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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-05-21 15:15:24 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-05-21 15:15:24 +0100 |
| commit | 4175160b065e74572819a320dcd34129224a4e1c (patch) | |
| tree | 3298e2c9a7c7db33bf28617875e5429e17eec61c /arch/arm/kernel/traps.c | |
| parent | ddf90a2ff2c4a9da99acc898a4afeab3e4251fcd (diff) | |
| parent | 0ec8e7aa8f63f0cacd545fcd7f40f93fde2c0e6e (diff) | |
| download | blackbird-op-linux-4175160b065e74572819a320dcd34129224a4e1c.tar.gz blackbird-op-linux-4175160b065e74572819a320dcd34129224a4e1c.zip | |
Merge branch 'misc' into for-linus
Conflicts:
arch/arm/kernel/ptrace.c
Diffstat (limited to 'arch/arm/kernel/traps.c')
| -rw-r--r-- | arch/arm/kernel/traps.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index 778454750a6c..3647170e9a16 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -479,14 +479,14 @@ static int bad_syscall(int n, struct pt_regs *regs) return regs->ARM_r0; } -static inline void +static inline int do_cache_op(unsigned long start, unsigned long end, int flags) { struct mm_struct *mm = current->active_mm; struct vm_area_struct *vma; if (end < start || flags) - return; + return -EINVAL; down_read(&mm->mmap_sem); vma = find_vma(mm, start); @@ -496,9 +496,11 @@ do_cache_op(unsigned long start, unsigned long end, int flags) if (end > vma->vm_end) end = vma->vm_end; - flush_cache_user_range(vma, start, end); + up_read(&mm->mmap_sem); + return flush_cache_user_range(start, end); } up_read(&mm->mmap_sem); + return -EINVAL; } /* @@ -544,8 +546,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs) * the specified region). */ case NR(cacheflush): - do_cache_op(regs->ARM_r0, regs->ARM_r1, regs->ARM_r2); - return 0; + return do_cache_op(regs->ARM_r0, regs->ARM_r1, regs->ARM_r2); case NR(usr26): if (!(elf_hwcap & HWCAP_26BIT)) |
