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Author SHA1 Message Date
Kaaira Gupta
52a39b075c staging: exfat: remove sync_alloc_bitmap() 
sync_alloc_bitmap() is not called anywhere, hence remove it from
exfat_core.c and exfat.h

Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200223192347.GA20286@kaaira-HP-Pavilion-Notebook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 20:29:05 +01:00
Colin Ian King
42228d9edf staging: speakup: remove redundant initialization of pointer p_key 
Pointer p_key is being initialized with a value that is never read,
it is assigned a new value later on. The initialization is redundant
and can be removed.

Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Unused value")
Link: https://lore.kernel.org/r/20200223153954.420731-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:22:07 +01:00
Geert Uytterhoeven
6d95783883 staging: pi433: overlay: Convert to sugar syntax 
Using overlay sugar syntax makes the DTS overlay files easier to read
(and write).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200221122133.32024-4-geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Geert Uytterhoeven
43b83f1a4c staging: pi433: overlay: Fix reg-related warnings 
When running "scripts/dtc/dtc -@ -I dts -O dtb -o pi433-overlay.dtbo.1
drivers/staging/pi433/Documentation/devicetree/pi433-overlay.dts":

    drivers/staging/pi433/Documentation/devicetree/pi433-overlay.dts:13.12-15.6: Warning (unit_address_vs_reg): /fragment@0/__overlay__/spidev@0: node has a unit name, but no reg property
    drivers/staging/pi433/Documentation/devicetree/pi433-overlay.dts:17.12-19.6: Warning (unit_address_vs_reg): /fragment@0/__overlay__/spidev@1: node has a unit name, but no reg property

Add the missing "reg" properties to fix this.

    drivers/staging/pi433/Documentation/devicetree/pi433-overlay.dts:14.5-15: Warning (reg_format): /fragment@0/__overlay__/spidev@0:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
    drivers/staging/pi433/Documentation/devicetree/pi433-overlay.dts:19.5-15: Warning (reg_format): /fragment@0/__overlay__/spidev@1:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)

Add the missing "#{address,size}-cells" to fix this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200221122133.32024-3-geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Geert Uytterhoeven
ea3bc6acbf staging: pi433: overlay: Fix Broadcom vendor prefix 
checkpatch.pl says:

    WARNING: DT compatible string "bcm,bcm2708" appears un-documented -- check ./Documentation/devicetree/bindings/

The vendor prefix of Broadcom Corporation is "brcm", not "bcm".

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200221122133.32024-2-geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Colin Ian King
999d544c60 staging: rtl8723bs: core: remove redundant zero'ing of counter variable k 
The zero'ing of counter variable k is redundant as it is never read
after breaking out of the while loop. Remove it.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200223152840.418439-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Colin Ian King
49ad571f70 staging: rtl8188eu: remove redundant assignment to cond 
Variable cond is initialized to a value that is never read and it
is re-assigned later. The initialization is redundant and can be
removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200223151858.416499-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Colin Ian King
5a436cb134 staging: rtl8723bs: remove temporary variable CrystalCap 
Currently variable CrystalCap is being initialized with the value
0x20 that is never read so that is redundant and can be removed.
Clean up the code by removing the need for variable CrystalCap
since the calculation of the return value is relatively simple.

Addresses-Coverity: ("Unused Value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200223151438.415542-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Colin Ian King
df08620eab staging: rtl8192e: remove redundant initialization of variable init_status 
The pointer init_status is being initialized with a value that is never
read, it is being updated later on. The initialization is redundant
and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200222200105.201869-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Ajay Singh
31e234948e staging: wilc1000: use YAML schemas for DT binding documentation 
Use YAML schemas for wilc1000 DT binding documentations. Currently, the
files are present in '/drivers/staging/wilc1000/' but these will be
moved to '/Documentation/devicetree/bindings/net/wireless/' later once
the driver move out-of-staging.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200221123817.16643-1-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Ajay Singh
6c411581ca staging: wilc1000: avoid double unlocking of 'wilc->hif_cs' mutex 
Possible double unlocking of 'wilc->hif_cs' mutex was identified by
smatch [1]. Removed the extra call to release_bus() in
wilc_wlan_handle_txq() which was missed in earlier commit fdc2ac1aaf
("staging: wilc1000: support suspend/resume functionality").

[1]. https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org/thread/NOEVW7C3GV74EWXJO3XX6VT2NKVB2HMT/

Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200221170120.15739-1-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Kaaira Gupta
007b91435b staging: octeon: match parentheses alignment 
match the next line with open parentheses by giving appropriate tabs.

Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200220201033.GA14855@kaaira-HP-Pavilion-Notebook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Kaaira Gupta
57dd99864f staging: octeon: add blank line after union 
add a blank line after union declaration to fix checkpatch.pl warning

Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200220195654.GA14056@kaaira-HP-Pavilion-Notebook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:49 +01:00
Kaaira Gupta
bc8942bc49 staging: octeon: add space around '+' and parentheses 
Fix checkpatch.pl warnings of required spaces around '+' sign in
multiple lines in octeon-stubs.h by adding spaces. Also add space before
parentheses in the same file to fix checkpatch.pl warning.

Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200220194820.GA13689@kaaira-HP-Pavilion-Notebook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:20:48 +01:00
Kaaira Gupta
64e4965942 staging: qlge: emit debug and dump at same level 
Simplify code in ql_mpi_core_to_log() by calling print_hex_dump()
instead of existing functions so that the debug and dump are
emitted at the same KERN_<LEVEL>

Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200223173132.GA13649@kaaira-HP-Pavilion-Notebook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:18:54 +01:00
Kaaira Gupta
67e6cf7338 staging: qlge: add braces around macro arguments 
Fix checkpatch.pl warnings of adding braces around macro arguments to
prevent precedence issues by adding braces in qlge_dbg.c

Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200221195649.GA18450@kaaira-HP-Pavilion-Notebook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:18:54 +01:00
Gustavo A. R. Silva
5979afa2c4 staging: Replace zero-length array with flexible-array member 
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Link: https://lore.kernel.org/r/20200220132908.GA30501@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:18:54 +01:00
Kaaira Gupta
cf7e44daa7 staging: qlge: add braces on all arms of if-else 
fix all checkpatch.pl warnings of 'braces {} should be used on all arms
of this statement' in the file qlge_ethtool.c by adding the braces.

Acked-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200221202904.GA19627@kaaira-HP-Pavilion-Notebook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:18:33 +01:00
Kaaira Gupta
86c468a4f8 staging: exfat: remove exfat_fat_sync() 
exfat_fat_sync() is not called anywhere, hence remove it from
exfat_cache.c and exfat.h

Acked-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200219161738.GA22282@kaaira-HP-Pavilion-Notebook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:17:25 +01:00
Tetsuhiro Kohada
bb9397a356 staging: exfat: remove symlink feature. 
Remove symlink feature completely.

Becouse
-Uses reserved areas(defined in the Microsoft exfat specification), causing future incompatibilities.
-Not described in Microsoft exfat specifications or SD standards.
-For REMOVABLE media, causes incompatibility with other implementations.
-Not supported by other major exfat drivers.
-Not implemented symlink feature in linux FAT/VFAT.

Remove this feature completely because of serious media compatibility issues.
(Can't enable even with CONFIG)

If you have any questions about this patch, please let me know.

Reviewed-by: Takahiro Mori <Mori.Takahiro@ab.MitsubishiElectric.co.jp>
Acked-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Tetsuhiro Kohada <Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp>
Link: https://lore.kernel.org/r/20200219055727.12867-1-Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-23 19:17:04 +01:00
Sandesh Kenjana Ashok
55b9b8f67d staging: fsl-dpaa2: ethsw: ethsw.c: Fix line over 80 characters 
Issue found by checkpatch.

Signed-off-by: Sandesh Kenjana Ashok <sandeshkenjanaashok@gmail.com>
Link: https://lore.kernel.org/r/20200214232143.GA20675@SandeshPC
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-17 18:14:26 +01:00
Tetsuhiro Kohada
23aa10344c staging: exfat: dedicate count_entries() to sub-dir counting. 
count_entries() function is only used to count sub-dirs.
Clarify the role and rename to count_dir_entries().

Signed-off-by: Tetsuhiro Kohada <Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp>
Link: https://lore.kernel.org/r/20200217072941.34116-2-Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-17 18:14:26 +01:00
Tetsuhiro Kohada
fa4f4ce50c staging: exfat: remove DOSNAMEs. 
remove 'dos_name','short_name' and related definitions.

'dos_name' and 'short_name' are definitions before VFAT.
These are never used in exFAT.

