Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
powerpc: Use correct ccr bit for syscall error status
The powerpc implementations of syscall_get_error and
syscall_set_return_value should use CCR0:S0 (0x10000000) for testing
and setting syscall error status. Fortunately these APIs don't seem
to be used at the moment.
Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
authored by Nathan Lynch and committed by Benjamin Herrenschmidt 409d241b d6a8536a
+3
-3
arch/powerpc/include/asm/syscall.h
+3
-3
arch/powerpc/include/asm/syscall.h
···
30
static inline long syscall_get_error(struct task_struct *task,
31
struct pt_regs *regs)
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{
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-
return (regs->ccr & 0x1000) ? -regs->gpr[3] : 0;
34
}
35
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static inline long syscall_get_return_value(struct task_struct *task,
···
44
int error, long val)
45
{
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if (error) {
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-
regs->ccr |= 0x1000L;
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regs->gpr[3] = -error;
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} else {
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-
regs->ccr &= ~0x1000L;
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regs->gpr[3] = val;
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}
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}
···
30
static inline long syscall_get_error(struct task_struct *task,
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struct pt_regs *regs)
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{
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+
return (regs->ccr & 0x10000000) ? -regs->gpr[3] : 0;
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}
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static inline long syscall_get_return_value(struct task_struct *task,
···
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int error, long val)
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{
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if (error) {
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+
regs->ccr |= 0x10000000L;
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regs->gpr[3] = -error;
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} else {
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+
regs->ccr &= ~0x10000000L;
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regs->gpr[3] = val;
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}
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}