scsi: ufshcd: Fix possible unclocked register access

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Vendor specific setup_clocks callback may require the clocks managed by
ufshcd driver to be ON. So if the vendor specific setup_clocks callback
is called while the required clocks are turned off, it could result into
unclocked register access.

To prevent possible unclock register access, this change adds one more
argument to setup_clocks callback to let it know whether it is called
pre/post the clock changes by core driver.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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This commit is contained in:

Subhash Jadavani 2016-10-06 21:48:22 -07:00 • committed by Martin K. Petersen

parent fd37f66eb6

commit 1e879e8fa9

3 changed files with 19 additions and 16 deletions

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10

drivers/scsi/ufs/ufs-qcom.c

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17

drivers/scsi/ufs/ufshcd.c

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8

drivers/scsi/ufs/ufshcd.h

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