Signed-off-by: Tetsuhiro Kohada <Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp>
Link: https://lore.kernel.org/r/20200217072941.34116-1-Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-17 18:14:26 +01:00
Ajay Singh
b1f1756154 staging: wilc1000: define macros to replace magic number values 
Define macros for global as well as SPI/SDIO specific register to avoid
use of magic numbers.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-9-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-14 08:20:12 -08:00
Ajay Singh
5832cbe21c staging: wilc1000: use short name for hif local variable in chip_wakeup() 
Make use of a shorter name for 'hif' variable to avoid possible 80
character checkpatch warning while the replacing hardcoded value with
macros in chip_wakeup().

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-8-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-14 08:20:11 -08:00
Ajay Singh
167bd21c31 staging: wilc1000: define macros for different register address for SDIO 
Instead of using hardcoded value for SDIO register address added the
macro for them.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-7-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-14 08:20:11 -08:00
Ajay Singh
a088ae77f4 staging: wilc1000: use commmon function to set SDIO block size 
Use common function wilc_sdio_set_block_size() to set the block size for
SDIO.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-6-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-14 08:20:11 -08:00
Ajay Singh
bf13984d51 staging: wilc1000: make use of ALIGN macro 
Make use of 'ALIGN' macro to align the size data value.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-5-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-14 08:20:11 -08:00
Ajay Singh
eda308be64 staging: wilc1000: refactor interrupt handling for sdio 
Make use of FIELD_PREP/FIELD_GET macro to refactor the interrupt
handling for SDIO.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-4-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-14 08:20:11 -08:00
Ajay Singh
759af9b84e staging: wilc1000: remove use of MAX_NUN_INT_THRPT_ENH2 macro 
Make use of MAX_NUM_INT existing macro to handle the maximum supported
interrupts count and removed MAX_NUN_INT_THRPT_ENH2 macro.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-3-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-14 08:20:11 -08:00
Ajay Singh
38f193dff5 staging: wilc1000: make use of FIELD_GET/_PREP macro 
Simplified the code by making use of FIELD_GET/_PREP bitfield macro.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-2-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-14 08:20:10 -08:00
Lukasz Szczesny
c77761d660 staging: rtl8723bs: Fix spacing issues 
This patch fixes spacing issues reported by checkpatch.

Signed-off-by: Lukasz Szczesny <luk@wybcz.pl>
Link: https://lore.kernel.org/r/20200212230834.GA294323@localhost
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-14 08:18:23 -08:00
Marcelo Diop-Gonzalez
e232767873 staging: vc04_services: Fix wrong early return in next_service_by_instance() 
If kref_get_unless_zero() fails, we should keep looking for the
next service, since the callers of this function expect that a NULL
return value means there are no more.

Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com>
Link: https://lore.kernel.org/r/20200213194001.130110-1-marcgonzalez@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-13 11:51:14 -08:00
Chris Packham
8ef0c4f064 Revert "staging/octeon: Mark Ethernet driver as BROKEN" 
This reverts commit 075a1e87d1. Now that
the build issues have been fixed we can resume build testing.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20200205001116.14096-7-chris.packham@alliedtelesis.co.nz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:50:33 -08:00
Chris Packham
9da303533b MIPS: octeon: remove typedef declaration for cvmx_pko_command_word0 
Remove the typedef and update usage to use the union.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20200205001116.14096-6-chris.packham@alliedtelesis.co.nz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:50:33 -08:00
Chris Packham
f7d2bdcb7e MIPS: octeon: remove typedef declaration for cvmx_helper_link_info 
Remove declaration of union cvmx_helper_link_info as typedef and update
uses to use the union.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20200205001116.14096-5-chris.packham@alliedtelesis.co.nz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:50:33 -08:00
Chris Packham
f9546de43d MIPS: octeon: remove typedef declaration for cvmx_wqe 
Remove typedef declaration from struct cvmx_wqe and replace its previous
uses with new struct declaration.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20200205001116.14096-4-chris.packham@alliedtelesis.co.nz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:50:32 -08:00
Chris Packham
422d97b8b0 Revert "staging: octeon: delete driver" 
This reverts commit 710d7fbe21.
Re-instate the code so subsequent commits can clean it up and get it
building properly.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20200205001116.14096-3-chris.packham@alliedtelesis.co.nz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:50:32 -08:00
Chris Packham
96b06c0a16 Revert "staging: octeon-usb: delete the octeon usb host controller driver" 
This reverts commit 95ace52e40. Re-instate
the code so subsequent commits can clean it up and get it building
properly.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20200205001116.14096-2-chris.packham@alliedtelesis.co.nz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:50:32 -08:00
Greg Kroah-Hartman
caa6772db4 Staging: remove wusbcore and UWB from the kernel tree. 
It's been over 6 months, and no one has noticed that these drivers are
deleted, probably because no one actually has this hardware.  As no one
has volunteered to maintain the code, let's drop it for good.

