linux/drivers/ufs
Vamshi Gajjela ab9fd06cb8 scsi: ufs: core: Fix hba->last_dme_cmd_tstamp timestamp updating logic
The ufshcd_add_delay_before_dme_cmd() always introduces a delay of
MIN_DELAY_BEFORE_DME_CMDS_US between DME commands even when it's not
required. The delay is added when the UFS host controller supplies the
quirk UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS.

Fix the logic to update hba->last_dme_cmd_tstamp to ensure subsequent DME
commands have the correct delay in the range of 0 to
MIN_DELAY_BEFORE_DME_CMDS_US.

Update the timestamp at the end of the function to ensure it captures the
latest time after any necessary delay has been applied.

Signed-off-by: Vamshi Gajjela <vamshigajjela@google.com>
Link: https://lore.kernel.org/r/20240724135126.1786126-1-vamshigajjela@google.com
Fixes: cad2e03d86 ("ufs: add support to allow non standard behaviours (quirks)")
Cc: stable@vger.kernel.org
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-08-01 21:59:00 -04:00
..
core scsi: ufs: core: Fix hba->last_dme_cmd_tstamp timestamp updating logic 2024-08-01 21:59:00 -04:00
host scsi: ufs: exynos: Don't resume FMP when crypto support is disabled 2024-07-22 20:52:15 -04:00
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