Commit Graph

783008 Commits

Author SHA1 Message Date
Aymen Qader
5443a1e41c staging: vc04_services: Fix "space prohibited"
This patch fixes the checkpatch.pl error:

ERROR: space prohibited after/before that open/closed parenthesis

in the interface/vchi directory.

Signed-off-by: Aymen Qader <qader.aymen@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-25 20:44:58 +02:00
Tuomas Tynkkynen
df7c9da1fd staging: vc04_services: Remove unused vchiq_genversion script
As far as I can tell, this has never been used.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-25 20:44:57 +02:00
Phil Elwell
c683db8860 staging/vc04_services: Use correct cache line size
Use the compatible string in the DTB to select the correct cache line
size for the SoC - 32 for BCM2835, and 64 for BCM2836 and BCM2837.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-25 20:44:57 +02:00
Vladimir Zapolskiy
a779df303b Documentation: filesystems: remove reminiscences of POHMELFS
The POHMELFS filesystem was removed in 2012 by commit 6743531986
("staging: pohmelfs: remove drivers/staging/pohmelfs") promising that
a newer version will be included to the kernel, but unfortunately
it didn't happen.

Since likely any delopment of the filesystem is halted, the change removes
the abandoned POHMELFS documentation from the kernel tree.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 15:11:07 +02:00
Michael Straube
31ab98f0c8 staging: rtl8188eu: clean function definitions - style
Do not line break function definitions where not needed and
move the return type to the same line.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:33:00 +02:00
Michael Straube
9b2cf1ffed staging: rtl8188eu: rename parameter of Hal_GetChnlGroup88E()
Rename function parameter of Hal_GetChnlGroup88E() to avoid CamelCase.
pGroup -> group

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:33:00 +02:00
Michael Straube
4aaf2b7312 staging: rtl8188eu: change return type of Hal_GetChnlGroup88E()
After the removal of code valid only for 5 GHz the function
Hal_GetChnlGroup88E returns always true.

Change the return type to void and remove the variable bIn24G.

Remove the tests for the return value and the variable bIn24G
from the only user Hal_ReadTxPowerInfo88E().

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:33:00 +02:00
Michael Straube
0c8c0f744d staging: rtl8188eu: remove 5 GHz code from Hal_GetChnlGroup88E()
Remove code valid only for 5 GHz from Hal_GetChnlGroup88E().
This addresses the below TODO item.

- find and remove remaining code valid only for 5 GHz. Most of the obvious
  ones have been removed, but things like channel > 14 still exist.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:33:00 +02:00
Hans de Goede
beed1ce294 staging: vboxvideo: Add vbox_bo_k[un]map helper functions
Add vbox_bo_k[un]map helper functions instead of having code directly
poking struct vbox_bo internals.

While touch neighboring code anyways also fix a return -PTR_ERR(info),
which should be return PTR_ERR(info).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
cfc1fc63be staging: vboxvideo: Move bo_[un]resere calls into vbox_bo_[un]pin
We always need to reserve the bo around a pin / unpin, so move the
reservation there.

This allows removing the vbox_fb_[un]pin helpers.

Note this means that we now no longer hold the bo reserved while
k[un]mapping it in vbox_fb.c this is fine as it is not necessary
to hold it reserved for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
114094c83e staging: vboxvideo: Fix NULL ptr deref in vbox_set_up_input_mapping()
When vbox_set_up_input_mapping() gets called the first crtc might be
disable and not have a fb at all, triggering a NUL ptr deref at:

			vbox->input_mapping_width = CRTC_FB(crtci)->width;

