0b25773434
Consider following sequence of events: 1. UFS is runtime suspended, link_state = Hibern8, device_state = sleep 2. System goes into system suspend, ufshcd_system_suspend() brings both link and device to active state and then puts the device in Power_Down state and link in OFF state. 3. System resumes at some later point in time, ufshcd_system_resume() doesn't do anything as UFS state is runtime suspended. Note that link is still on OFF state and device is in Power_Down state. 4. Now system again goes into suspend without any UFS accesses before it. ufshcd_system_suspend() again brings both link and device to active state and then puts the device in Power_Down state and link if OFF state. But it's unnecessary to bring the link & device in active state as both link and device are already in desired low power states. This change fixes this issue by adding proper state checks in ufshcd_system_suspend(). Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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.. | ||
Kconfig | ||
Makefile | ||
tc-dwc-g210-pci.c | ||
tc-dwc-g210-pltfrm.c | ||
tc-dwc-g210.c | ||
tc-dwc-g210.h | ||
ufs_quirks.h | ||
ufs-qcom.c | ||
ufs-qcom.h | ||
ufs.h | ||
ufshcd-dwc.c | ||
ufshcd-dwc.h | ||
ufshcd-pci.c | ||
ufshcd-pltfrm.c | ||
ufshcd-pltfrm.h | ||
ufshcd.c | ||
ufshcd.h | ||
ufshci-dwc.h | ||
ufshci.h | ||
unipro.h |