From d33ac60beaf2c7dee5cd90aba7c1eb385dd70937 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Tue, 12 Oct 2010 00:00:25 +0200 Subject: PM: Add sysfs attr for rechecking dev hash from PM trace If the device which fails to resume is part of a loadable kernel module it won't be checked at startup against the magic number stored in the RTC. Add a read-only sysfs attribute /sys/power/pm_trace_dev_match which contains a list of newline separated devices (usually just the one) which currently match the last magic number. This allows the device which is failing to resume to be found after the modules are loaded again. Signed-off-by: James Hogan Signed-off-by: Rafael J. Wysocki --- include/linux/resume-trace.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/resume-trace.h') diff --git a/include/linux/resume-trace.h b/include/linux/resume-trace.h index bc8c3881c729..f31db2368782 100644 --- a/include/linux/resume-trace.h +++ b/include/linux/resume-trace.h @@ -3,6 +3,7 @@ #ifdef CONFIG_PM_TRACE #include +#include extern int pm_trace_enabled; @@ -14,6 +15,7 @@ static inline int pm_trace_is_enabled(void) struct device; extern void set_trace_device(struct device *); extern void generate_resume_trace(const void *tracedata, unsigned int user); +extern int show_trace_dev_match(char *buf, size_t size); #define TRACE_DEVICE(dev) do { \ if (pm_trace_enabled) \ -- cgit v1.2.3