Instead of using the fb from the crtc with id 0, just use the fb from
the first crtc with a fb. This is in the single_framebuffer = true path,
so all crtc-s point to the same fb anyways.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
0fdda2ce74 staging: vboxvideo: Move pin / unpin of fb out of vbox_crtc_set_base_and_mode
Move pin / unpin of fb out of vbox_crtc_set_base_and_mode() so that it can
be used to implement the atomic_update drm_plane_helper_func for the primary
plane.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
0424d7ba45 staging: vboxvideo: Init fb_info.fix.smem once from fbdev_create
The fbdev compat fb gets pinned into VRAM at creation and then gets pinned
a second time when set as scanout buffer and unpinned when replaced, this
means its pin count never becomes less then 1, so it is always at the same
address and there is no need for the vbox_fbdev_set_base() call.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
cb5eaf187d staging: vboxvideo: Expose creation of universal primary plane
Let's expose the primary plane initialization inside the vboxvideo driver
in preparation for universal planes and atomic.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
f4d6d90f83 staging: vboxvideo: Add fl_flag argument to vbox_fb_pin() helper
Allow specifying where to pin the framebuffer bo, so that this helper can
be used from the cursor code too.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
3498ea8b7e staging: vboxvideo: Fold vbox_drm_resume() into vbox_pm_resume()
vbox_pm_resume() is the only caller of vbox_drm_resume(), so squash the
2 functions into 1.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
01648890f3 staging: vboxvideo: Embed drm_device into driver structure
This is the recommended way to create the drm_device structure,
according to DRM documentation.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
d46709094d staging: vboxvideo: Fold driver_load/unload into probe/remove functions
Fold the driver_load / unload functions into the probe / remove functions
now that we are no longer using the deprecated drm_get_pci_dev() mechanism.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
Hans de Goede
79815ee238 staging: vboxvideo: Move setup of modesetting from driver_load to mode_init
Move the setup of drm modesetting config from vbox_driver_load() to
vbox_mode_init().

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:32:05 +02:00
André Lehmann
7641575ecc staging: rtl8712: replace licence header with SPDX licence id
fixed warning found by checkpatch

Signed-off-by: André Lehmann <lenneman@web.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:29:26 +02:00
Hans de Goede
ae849dfc07 staging: vboxvideo: Let DRM core handle connector registering
Registering the connector explicitly right after creation is not necessary
for modesetting drivers, because drm_dev_register already takes care of
this on the core side, by calling drm_modeset_register_all.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:28:02 +02:00
Lubomir Rintel
33f49571d7 staging: olpc_dcon: add a missing dependency
WARNING: unmet direct dependencies detected for BACKLIGHT_CLASS_DEVICE
    Depends on [n]: HAS_IOMEM [=y] && BACKLIGHT_LCD_SUPPORT [=n]
    Selected by [y]:
    - FB_OLPC_DCON [=y] && STAGING [=y] && X86 [=y] && OLPC [=y] && FB [=y]
                        && I2C [=y] && (GPIO_CS5535 [=n] || GPIO_CS5535 [=n]=n)

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:28:02 +02:00
Nishad Kamdar
5f1a9140dd staging: mt7621-mmc: Delete IRQ_MSG() and its users
This patch removes IRQ_MSG() and its users as currently it is a no-op.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:28:02 +02:00
Chengguang Xu
d41076eaeb staging: erofs: option validation in remount
Add option validation in remount. After this patch, remount
can change recognized options, and for unknown options remount
will fail and report error.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:26:29 +02:00
Chengguang Xu
2ab3dd84c0 staging: erofs: code cleanup for erofs_show_options()
Add new helper erofs_get_fault_rate() to get fault rate instead of
directly getting it from sbi, so we can remove the macro check
surrounding it.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:26:29 +02:00
Chengguang Xu
01e4ae4b68 staging: erofs: code cleanup for option parsing of fault_injection
Define a dummpy function of erofs_build_fault_attr() when macro
CONFIG_EROFS_FAULT_INJECTION is disabled, so that we don't have to
check the macro in calling place. Based on above adjustment,
do proper code cleanup for option parsing of fault_injection.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:26:29 +02:00
Gao Xiang
6614f76530 staging: erofs: simplify return value of `xattr_foreach'
As Dan Carpenter pointed out, there is no need to propagate positive
return values back to its callers.

Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:25:36 +02:00
Gao Xiang
bdf30cef10 staging: erofs: add some comments for xattr subsystem
As Dan Carpenter pointed out, it is better to document what
return values of these callbacks in `struct xattr_iter_handlers'
mean and why it->ofs is increased regardless of success or
failure in `xattr_foreach'.

Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:25:36 +02:00
Gao Xiang
5fb76bb042 staging: erofs: cleanup `z_erofs_vle_normalaccess_readpages'
This patch introduces `__should_decompress_synchronously' to
cleanup `z_erofs_vle_normalaccess_readpages'.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:25:36 +02:00
Gao Xiang
e5e3abbadf staging: erofs: drop multiref support temporarily
Multiref support means that a compressed page could have
more than one reference, which is designed for on-disk data
deduplication. However, mkfs doesn't support this mode
at this moment, and the kernel implementation is also broken.

Let's drop multiref support. If it is fully implemented
in the future, it can be reverted later.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:25:36 +02:00
Gao Xiang
b27661cf99 staging: erofs: fold in `__update_workgrp_llen'
There is the only one user to use `__update_workgrp_llen'.
Fold it in `z_erofs_vle_work_iter_begin' and cleanup related code.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:25:36 +02:00
Gao Xiang
83a3b2fffb staging: erofs: remove redundant CONFIG_EROFS_FS_XATTRs
some CONFIG_EROFS_FS_XATTR conditions were added because of
the historial Linux kernel compatibility, which are unneeded now.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20 12:25:36 +02:00
Chen Gong
9141b60cf6 staging: erofs: replace BUG_ON with DBG_BUGON in data.c
This patch replace BUG_ON with DBG_BUGON in data.c, and add necessary
error handler.

Signed-off-by: Chen Gong <gongchen4@huawei.com>
Reviewed-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 16:35:03 +02:00
Chen Gong
284db12cfd staging: erofs: add trace points for reading zipped data
This patch adds trace points for reading zipped data.

Signed-off-by: Chen Gong <gongchen4@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 16:35:03 +02:00
Gao Xiang
6bec52047f staging: erofs: avoid magic constants when initializing clusterbits
Currently erofs only supports clustersize == blocksize.
and clustersize == 2^n * blocksize will be supported in the future.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 16:35:03 +02:00
Gao Xiang
1e05ff36e6 staging: erofs: complete error handing of z_erofs_do_read_page
This patch completes error handing code of z_erofs_do_read_page.
PG_error will be set when some read error happens, therefore
z_erofs_onlinepage_endio will unlock this page without setting
PG_uptodate.

Reviewed-by: Chao Yu <yucxhao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 16:34:35 +02:00
Gao Xiang
0734ffbf57 staging: erofs: fix a bug when appling cache strategy
As described in Kconfig, the last compressed pack should be cached
for further reading for either `EROFS_FS_ZIP_CACHE_UNIPOLAR' or
`EROFS_FS_ZIP_CACHE_BIPOLAR' by design.

However, there is a bug in z_erofs_do_read_page, it will
switch `initial' to `false' at the very beginning before it decides
to cache the last compressed pack.

caching strategy should work properly after appling this patch.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 16:34:35 +02:00
Gao Xiang
c1ccc8670c staging: erofs: complete error handing of z_erofs_map_blocks_iter
This patch completes error handing of z_erofs_map_blocks_iter
and vle_get_logical_extent_head, including no memory and
io error cases.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 16:34:35 +02:00
Gao Xiang
a07eeddf5b staging: erofs: clean up z_erofs_map_blocks_iter
This patch mainly introduces `vle_map_blocks_iter_ctx' to clean up
z_erofs_map_blocks_iter and vle_get_logical_extent_head.

It changes the return value of `vle_get_logical_extent_head' to int
for the later error handing. In addition, it also renames `pcn' to
`pblk' since only `pblk' exists in erofs compression ondisk format.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 16:33:43 +02:00
Gao Xiang
37ec35a6cc staging: erofs: fix a missing endian conversion
This patch fixes a missing endian conversion in
vle_get_logical_extent_head.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 16:33:42 +02:00
Michael Straube
f4cd8d753a staging: rtl8188eu: simplify function comments
Simplify function comments to a single line.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:30:18 +02:00
Michael Straube
508c745774 staging: rtl8188eu: fix lines over 80 characters
Wrap lines over 80 characters where appropriate to
clear checkpatch warnings.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:30:18 +02:00
Michael Straube
562fd259be staging: rtl8188eu: add missing spaces around operators
Add missing spaces around '|', '-', and '&' to follow kernel coding
style. Reported by checkpatch.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:30:18 +02:00
Michael Straube
2590e4e3a6 staging: rtl8188eu: fix comparsions to false
Use if(!x) instead of if(x == false).

