Re: [RESEND PATCH v3] scsi: ufshcd: fix possible unclocked register access

From: Martin K. Petersen
Date: Tue Oct 11 2016 - 17:55:28 EST

>>>>> "Subhash" == Subhash Jadavani <subhashj@xxxxxxxxxxxxxx> writes:

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

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

Applied to 4.10/scsi-queue.

Martin K. Petersen Oracle Linux Engineering