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| author | Dave Airlie <airlied@redhat.com> | 2020-07-24 01:28:09 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2020-07-24 01:48:05 +0300 |
| commit | 41206a073ceebc517245677a19f52ba6379b33a9 (patch) | |
| tree | 2fc35aac6abe32b99058ad55b0fc6e4d449d1056 /arch/arm64/include/asm/syscall.h | |
| parent | 206739119508d5ab4b42ab480ff61a7e6cd72d7c (diff) | |
| parent | ba47d845d715a010f7b51f6f89bae32845e6acb7 (diff) | |
| download | linux-41206a073ceebc517245677a19f52ba6379b33a9.tar.xz | |
Merge v5.8-rc6 into drm-next
I've got a silent conflict + two trees based on fixes to merge.
Fixes a silent merge with amdgpu
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'arch/arm64/include/asm/syscall.h')
| -rw-r--r-- | arch/arm64/include/asm/syscall.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/syscall.h b/arch/arm64/include/asm/syscall.h index 65299a2dcf9c..cfc0672013f6 100644 --- a/arch/arm64/include/asm/syscall.h +++ b/arch/arm64/include/asm/syscall.h @@ -34,6 +34,10 @@ static inline long syscall_get_error(struct task_struct *task, struct pt_regs *regs) { unsigned long error = regs->regs[0]; + + if (is_compat_thread(task_thread_info(task))) + error = sign_extend64(error, 31); + return IS_ERR_VALUE(error) ? error : 0; } @@ -47,7 +51,13 @@ static inline void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, int error, long val) { - regs->regs[0] = (long) error ? error : val; + if (error) + val = error; + + if (is_compat_thread(task_thread_info(task))) + val = lower_32_bits(val); + + regs->regs[0] = val; } #define SYSCALL_MAX_ARGS 6 |