This is a note to let you know that I've just added the patch titled
scsi: ufs: core: Honor runtime/system PM levels if set by host controller drivers
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-ufs-core-honor-runtime-system-pm-levels-if-set-.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 287882129f683b861014f3213e7608bbf9d5930f
Author: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Date: Thu Dec 19 22:20:42 2024 +0530
scsi: ufs: core: Honor runtime/system PM levels if set by host controller drivers
[ Upstream commit bb9850704c043e48c86cc9df90ee102e8a338229 ]
Otherwise, the default levels will override the levels set by the host
controller drivers.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20241219-ufs-qcom-suspend-fix-v3-2-63c4b95a70b9@xxxxxxxxxx
Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 02696c7f9beff..0ac0b6aaf9c62 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -10483,14 +10483,17 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
}
/*
- * Set the default power management level for runtime and system PM.
+ * Set the default power management level for runtime and system PM if
+ * not set by the host controller drivers.
* Default power saving mode is to keep UFS link in Hibern8 state
* and UFS device in sleep state.
*/
- hba->rpm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
+ if (!hba->rpm_lvl)
+ hba->rpm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
UFS_SLEEP_PWR_MODE,
UIC_LINK_HIBERN8_STATE);
- hba->spm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
+ if (!hba->spm_lvl)
+ hba->spm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
UFS_SLEEP_PWR_MODE,
UIC_LINK_HIBERN8_STATE);
