evie/android_kernel_oneplus_msm8998
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Merge "scsi: ufs: disable ah8 during suspend and enable it on resume"

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Linux Build Service Account 2016-08-17 20:28:40 -07:00 • committed by Gerrit - the friendly Code Review server
commit 53b57a765f
1 changed files with 18 additions and 0 deletions
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18
drivers/scsi/ufs/ufshcd.c
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@ -7984,6 +7984,13 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
hba->clk_gating.is_suspended = true;
hba->hibern8_on_idle.is_suspended = true;
/*
* Disable auto hibern8 to prevent unnecessary hibern8 enter/exit
* during suspend path
*/
if (ufshcd_is_auto_hibern8_supported(hba))
ufshcd_set_auto_hibern8_timer(hba, 0);
if (hba->clk_scaling.is_allowed) {
cancel_work_sync(&hba->clk_scaling.suspend_work);
cancel_work_sync(&hba->clk_scaling.resume_work);
@ -8091,6 +8098,10 @@ enable_gating:
ufshcd_resume_clkscaling(hba);
hba->hibern8_on_idle.is_suspended = false;
hba->clk_gating.is_suspended = false;
/* Re-enable auto hibern8 in case of suspend failure */
if (ufshcd_is_auto_hibern8_supported(hba))
ufshcd_set_auto_hibern8_timer(hba,
hba->hibern8_on_idle.delay_ms);
ufshcd_release_all(hba);
out:
hba->pm_op_in_progress = 0;
@ -8184,6 +8195,13 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
if (hba->clk_scaling.is_allowed)
ufshcd_resume_clkscaling(hba);
/*
* Enable auto hibern8 after successful resume to prevent
* unnecessary hibern8 enter/exit during resume path
*/
if (ufshcd_is_auto_hibern8_supported(hba))
ufshcd_set_auto_hibern8_timer(hba,
hba->hibern8_on_idle.delay_ms);
/* Schedule clock gating in case of no access to UFS device yet */
ufshcd_release_all(hba);
goto out;