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arm64: Enable interrupts before calling do_notify_resume() 

task_work_run() implementation had the side effect of enabling
interrupts. With commit ac3d0da8 (task_work: Make task_work_add()
lockless), interrupts are no longer enabled revealing the bug in the
arch code. This patch enables the interrupt explicitly before calling
do_notify_resume().

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
hifive-unleashed-5.1
Catalin Marinas 2012-10-08 18:04:21 +01:00
parent e048d004a5
commit 6916fd086f
1 changed files with 1 additions and 0 deletions
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arch/arm64/kernel/entry.S
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@ -583,6 +583,7 @@ work_pending:
mov x0, sp // 'regs'
tst x2, #PSR_MODE_MASK // user mode regs?
b.ne no_work_pending // returning to kernel
enable_irq // enable interrupts for do_notify_resume()
bl do_notify_resume
b ret_to_user
work_resched: