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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-15 13:00:09 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-29 04:22:12 +0200 |
| commit | e448e1e774dc0ca307c17e961daf7ede2e635c57 (patch) | |
| tree | e1ba93cb1ba81a5e4fa7a939e2bff49eba30cf29 /arch/powerpc/math-emu | |
| parent | powerpc/mm/book3s64: Fix a typo in mmu_context.c (diff) | |
| download | linux-e448e1e774dc0ca307c17e961daf7ede2e635c57.tar.xz linux-e448e1e774dc0ca307c17e961daf7ede2e635c57.zip | |
powerpc/math: Fix missing __user qualifier for get_user() and other sparse warnings
Sparse reports the following problems:
arch/powerpc/math-emu/math.c:228:21: warning: Using plain integer as NULL pointer
arch/powerpc/math-emu/math.c:228:31: warning: Using plain integer as NULL pointer
arch/powerpc/math-emu/math.c:228:41: warning: Using plain integer as NULL pointer
arch/powerpc/math-emu/math.c:228:51: warning: Using plain integer as NULL pointer
arch/powerpc/math-emu/math.c:237:13: warning: incorrect type in initializer (different address spaces)
arch/powerpc/math-emu/math.c:237:13: expected unsigned int [noderef] __user *_gu_addr
arch/powerpc/math-emu/math.c:237:13: got unsigned int [usertype] *
arch/powerpc/math-emu/math.c:226:1: warning: symbol 'do_mathemu' was not declared. Should it be static?
Add missing __user qualifier when casting pointer used in get_user()
Use NULL instead of 0 to initialise opX local variables.
Add a prototype for do_mathemu() (Added in processor.h like sparc)
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/e4d1aae7604d89c98a52dfd8ce8443462e595670.1615809591.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/math-emu')
| -rw-r--r-- | arch/powerpc/math-emu/math.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/math-emu/math.c b/arch/powerpc/math-emu/math.c index 30b4b69c6941..327165f26ca6 100644 --- a/arch/powerpc/math-emu/math.c +++ b/arch/powerpc/math-emu/math.c @@ -225,7 +225,7 @@ record_exception(struct pt_regs *regs, int eflag) int do_mathemu(struct pt_regs *regs) { - void *op0 = 0, *op1 = 0, *op2 = 0, *op3 = 0; + void *op0 = NULL, *op1 = NULL, *op2 = NULL, *op3 = NULL; unsigned long pc = regs->nip; signed short sdisp; u32 insn = 0; @@ -234,7 +234,7 @@ do_mathemu(struct pt_regs *regs) int type = 0; int eflag, trap; - if (get_user(insn, (u32 *)pc)) + if (get_user(insn, (u32 __user *)pc)) return -EFAULT; switch (insn >> 26) { |