- 04 May, 2022 32 commits
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Randy Dunlap authored
__setup() handlers should return 1 to obsolete_checksetup() in init/main.c to indicate that the boot option has been handled. A return of 0 causes the boot option/value to be listed as an Unknown kernel parameter and added to init's (limited) argument or environment strings. Also, error return codes don't mean anything to obsolete_checksetup() -- only non-zero (usually 1) or zero. So return 1 from powersave_off(). Fixes: 302eca18 ("[POWERPC] cell: use ppc_md->power_save instead of cbe_idle_loop") Reported-by:
Igor Zhbanov <izh1979@gmail.com> Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220502192925.19954-1-rdunlap@infradead.org
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Wang Qing authored
do_div() does a 64-by-32 division, the 2nd parameter is a u32. gbp->ipb_freq is already a u32, there's no need to transform it to u64 before passing it to do_div(). Signed-off-by:
Wang Qing <wangqing@vivo.com> Signed-off-by:
Christophe Leroy <christophe.leroy@csgroup.eu> [mpe: Add some detail to change log] Signed-off-by:
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Russell Currey authored
Signed-off-by:
Russell Currey <ruscur@russell.cc> Signed-off-by:
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Zou Wei authored
Use for_each_child_of_node() macro instead of open coding it. Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Zou Wei <zou_wei@huawei.com> Signed-off-by:
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Christophe Leroy authored
Make tlbcam_addrs[] static. Declare TLBCAM[] in mm/mmu_decl.h And use NULL instead of 0 as pointer when calling restore_to_as0(). Reported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
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YueHaibing authored
commit 2341964e ("powerpc/kuap: Remove __kuap_assert_locked()") left behind this one, remove it. Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Acked-by:
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YueHaibing authored
commit 441c19c8 ("powerpc/kvm/book3s_hv: Rework the secondary inhibit code") left behind this, so can remove it. Signed-off-by:
Daniel Axtens <dja@axtens.net> Signed-off-by:
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maqiang authored
These one line of code don't meet the kernel coding style, so remove the redundant space. Signed-off-by:
maqiang <maqianga@uniontech.com> Signed-off-by:
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Magali Lemes authored
When CONFIG_PPC64 is set and CONFIG_ALTIVEC is not the following build failures occur: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c: In function 'dc_fpu_begin': >> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:61:17: error: implicit declaration of function 'enable_kernel_altivec'; did you mean 'enable_kernel_vsx'? [-Werror=implicit-function-declaration] 61 | enable_kernel_altivec(); | ^~~~~~~~~~~~~~~~~~~~~ | enable_kernel_vsx drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c: In function 'dc_fpu_end': >> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:89:17: error: implicit declaration of function 'disable_kernel_altivec'; did you mean 'disable_kernel_vsx'? [-Werror=implicit-function-declaration] 89 | disable_kernel_altivec(); | ^~~~~~~~~~~~~~~~~~~~~~ | disable_kernel_vsx cc1: some warnings being treated as errors This commit adds stub instances of both enable_kernel_altivec() and disable_kernel_altivec() the same way as done in commit bd737588 regarding enable_kernel_vsx() and disable_kernel_vsx(). Reported-by:Magali Lemes <magalilemes00@gmail.com> Signed-off-by:
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Yang Li authored
Fix the following coccicheck warnings: ./drivers/macintosh/via-cuda.c:240:16-17: WARNING comparing pointer to 0 ./drivers/macintosh/via-cuda.c:243:16-17: WARNING comparing pointer to 0, suggest !E ./drivers/macintosh/via-cuda.c:521:23-24: WARNING comparing pointer to 0 Reported-by:
Abaci Robot <abaci@linux.alibaba.com> Signed-off-by:
Yang Li <yang.lee@linux.alibaba.com> Signed-off-by:
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Jiapeng Chong authored
Clean the following coccicheck warning: ./arch/powerpc/kernel/fadump.c:1291:34-35: WARNING opportunity for swap(). Reported-by:
Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by:
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Minghao Chi authored
Return the value from i2c_add_driver() directly instead of storing it in another redundant variable. Reported-by:
Zeal Robot <zealci@zte.com.cn> Signed-off-by:
Minghao Chi <chi.minghao@zte.com.cn> Signed-off-by:
CGEL ZTE <cgel.zte@gmail.com> Signed-off-by:
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Xiang wangx authored
Static variables do not need to be initialised to 0, because compiler will initialise all uninitialised statics to 0. Thus, remove the unneeded initializations. Signed-off-by:
Xiang wangx <wangxiang@cdjrlc.com> Signed-off-by:
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Yang Guang authored
