200427032342.27211-8-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:29:42 +02:00
Jason Yan
42577f0800 staging: rtl8723bs: core: remove set but not used 'pwrpriv'
Fix the following gcc warning:

drivers/staging/rtl8723bs/core/rtw_mlme.c:1100:24: warning: variable
‘pwrpriv’ set but not used [-Wunused-but-set-variable]
   struct pwrctrl_priv *pwrpriv;
                        ^~~~~~~

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200427032342.27211-7-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:29:42 +02:00
Jason Yan
47548aa94c staging: rtl8723bs: core: remove set but not used 'listen_interval'
Fix the following gcc warning:

drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:1173:18: warning: variable
‘listen_interval’ set but not used [-Wunused-but-set-variable]
  u16 capab_info, listen_interval;
                  ^~~~~~~~~~~~~~~

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200427032342.27211-6-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:29:42 +02:00
Jason Yan
3a0514a955 staging: rtl8723bs: core: remove set but not used 'algthm'
Fix the following gcc warning:

drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:1087:33: warning: variable
‘algthm’ set but not used [-Wunused-but-set-variable]
  unsigned int seq, len, status, algthm, offset;
                                 ^~~~~~

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200427032342.27211-5-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:29:42 +02:00
Jason Yan
baae10fe86 Staging: rtl8723bs: core: remove set but not used 'ptxservq'
Fix the following gcc warning:

drivers/staging/rtl8723bs/core/rtw_sta_mgt.c:556:19: warning: variable
‘ptxservq’ set but not used [-Wunused-but-set-variable]
  struct tx_servq *ptxservq;
                   ^~~~~~~~

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200427032342.27211-4-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:29:41 +02:00
Jason Yan
5899458442 staging: rtl8723bs: os_dep: remove set but not used 'size'
And also remove the NULL check before kfree() because kfree() can handle
NULL pointers correctly.

Fix the following gcc warning:

drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:157:6: warning:
variable ‘size’ set but not used [-Wunused-but-set-variable]
  u32 size = 0;
      ^~~~

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200427032342.27211-3-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:29:41 +02:00
Jason Yan
fc84701810 staging: rtl8723bs: os_dep: remove set but not used 'uintRet'
Fix the following gcc warning:

drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:2564:22: warning:
variable ‘uintRet’ set but not used [-Wunused-but-set-variable]
         unsigned int uintRet = 0;
                      ^~~~~~~

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200427032342.27211-2-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:29:41 +02:00
Oscar Carter
10b674be0a staging: vt6656: Remove duplicate code in vnt_rf_table_download
Replace three while loops with three calls to the vnt_control_out_blocks
function. This way avoid repeat a functionality that already exists.

Also remove the variables that now are not used.

Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200425151747.8199-4-oscar.carter@gmx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:26:29 +02:00
Oscar Carter
d78b62c3ea staging: vt6656: Use return instead of goto
Replace the "goto" statements with a direct "return ret" as the jump
label only returns the ret variable.

Also, remove the unnecessary variable initialization because the ret
variable is set a few lines later.

Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200425151747.8199-3-oscar.carter@gmx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:26:29 +02:00
Oscar Carter
8a5baa66b0 staging: vt6656: Remove the local variable "array"
Remove the local variable "array" and all the memcpy function calls
because this copy operation from different arrays to this variable is
unnecessary.

The vnt_control_out function already does a kmemdup copy of its const
char *buffer argument and this was made unnecessary by:

commit 12ecd24ef9
("staging: vt6656: use off stack for out buffer USB transfers.")
Author: Malcolm Priestley <tvboxspy@gmail.com>
Date:   Sat Apr 22 11:14:57 2017 +0100

    staging: vt6656: use off stack for out buffer USB transfers.

    Since 4.9 mandated USB buffers be heap allocated this causes the driver
    to fail.

    Since there is a wide range of buffer sizes use kmemdup to create
    allocated buffer.

So, the same result can be achieved using the arrays directly.

Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200425151747.8199-2-oscar.carter@gmx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:26:29 +02:00
Rylan Dmello
5fa83c2566 staging: qlge: Remove print statements for lbq_clean_idx and lbq_free_cnt
Remove debug print statements referring to non-existent fields
'lbq_clean_idx' and 'lbq_free_cnt' in the 'rx_ring' struct, which causes
a compilation failure when QL_DEV_DUMP is set.

These fields were initially removed as a part of commit aec626d209
("staging: qlge: Update buffer queue prod index despite oom") in 2019.

Their replacement fields ('next_to_use' and 'next_to_clean') are already
being printed, so this patch does not add new debug statements for them.

