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scsi: ufs: core: Simplify power management during async scan 

ufshcd_init() calls pm_runtime_get_sync() before it calls
async_schedule(). ufshcd_async_scan() calls pm_runtime_put_sync() directly
or indirectly from ufshcd_add_lus(). Simplify ufshcd_async_scan() by always
calling pm_runtime_put_sync() from ufshcd_async_scan().

Cc: <stable@vger.kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20231218225229.2542156-2-bvanassche@acm.org
Reviewed-by: Can Guo <quic_cang@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2023-12-18 14:52:14 -08:00 committed by Martin K. Petersen
parent 45a2c87f28
commit daf7795406
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/ufs/core/ufshcd.c
View File

@ -8711,7 +8711,6 @@ static int ufshcd_add_lus(struct ufs_hba *hba)
ufs_bsg_probe(hba);
scsi_scan_host(hba->host);
pm_runtime_put_sync(hba->dev);
out:
return ret;
@ -8980,15 +8979,15 @@ static void ufshcd_async_scan(void *data, async_cookie_t cookie)
/* Probe and add UFS logical units */
ret = ufshcd_add_lus(hba);
out:
pm_runtime_put_sync(hba->dev);
/*
* If we failed to initialize the device or the device is not
* present, turn off the power/clocks etc.
*/
if (ret) {
pm_runtime_put_sync(hba->dev);
if (ret)
ufshcd_hba_exit(hba);
}
}
static enum scsi_timeout_action ufshcd_eh_timed_out(struct scsi_cmnd *scmd)