[ARM] pxa: stop doing our own rtc management over suspend (2aca0a86) · Commits · 戴 / test

Remove the RTC management over a suspend/resume cycle. Firstly, we may not be using the internal RTC for time keeping; some platforms have an external RTC for this inspite of the PXA having an internal RTC. Secondly, the RTC library code handles updating system time on resume. Signed-off-by:

Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/pm.c

+0 −10

Original line number	Diff line number	Diff line
		@@ -77,7 +77,6 @@ int pxa_pm_enter(suspend_state_t state)
		{
		unsigned long sleep_save[SLEEP_SAVE_SIZE];
		unsigned long checksum = 0;
		struct timespec delta, rtc;
		int i;
		extern void pxa_cpu_pm_enter(suspend_state_t state);

		@@ -87,11 +86,6 @@ int pxa_pm_enter(suspend_state_t state)
		iwmmxt_task_disable(NULL);
		#endif

		/* preserve current time */
		rtc.tv_sec = RCNR;
		rtc.tv_nsec = 0;
		save_time_delta(&delta, &rtc);

		SAVE(GPLR0); SAVE(GPLR1); SAVE(GPLR2);
		SAVE(GPDR0); SAVE(GPDR1); SAVE(GPDR2);
		SAVE(GRER0); SAVE(GRER1); SAVE(GRER2);
		@@ -183,10 +177,6 @@ int pxa_pm_enter(suspend_state_t state)

		RESTORE(PSTR);

		/* restore current time */
		rtc.tv_sec = RCNR;
		restore_time_delta(&delta, &rtc);

		#ifdef DEBUG
		printk(KERN_DEBUG "*** made it back from resume\n");
		#endif

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