Signed-off-by: Rylan Dmello <mail@rylan.coffee>
Link: https://lore.kernel.org/r/aa7e0197f4e34cec0855124e45696e33dd9527e5.1587959245.git.mail@rylan.coffee
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:25:26 +02:00
Rylan Dmello
2d2aba6c0f staging: qlge: Remove print statement for vlgrp field
Remove statement that tries to print the non-existent 'vlgrp' field
in the 'ql_adapter' struct, which causes a compilation failure when
QL_DEV_DUMP is set.

vlgrp seems to have been removed from ql_adapter as a part of
commit 18c49b9177 ("qlge: do vlan cleanup") in 2011.

vlgrp might be replaced by the 'active_vlans' array introduced in the
aforementioned commit. But I'm not sure if printing all 64 values of
that array would help with debugging this driver, so I'm leaving it
out of the debug code in this patch.

Signed-off-by: Rylan Dmello <mail@rylan.coffee>
Link: https://lore.kernel.org/r/51bae37a54d414491779e4a3329508cc864ab900.1587959245.git.mail@rylan.coffee
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:25:26 +02:00
Rylan Dmello
7b58387cd5 staging: qlge: Remove unnecessary parentheses around struct field
Remove unnecessary parentheses around a struct field accessor that
causes a build failure when QL_DEV_DUMP is set.

Signed-off-by: Rylan Dmello <mail@rylan.coffee>
Link: https://lore.kernel.org/r/4dea7a7fae6a56c51cc19228b82a3c230029f54b.1587959245.git.mail@rylan.coffee
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:25:26 +02:00
Malcolm Priestley
9075e3180e staging: vt6656: Remove preamble_type setting from vnt_tx_packet.
preamble_type is set in vnt_bss_info_changed no need to set it
here.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/04874ae5-0859-7cb5-619a-ac96a207be5d@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:25:26 +02:00
Malcolm Priestley
7d1a8c9849 staging: vt6656: Remove set short time in vnt_init_registers.
The short time is set in vnt_bss_info_changed no need to set it
here.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/a2bfc4f5-3f7f-3718-6056-2907a004477f@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:25:26 +02:00
Malcolm Priestley
ea0c2a6214 staging: vt6656: rxtx: remove duration_id and void returns.
duration_id is not used by driver anymore so remove the returns
and set all functions in patch to void.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/04a9c19f-c374-c175-6e46-d1bfbab2f42e@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:19:13 +02:00
Michael Straube
de7db0dc0e staging: rtl8188eu: remove some superfluous comments
Remove some obviously superflous comments.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20200425092822.19925-1-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:19:13 +02:00
Oscar Carter
345f2d84dd staging: vt6656: Add formula to the vnt_rf_addpower function
Use a formula to calculate the return value of the vnt_rf_addpower
function instead of the "if" statement with literal values for every
case.

Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200425141514.5528-1-oscar.carter@gmx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:19:13 +02:00
Oscar Carter
f5e5e3024c staging: vt6656: Remove functions' documentation
Remove the functions' documentation as the names of the functions are
clear enought. Also, the actual documentation it's not correct in all
cases.

Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200425134257.4502-3-oscar.carter@gmx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:16:50 +02:00
Oscar Carter
81969fd8ab staging: vt6656: Check the return value of vnt_control_out_* calls
Check the return value of vnt_control_out_* function calls. When
necessary modify the function prototype to be able to return the new
checked error code.

It's safe to modify all the function prototypes without fix the call
because the only change is the return value from void to int. If before
the call didn't check the return value, now neither.

Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200425134257.4502-2-oscar.carter@gmx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:16:49 +02:00
Ivan Safonov
628cbd971a staging:r8188eu: avoid skb_clone for amsdu to msdu conversion
skb clones use same data buffer,
so tail of one skb is corrupted by beginning of next skb.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Link: https://lore.kernel.org/r/20200423191404.12028-1-insafonov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:16:49 +02:00
Jérôme Pouiller
f158242af8 staging: wfx: update list of errors
The device raises error indications when it thinks there is a bug in the
driver and it can't recover it (while it raises exception when a bug is
detected in the device).

The current list of of errors was a bit dated.

This patch cleans up the list of errors and the associated message. It
is also the right time to clean up the way the error indications are
handled. Replace the switch..case with a clean loop over an array.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-18-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:29 +02:00
Jérôme Pouiller
be13e854bf staging: wfx: fix display of exception indication
Until now, the exception received from the chip was only displayed if
driver was compiled with DEBUG enabled. It was not very convenient to
help users. We prefer to show the exception unconditionally.

