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| author | Vincent Palomares <paillon@google.com> | 2021-07-27 18:27:43 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-07-30 23:48:36 -0400 |
| commit | 1084514ca9aa5b3fcc485b378b92b632918237f4 (patch) | |
| tree | 18cbf70bfcdff927500dd6fec8adabf7ab493fb6 | |
| parent | 7740b615b6665e47f162e261d805f1bbbac15876 (diff) | |
| download | linux-1084514ca9aa5b3fcc485b378b92b632918237f4.tar.gz linux-1084514ca9aa5b3fcc485b378b92b632918237f4.tar.bz2 linux-1084514ca9aa5b3fcc485b378b92b632918237f4.zip | |
scsi: ufs: Allow async suspend/resume callbacks
Allow UFS suspend/resume callbacks to run in parallel with other
suspend/resume callbacks. This can recoup dozens of milliseconds on the
resume path if UFS hardware needs to be powered back on.
Suspending and resuming asynchronously is safe to do so long as the driver
callbacks only depend on resources made available by either a) parent
devices or b) devices explicitly marked as suppliers with device_link_add.
Link: https://lore.kernel.org/r/20210728012743.1063928-1-paillon@google.com
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Stanley Chu <stanley.chu@mediatek.com>
Cc: Can Guo <cang@codeaurora.org>
Cc: Asutosh Das <asutoshd@codeaurora.org>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Vincent Palomares <paillon@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 064a44e628d6..05495c34a2b7 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -9626,6 +9626,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) async_schedule(ufshcd_async_scan, hba); ufs_sysfs_add_nodes(hba->dev); + device_enable_async_suspend(dev); return 0; free_tmf_queue: |