Link: https://lore.kernel.org/r/20200210231417.GA1736729@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:49:17 -08:00
Ajay Singh
4fb8b5aa2a staging: wilc1000: refactor p2p action frames handling API's 
Refactor handling of P2P specific action frames. Make use of 'struct' to
handle the P2P frames instead of manipulating using 'buf' pointer.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200212154503.8835-1-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:47:11 -08:00
Marcelo Diop-Gonzalez
a2203cfe0d staging: vc04_services: don't increment service refcount when it's not needed 
There are a few places where a service's reference count is incremented,
something quick is done, and the refcount is dropped. This can be made
a little simpler/faster by not grabbing a reference in these cases.

Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com>
Link: https://lore.kernel.org/r/ac6186ac888f1acf489b5b504efcba8b0d6a8b25.1581532523.git.marcgonzalez@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:40:44 -08:00
Marcelo Diop-Gonzalez
3c27a36f27 staging: vc04_services: use kref + RCU to reference count services 
Currently reference counts are implemented by locking service_spinlock
and then incrementing the service's ->ref_count field, calling
kfree() when the last reference has been dropped. But at the same
time, there's code in multiple places that dereferences pointers
to services without having a reference, so there could be a race there.

It should be possible to avoid taking any lock in unlock_service()
or service_release() because we are setting a single array element
to NULL, and on service creation, a mutex is locked before looking
for a NULL spot to put the new service in.

Using a struct kref and RCU-delaying the freeing of services fixes
this race condition while still making it possible to skip
grabbing a reference in many places. Also it avoids the need to
acquire a single spinlock when e.g. taking a reference on
state->services[i] when somebody else is in the middle of taking
a reference on state->services[j].

Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com>
Link: https://lore.kernel.org/r/3bf6f1ec6ace64d7072025505e165b8dd18b25ca.1581532523.git.marcgonzalez@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:40:43 -08:00
Kaaira Gupta
0e35fa615e staging: gasket: unify multi-line string 
Fix three checkpatch.pl warnings of 'quoted string split across lines'
in gasket_core.c by merging the strings in one line.
Though some strings
are over 80 characters long, fixing this warning is necessary to ease
grep-ing the source for printk.

Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in>
Link: https://lore.kernel.org/r/20200212175826.GA5967@kaaira-HP-Pavilion-Notebook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:37:06 -08:00
Marcelo Diop-Gonzalez
032974659b staging: vc04_services: fix indentation alignment in a few places 
This fixes some checkpatch warnings about incorrect indentation levels

Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com>
Link: https://lore.kernel.org/r/feadcde28a987fad12011a5f17b29f2147c09e12.1581532523.git.marcgonzalez@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:37:06 -08:00
Marcelo Diop-Gonzalez
110700173e staging: vc04_services: remove unneeded parentheses 
there are extra parentheses around many conditional statements
that make things a little harder to read

Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com>
Link: https://lore.kernel.org/r/41511abf64f73af62f21f8e0c7457edc289af905.1581532523.git.marcgonzalez@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:37:05 -08:00
Marcelo Diop-Gonzalez
147eda2974 staging: vc04_services: remove unused function 
vchiq_get_service_fourcc() doesn't seem to be used anywhere

Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com>
Link: https://lore.kernel.org/r/ed8b0034e316b2a81b621e9fca43f8368334b191.1581532523.git.marcgonzalez@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-12 13:37:05 -08:00
Gustavo A. R. Silva
8acd7c56c1 staging: greybus: Replace zero-length array with flexible-array member 
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertenly introduced[3] to the codebase from now on.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Link: https://lore.kernel.org/r/20200211211219.GA673@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-11 14:04:53 -08:00
Gustavo A. R. Silva
1f9d6a3d2e staging: unisys: visorinput: Replace zero-length array with flexible-array member 
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertenly introduced[3] to the codebase from now on.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Link: https://lore.kernel.org/r/20200211211722.GA1640@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-11 14:04:53 -08:00
Pragat Pandya
2ed9d77aa7 staging: exfat: Rename variable 'AccessTimestamp' to 'access_timestamp' 
Fix checkpatch warning: Avoid CamelCase
Change all occurrences of identifier "AccessTimestamp" to
"access_timestamp"

Signed-off-by: Pragat Pandya <pragat.pandya@gmail.com>
Link: https://lore.kernel.org/r/20200210183558.11836-20-pragat.pandya@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-02-11 11:25:43 -08:00