In add, this patch provides the semantic of the first bytes of the
struct.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-17-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:29 +02:00
Jérôme Pouiller
fa5a345e0f staging: wfx: fix messages names in tracepoints
The names of the hardware interface messages are not displayed correctly
in tracepoints. Thus, REQ_JOIN is displayed JOIN_REQ. Fix that in order
to get the names as defined in headers of HIF API.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-16-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:28 +02:00
Jérôme Pouiller
508d99375f staging: wfx: update list of known messages in tracepoints
Some messages are missing from the list of symbolic messages defined in
traces.h. Add them.

Also sort the list in order to simplify next changes.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-15-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:28 +02:00
Jérôme Pouiller
ef27a25628 staging: wfx: also show unnamed counters fields
The struct hif_mib_extended_count_table contains some debug information
accessible from the debugfs. The struct contains not yet used fields at
the end. In order to support future firmware versions, this patch also
show these not yet named fields.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-14-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:28 +02:00
Jérôme Pouiller
2760220700 staging: wfx: show counters of all interfaces
The device keep up to date three series of stats. One for each
virtual interface and one for the whole device.

Until to now, the stats for the whole device were unavailable. Moreover,
it is interesting to retrieve counters for all interfaces even if they
are not awake.

Change the counters available in debugfs in order to retrieve stats
from all interfaces.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-13-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:28 +02:00
Jérôme Pouiller
6ae0878b48 staging: wfx: fix double init of tx_policy_upload_work
The work_struct tx_policy_upload_work was initialized twice.

Fixes: 99879121bf ("staging: wfx: fix the cache of rate policies on interface reset")
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-12-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:28 +02:00
Jérôme Pouiller
29d84944ca staging: wfx: fix the warning "inconsistent notification"
In some circumstances, Tx traffic is sent without associated station but
the station exists when the Tx status is received. Beside that, the
driver keep a counter associated to each station. So, in this case, the
counter is not incremented, but is decremented. In this case a warning
"inconsistent notification" appears:

   ------------[ cut here ]------------
   WARNING: CPU: 3 PID: 82 at /home/jerome/wfx/data_tx.c:469 wfx_skb_dtor+0x1a4/0x1d4 [wfx]
   inconsistent notification
   Modules linked in: [...]
   CPU: 3 PID: 82 Comm: kworker/3:1H Tainted: G         C O      4.19.57-v7l+ #1244
   Hardware name: BCM2835
   Workqueue: events_highpri bh_work [wfx]
   [<c0212c8c>] (unwind_backtrace) from [<c020d49c>] (show_stack+0x20/0x24)
   [<c020d49c>] (show_stack) from [<c0976220>] (dump_stack+0xd4/0x118)
   [<c0976220>] (dump_stack) from [<c0222270>] (__warn+0x104/0x11c)
   [<c0222270>] (__warn) from [<c02222e0>] (warn_slowpath_fmt+0x58/0x74)
   [<c02222e0>] (warn_slowpath_fmt) from [<bf497b48>] (wfx_skb_dtor+0x1a4/0x1d4 [wfx])
   [<bf497b48>] (wfx_skb_dtor [wfx]) from [<bf4988b4>] (wfx_tx_confirm_cb+0x198/0x2f0 [wfx])
   [<bf4988b4>] (wfx_tx_confirm_cb [wfx]) from [<bf49d054>] (hif_tx_confirm+0x50/0x70 [wfx])
   [<bf49d054>] (hif_tx_confirm [wfx]) from [<bf49d42c>] (wfx_handle_rx+0x128/0x22c [wfx])
   [<bf49d42c>] (wfx_handle_rx [wfx]) from [<bf4953cc>] (bh_work+0x3cc/0x964 [wfx])
   [<bf4953cc>] (bh_work [wfx]) from [<c023dab8>] (process_one_work+0x170/0x458)
   [<c023dab8>] (process_one_work) from [<c023ddfc>] (worker_thread+0x5c/0x5a4)
   [<c023ddfc>] (worker_thread) from [<c02440e8>] (kthread+0x138/0x168)
   [<c02440e8>] (kthread) from [<c02010ac>] (ret_from_fork+0x14/0x28)
   Exception stack(0xee199fb0 to 0xee199ff8)
   9fa0:                                     00000000 00000000 00000000 00000000
   9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
   9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
   ---[ end trace 64b9e754e12ef7de ]---

This patch fix this race between the station creation and the Tx data.

