Avoid pointer type value compared with 0 to make code clear. Signed-off-by: Haowen Bai <baihaowen@meizu.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1647485822-16717-1-git-send-email-baihaowen@meizu.com
powerpc's asm/prom.h brings some headers that it doesn't need itself. In order to clean it up, first add missing headers in users of asm/prom.h Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/04961364547fe4556e30cb302b0e20a939b83426.1648833027.git.christophe.leroy@csgroup.eu
The sparse tool complains as follows: drivers/macintosh/windfarm_pm121.c:436:24: warning: symbol 'pm121_sys_state' was not declared. Should it be static? This symbol is not used outside of windfarm_pm121.c, so this commit marks it static. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210407125712.4138033-1-yukuai3@huawei.com
Based on 1 normalized pattern(s): released under the term of the gnu gpl v2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 16 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204654.922331175@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Trivial fix to spelling mistake in debug messages of a structure field name Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Change the data type of the following variables from int to bool across all macintosh drivers: started slots_started pm121_started wf_smu_started Some of these issues were detected with the help of Coccinelle. Suggested-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
There is otherwise a risk of a possible null pointer dereference. Was largely found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
With pm81/pm91/pm121, when the overtemperature state is entered, and when it remains on after skipped ticks, the driver will try to leave it too soon (immediately on the next tick). This is because the active FAILURE_OVERTEMP state is not visible in "new_failure" variable of the current tick. Furthermore, the driver will keep trying to clear condition in subsequent ticks as FAILURE_OVERTEMP remains set in the "last_failure" variable. These will start to trigger WARNINGS from windfarm core: [ 100.082735] windfarm: Clamping CPU frequency to minimum ! [ 100.108132] windfarm: Overtemp condition detected ! [ 101.952908] windfarm: Overtemp condition cleared ! [...] [ 102.980388] WARNING: at drivers/macintosh/windfarm_core.c:463 [...] [ 103.982227] WARNING: at drivers/macintosh/windfarm_core.c:463 [...] [ 105.030494] WARNING: at drivers/macintosh/windfarm_core.c:463 [...] [ 105.973666] WARNING: at drivers/macintosh/windfarm_core.c:463 [...] [ 106.977913] WARNING: at drivers/macintosh/windfarm_core.c:463 Fix by adding a helper global variable. We leave the overtemp state only after all failure bits have been cleared. I saw this error on iMac G5 iSight (pm121). Also pm81/pm91 are fixed based on the observation that these are almost identical/copy-pasted code. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove all #inclusions of asm/system.h preparatory to splitting and killing it. Performed with the following command: perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *` Signed-off-by: David Howells <dhowells@redhat.com>