Use the macro 'swap()' defined in 'include/linux/minmax.h' to avoid opencoding it. Reported-by:
Yang Guang <yang.guang5@zte.com.cn> Signed-off-by:
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Randy Dunlap authored
Fix typos of 'remaining' and 'those'. Signed-off-by:
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Qing Wang authored
show() must not use snprintf() when formatting the value to be returned to user space. Fix the following coccicheck warning: drivers/macintosh/ams/ams-core.c:53: WARNING: use scnprintf or sprintf. Use sysfs_emit instead of scnprintf or sprintf makes more sense. Signed-off-by:
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Sohaib Mohamed authored
Remove repeated words: "the the lowest" and "this this kernel" Signed-off-by:
Sohaib Mohamed <sohaib.amhmd@gmail.com> Acked-by:
Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by:
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Jing Yangyang authored
Fix the following coccicheck warning: ./drivers/macintosh/smu.c:1089: 11-12: WARNING comparing pointer to 0, suggest !E ./drivers/macintosh/smu.c:1256:11-12: WARNING comparing pointer to 0 Reported-by:
Jing Yangyang <jing.yangyang@zte.com.cn> Signed-off-by:
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Jason Wang authored
The strlcpy should not be used because it doesn't limit the source length. As linus says, it's a completely useless function if you can't implicitly trust the source string - but that is almost always why people think they should use it! All in all the BSD function will lead some potential bugs. But the strscpy doesn't require reading memory from the src string beyond the specified "count" bytes, and since the return value is easier to error-check than strlcpy()'s. In addition, the implementation is robust to the string changing out from underneath it, unlike the current strlcpy() implementation. Thus, We prefer using strscpy instead of strlcpy. Signed-off-by:
Jason Wang <wangborong@cdjrlc.com> Signed-off-by:
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Jason Wang authored
Replace the 'unsigned' with 'unsigned int' which is more accurate. Signed-off-by:
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Dwaipayan Ray authored
__FUNCTION__ exists only for backwards compatibility reasons with old gcc versions. Replace it with __func__. Signed-off-by:
Dwaipayan Ray <dwaipayanray1@gmail.com> Signed-off-by:
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Dwaipayan Ray authored
__FUNCTION__ exists only for backwards compatibility reasons with old gcc versions. Replace it with __func__. Signed-off-by:
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Colin Ian King authored
There is a spelling mistake in the Kconfig text. Fix it. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Chen Huang authored
The simple_strtoull() function is deprecated in some situation, since it does not check for the range overflow, use kstrtoull() instead. Signed-off-by:
Chen Huang <chenhuang5@huawei.com> Signed-off-by:
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Randy Dunlap authored
Fix some pr_debug() issues in mpc52xx_pci.c: - use __func__ to print function names - use "%pr" to print struct resource entries - use "%pa" to print a resource_size_t (phys_addr_t) The latter two fix several build warnings: ../arch/powerpc/platforms/52xx/mpc52xx_pci.c: In function 'mpc52xx_pci_setup': ../include/linux/kern_levels.h:5:18: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'resource_size_t' {aka 'long long unsigned int'} [-Wformat=] ../arch/powerpc/platforms/52xx/mpc52xx_pci.c:277:40: note: format string is defined here 277 | pr_debug("mem_resource[1] = {.start=%x, .end=%x, .flags=%lx}\n", | ~^ | | | unsigned int | %llx ../include/linux/kern_levels.h:5:18: warning: format '%x' expects argument of type 'unsigned int', but argument 3 has type 'resource_size_t' {aka 'long long unsigned int'} [-Wformat=] ../arch/powerpc/platforms/52xx/mpc52xx_pci.c:277:49: note: format string is defined here 277 | pr_debug("mem_resource[1] = {.start=%x, .end=%x, .flags=%lx}\n", | ~^ | | | unsigned int | %llx ../arch/powerpc/platforms/52xx/mpc52xx_pci.c:299:36: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 299 | (unsigned long long)res->flags, (void*)hose->io_base_phys); | ^ ../arch/powerpc/platforms/52xx/mpc52xx_pci.c:295:2: note: in expansion of macro 'pr_debug' 295 | pr_debug(".io_resource={.start=%llx,.end=%llx,.flags=%llx} " | ^~~~~~~~ The change to print mem_resource[0] is for consistency within this source file and to use the kernel API -- there were no warnings here. Signed-off-by: -
Ye Bin authored
spinlock can be initialized automatically with DEFINE_SPINLOCK() rather than explicitly calling spin_lock_init(). Reported-by:
Ye Bin <yebin10@huawei.com> Signed-off-by:
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Zucheng Zheng authored
sccdbg symbol is not used, so remove it Reported-by:
Zucheng Zheng <zhengzucheng@huawei.com> Signed-off-by:
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Yu Kuai authored