Fixes: 7d2d2bfdeb ("staging: wfx: relocate "buffered" information to sta_priv")
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-11-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:28 +02:00
Jérôme Pouiller
87066173e3 staging: wfx: fix overflow in frame counters
It has been reported that trying to send small packets of data could
produce a "inconsistent notification" warning.

It seems that in some circumstances, the number of frame queued in the
driver could greatly increase and exceed UCHAR_MAX. So the field
"buffered" from struct sta_priv can overflow.

Just increase the size of "bueffered" to fix the problem.

Fixes: 7d2d2bfdeb ("staging: wfx: relocate "buffered" information to sta_priv")
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-10-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:27 +02:00
Jérôme Pouiller
bfe2eb23d9 staging: wfx: fix highest Rx value declared in ieee80211_supported_band
The highest Rx value declared in ieee80211_supported_band had two
problems:
    1. The value should be little endian
    2. ShortGI was not taken into account. So value should be 72 instead
       of 65.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-9-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:27 +02:00
Jérôme Pouiller
5f041538e2 staging: wfx: add an explicit warning when chip detect too high temperature
Device is able to measure its temperature and raise warning when this
one is too high. If the the temperature is even higher, the chipis also
able to send an error just before to stop responding.

Until now, the error message was "asynchronous error: unknown (6)".

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-8-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:27 +02:00
Jérôme Pouiller
1d52d29983 staging: wfx: add support for 'device too hot' indication
Device is able to detect a high temperature. In this case, the traffic
is not allowed to be sent until the temperature decrease.

This patch detects the warnings raised by the device and stop the
traffic accordingly. It also add a delayed task as safeguard in case the
chip would never send the indication that the temperature decrease.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-7-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:27 +02:00
Jérôme Pouiller
8e47df5fc4 staging: wfx: fix CAB sent at the wrong time
wfx_suspend_resume_mc() is called when the device is about to sent a
DTIM. This is the right moment to enqueue Content After DTIM Beacon
(CAB).

However, wfx_suspend_resume_mc() is also called when the DTIM period
ends. Until now, this event did also trig CAB.

Note this issue did not have too much impact since when a CAB is sent
outside of DTIM window, an error is reported by the firmware and
mac80211 retries to send the data.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-6-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:27 +02:00
Jérôme Pouiller
dd5eba1bb5 staging: wfx: fix support for AP that do not support PS-Poll
When multiple virtual interfaces (on different channels) are in use, the
device ask to activate Power Save on station interfaces. The device
developers recommends to use legacy PS-Poll in this case since it is the
mode that disturb the less the other interface. However, some AP start
to not answer anymore to PS-Poll. The device is able to detect this case
and return a special warning in this case.

So, this commit catch the warning and force usage of FastPS in this
case.

In order to confuse the less possible the other interface a small FastPS
period is used (30ms).

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-5-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:27 +02:00
Jérôme Pouiller
7acf88f864 staging: wfx: mark chip frozen on error indication
When the driver receive an error indication, it means the chip won't
answer to any command anymore. Therefore, mark the chip frozen when it
happens (as when the driver receive an exception indication).

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-4-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:26 +02:00
Jérôme Pouiller
18f0dddf1f staging: wfx: change the field chip_frozen into a boolean
The field chip_frozen is declared as an integer, but it is only used as
a boolean. So, convert it into a boolean.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-3-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:26 +02:00
Jérôme Pouiller
7508f5d90d staging: wfx: fix (future) TDLS support
The device does not expect that the AP to have a link-id. However, TDLS
peers should have a a link-id.

The driver does not yet declare itself as supporting TDLS.
Notwithstanding, fix the code in anticipation of the support of TDLS.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-2-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:14:26 +02:00
Suraj Upadhyay
2405c85691 staging: wfx: cleanup long lines in data_tx.c
Break lines with length over 80 characters to
conform to the linux coding style and refactor
wherever necessary.

Reviewed-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Signed-off-by: Suraj Upadhyay <usuraj35@gmail.com>
Link: https://lore.kernel.org/r/20200425113234.GA14492@blackclown
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-28 14:02:59 +02:00
Wolfram Sang
8839e4605e Revert "i2c: tegra: Better handle case where CPU0 is busy for a long time"
This reverts commit a900aeac25 because
regressions were showing up.

Suggested-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/dmaengine/20200319201140.17451-1-digetx@gmail.com/
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-04-28 13:31:17 +02:00
Wolfram Sang
deb821ffe2 Revert "i2c: tegra: Synchronize DMA before termination"
This reverts commit 8814044fe0 because
regressions were showing up.

Suggested-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/dmaengine/20200319201140.17451-1-digetx@gmail.com/
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-04-28 13:31:16 +02:00