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| author | Can Guo <can.guo@oss.qualcomm.com> | 2026-03-25 18:21:48 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2026-03-28 00:20:29 +0300 |
| commit | dc5dcac5327832bffc1971b1445553823bdebc08 (patch) | |
| tree | 0c5959a2b9155593548b3da45328fa86830fa038 /include | |
| parent | 10c40143f369a601cc54dd39777843e000b730a6 (diff) | |
| download | linux-dc5dcac5327832bffc1971b1445553823bdebc08.tar.xz | |
scsi: ufs: core: Add helpers to pause and resume command processing
In preparation for supporting TX Equalization refreshing, introduce helper
functions to safely pause and resume command processing.
ufshcd_pause_command_processing() ensures the host is in a quiescent state
by stopping the block layer tagset, acquiring the necessary locks
(scan_mutex and clk_scaling_lock), and waiting for any in-flight commands
to complete within a specified timeout.
ufshcd_resume_command_processing() restores the host to its previous
operational state by reversing these steps in the correct order.
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Can Guo <can.guo@oss.qualcomm.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Link: https://patch.msgid.link/20260325152154.1604082-7-can.guo@oss.qualcomm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include')
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