The sparse tool complains as follow: arch/powerpc/kernel/btext.c:48:5: warning: symbol 'boot_text_mapped' was not declared. Should it be static? This symbol is not used outside of btext.c, so this commit make it static. Signed-off-by:
Yu Kuai <yukuai3@huawei.com> Signed-off-by:
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Yu Kuai authored
Fixes gcc '-Wunused-but-set-variable' warning: arch/powerpc/kernel/btext.c:49:12: error: 'force_printk_to_btext' defined but not used. It is never used, and so can be removed. Signed-off-by:
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zuoqilin authored
Remove unneeded variable: "ret". Signed-off-by:
zuoqilin <zuoqilin@yulong.com> Signed-off-by:
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YueHaibing authored
commit 475028ef ("powerpc/eeh: Remove eeh_dev_phb_init_dynamic()") left behind this, so can remove it. Signed-off-by:
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He Ying authored
We found these warnings in arch/powerpc/kernel/time.c as follows: warning: symbol 'decrementer_max' was not declared. Should it be static? warning: symbol 'rtc_lock' was not declared. Should it be static? warning: symbol 'dtl_consumer' was not declared. Should it be static? Declare 'decrementer_max' in powerpc asm/time.h. Include linux/mc146818rtc.h in powerpc kernel/time.c where 'rtc_lock' is declared. And remove duplicated declaration of 'rtc_lock' in powerpc platforms/chrp/time.c because it has included linux/mc146818rtc.h. Move 'dtl_consumer' definition after "include <asm/dtl.h>" because it is declared there. Reported-by:
He Ying <heying24@huawei.com> Reviewed-by:
Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by:
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- 02 May, 2022 5 commits
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Yang Li authored
Fix the following coccinelle warnings: ./arch/powerpc/lib/sstep.c:1090:20-21: WARNING: sum of probable bitmasks, consider | ./arch/powerpc/lib/sstep.c:1115:20-21: WARNING: sum of probable bitmasks, consider | ./arch/powerpc/lib/sstep.c:1134:20-21: WARNING: sum of probable bitmasks, consider | Reported-by:
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Randy Dunlap authored
Fix missing export for a loadable module build: ERROR: modpost: "cpm_setbrg" [drivers/tty/serial/cpm_uart/cpm_uart.ko] undefined! Fixes: 1da177e4 ("Linux-2.6.12-rc") Signed-off-by:
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Wang Wensheng authored
Build kernel with `C=2`: arch/powerpc/perf/isa207-common.c:24:18: warning: symbol 'isa207_pmu_format_attr' was not declared. Should it be static? arch/powerpc/perf/power9-pmu.c:101:5: warning: symbol 'p9_dd21_bl_ev' was not declared. Should it be static? arch/powerpc/perf/power9-pmu.c:115:5: warning: symbol 'p9_dd22_bl_ev' was not declared. Should it be static? Those symbols are used only in the files that define them so we declare them as static to fix the warnings. Signed-off-by:
Wang Wensheng <wangwensheng4@huawei.com> Reviewed-by:
Athira Rajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by:
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Xu Wang authored
Remove unnecassary cast in the argument to kfree(). Signed-off-by:
Xu Wang <vulab@iscas.ac.cn> Signed-off-by:
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Fuqian Huang authored
kmemdup is introduced to duplicate a region of memory in a neat way. Rather than kmalloc/kzalloc + memcpy, which the programmer needs to write the size twice (sometimes lead to mistakes), kmemdup improves readability, leads to smaller code and also reduce the chances of mistakes. Suggestion to use kmemdup rather than using kmalloc/kzalloc + memcpy. Signed-off-by:
Fuqian Huang <huangfq.daxian@gmail.com> [chleroy: Fixed parenthesis alignment] Signed-off-by:
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- 29 Apr, 2022 1 commit
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Michael Ellerman authored
Add a test for a bug we had in the 4PB address space SLB handling. It was fixed in commit 4c2de74c ("powerpc/64: Interrupts save PPR on stack rather than thread_struct"). Signed-off-by:
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- 27 Apr, 2022 2 commits
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Michael Ellerman authored
In smp_85xx_start_cpu() we are passed an address but we're unsure if it's a real or virtual address, so there's a check to determine that. The check has an off-by-one in that it tests if the address is greater than high_memory, but high_memory is the first address of high memory, so the check should be greater-or-equal. It seems this has never been a problem in practice, but it also triggers the DEBUG_VIRTUAL checks in __pa() which we would like to avoid. We can fix both issues by converting high_memory - 1 to a physical address and testing against that. Signed-off-by:
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Alistair Popple authored
Adds a simple test of some basic matrix multiply assist (MMA) instructions. Signed-off-by:
Alistair Popple <alistair@popple.id.au> Tested-by:
Joel Stanley <joel@jms.id.au> Signed-off-by:
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