From: Xiaotian Feng Date: Thu, 10 Dec 2009 11:56:45 +0000 (+0800) Subject: ACPI: don't cond_resched if irq is disabled X-Git-Tag: firefly_0821_release~9833^2~3319^2~7^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c084ca704a3661bf77690a05bc6bd2c305d87c34;p=firefly-linux-kernel-4.4.55.git ACPI: don't cond_resched if irq is disabled commit 8bd108d adds preemption point after each opcode parse, then a sleeping function called from invalid context bug was founded during suspend/resume stage. this was fixed in commit abe1dfa by don't cond_resched when irq_disabled. But recent commit 138d156 changes the behaviour to don't cond_resched when in_atomic. This makes the sleeping function called from invalid context bug happen again, which is reported in http://lkml.org/lkml/2009/12/1/371. This patch also fixes http://bugzilla.kernel.org/show_bug.cgi?id=14483 Reported-and-bisected-by: Larry Finger Reported-and-bisected-by: Justin P. Mattock Signed-off-by: Xiaotian Feng Acked-by: Alexey Starikovskiy Signed-off-by: Len Brown --- diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h index 9d7febde10a1..09469971472f 100644 --- a/include/acpi/platform/aclinux.h +++ b/include/acpi/platform/aclinux.h @@ -152,7 +152,7 @@ static inline void *acpi_os_acquire_object(acpi_cache_t * cache) #include #define ACPI_PREEMPTION_POINT() \ do { \ - if (!in_atomic_preempt_off()) \ + if (!in_atomic_preempt_off() && !irqs_disabled()) \ cond_resched(); \ } while (0)