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:30:18 +02:00
Michael Straube
50f2ea8bf8 staging: rtl8188eu: fix comparsions to true
Use if(x) instead of if(x == true).

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:30:18 +02:00
Michael Straube
116bcfdfcf staging: rtl8188eu: remove whitespace
Replace tabs with spaces or just remove spaces in declarations.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:30:18 +02:00
Michael Straube
f14cbe6326 staging: rtl8188eu: remove unnecessary parentheses
Remove unnecessary parentheses as reported by checkpatch
and from conditionals.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:30:18 +02:00
Michael Straube
1ad53b2df9 staging: rtl8188eu: simplify calculation
Simplify calcualation:  * 10 / 2  can be reduced to  * 5
Also cleans missing spaces checkpatch issues.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:30:18 +02:00
Jia-Ju Bai
8204b61a77 staging: rtl8723bs: Fix two sleep-in-atomic-context bugs in _rtw_pwr_wakeup()
The driver may sleep with holding a spinlock.
The function call paths (from bottom to top) in Linux-4.17 are:

[FUNC] msleep
drivers/staging/rtl8723bs/core/rtw_pwrctrl.c, 1243:
	msleep in _rtw_pwr_wakeup
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 510:
	_rtw_pwr_wakeup in rtw_set_802_11_disassociate
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 501:
	spin_lock_bh in rtw_set_802_11_disassociate

[FUNC] msleep
drivers/staging/rtl8723bs/core/rtw_pwrctrl.c, 1255:
	msleep in _rtw_pwr_wakeup
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 510:
	_rtw_pwr_wakeup in rtw_set_802_11_disassociate
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 501:
	spin_lock_bh in rtw_set_802_11_disassociate

To fix these bugs, msleep() is replaced with mdelay().

These bugs are found by my static analysis tool DSAC.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:29:11 +02:00
Jia-Ju Bai
1c8cb89ee9 staging: rtl8723bs: Fix a sleep-in-atomic-context bug in issue_deauth_ex()
The driver may sleep with holding a spinlock.
The function call paths (from bottom to top) in Linux-4.17 are:

[FUNC] msleep
drivers/staging/rtl8723bs/core/rtw_mlme_ext.c, 3805:
	msleep in issue_deauth_ex
drivers/staging/rtl8723bs/core/rtw_mlme_ext.c, 6336:
	issue_deauth_ex in disconnect_hdl
drivers/staging/rtl8723bs/core/rtw_cmd.c, 963:
	disconnect_hdl in rtw_disassoc_cmd
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 506:
	rtw_disassoc_cmd in rtw_set_802_11_disassociate
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 501:
	spin_lock_bh in rtw_set_802_11_disassociate

[FUNC] msleep
drivers/staging/rtl8723bs/core/rtw_mlme_ext.c, 3805:
	msleep in issue_deauth_ex
drivers/staging/rtl8723bs/core/rtw_mlme_ext.c, 6336:
	issue_deauth_ex in disconnect_hdl
drivers/staging/rtl8723bs/core/rtw_cmd.c, 963:
	disconnect_hdl in rtw_disassoc_cmd
drivers/staging/rtl8723bs/core/rtw_mlme.c, 2256:
	rtw_disassoc_cmd in rtw_select_and_join_from_scanned_queue
drivers/staging/rtl8723bs/core/rtw_mlme.c, 2204:
	spin_lock_bh in rtw_select_and_join_from_scanned_queue

To fix this bug, msleep() is replaced with mdelay().

This bug is found by my static analysis tool DSAC.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:29:11 +02:00