Messages in this thread |  | | Subject | Re: [RESEND PATCH] scsi: ufs: fix race between clock gating and devfreq scaling work | From | "Martin K. Petersen" <> | Date | Fri, 14 Oct 2016 16:47:39 -0400 |
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>>>>> "Subhash" == Subhash Jadavani <subhashj@codeaurora.org> writes:
Subhash> UFS devfreq clock scaling work may require clocks to be ON if Subhash> it need to execute some UFS commands hence it may request for Subhash> clock hold before issuing the command. But if UFS clock gating Subhash> work is already running in parallel, ungate work would end up Subhash> waiting for the clock gating work to finish and as clock gating Subhash> work would also wait for the clock scaling work to finish, we Subhash> would enter in deadlock state. Here is the call trace during Subhash> this deadlock state:
Somebody from the UFS camp, please review!
-- Martin K. Petersen Oracle Linux Engineering
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