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microblaze: evict the check for kernel_mode(regs) from do_notify_resume()

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Only one caller hasn't done it in assembler - work_pending on !MMU.
Everything else can't reach do_notify_resume() if we are returning
to kernel mode, so move that check to that sole caller and make
do_notify_resume() reachable only when returning to userland.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-04-29 03:35:29 -04:00
parent 4a9d32d377
commit c886a9fc1f
2 changed files with 3 additions and 9 deletions
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9
arch/microblaze/kernel/signal.c
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@@ -343,15 +343,6 @@ static void do_signal(struct pt_regs *regs, int in_syscall)
asmlinkage void do_notify_resume(struct pt_regs *regs, int in_syscall)
{
/*
* We want the common case to go fast, which
* is why we may in certain cases get here from
* kernel mode. Just return without doing anything
* if so.
*/
if (kernel_mode(regs))
return;
if (test_thread_flag(TIF_SIGPENDING))
do_signal(regs, in_syscall);