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24e2e7a19f
UFS runtime suspend can be triggered after pm_runtime_enable() is invoked
in ufshcd_pltfrm_init(). However if the first runtime suspend is triggered
before binding ufs_hba structure to ufs device structure via
platform_set_drvdata(), then UFS runtime suspend will be no longer
triggered in the future because its dev->power.runtime_error was set in the
first triggering and does not have any chance to be cleared.
To be more clear, dev->power.runtime_error is set if hba is NULL in
ufshcd_runtime_suspend() which returns -EINVAL to rpm_callback() where
dev->power.runtime_error is set as -EINVAL. In this case, any future
rpm_suspend() for UFS device fails because rpm_check_suspend_allowed()
fails due to non-zero
dev->power.runtime_error.
To resolve this issue, make sure the first UFS runtime suspend get valid
"hba" in ufshcd_runtime_suspend(): Enable UFS runtime PM only after hba is
successfully bound to UFS device structure.
Fixes:
|
||
|---|---|---|
| .. | ||
| cdns-pltfrm.c | ||
| Kconfig | ||
| Makefile | ||
| tc-dwc-g210-pci.c | ||
| tc-dwc-g210-pltfrm.c | ||
| tc-dwc-g210.c | ||
| tc-dwc-g210.h | ||
| ufs_bsg.c | ||
| ufs_bsg.h | ||
| ufs_quirks.h | ||
| ufs-hisi.c | ||
| ufs-hisi.h | ||
| ufs-mediatek.c | ||
| ufs-mediatek.h | ||
| ufs-qcom.c | ||
| ufs-qcom.h | ||
| ufs-sysfs.c | ||
| ufs-sysfs.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 | ||