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BTAOjHLHO3rEA22K2t7K6iu/JTtvQx0kwAQIUjN90TAKoch2rDuyOLrm8gE97RtwdnWqE1YMrf8 sMQ2at/BDoMFrqlSQHi0YKJKUwDqLHCTuS3K0Nyz97disGdBcBzEksrI6etdn8oDCfrHH9k7pJj Z0jVdb90F/WrouOcVIpknZyNGHmKVUizWsoFCBkYiUXm8bOZ7rHltbvP/J2d1ypNJEGTo6q1Foo /F/YuucFDqSi6lgdjN9294RCey0ZiuBCAa+nUcxOhGceKLPAPOenrI6FZzZKASKudkgTTxVYbkA u3x4KZuv09LVft+AR3CKTQuzuGCnnQ== X-Authority-Analysis: v=2.4 cv=TvPrRTXh c=1 sm=1 tr=0 ts=69379088 cx=c_pps a=OOZaFjgC48PWsiFpTAqLcw==:117 a=OOZaFjgC48PWsiFpTAqLcw==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=wP3pNCr1ah4A:10 a=GoEa3M9JfhUA:10 a=VkNPw1HP01LnGYTKEx00:22 a=sMDEUU3oSzSlzYwmmHIA:9 a=UzISIztuOb4A:10 a=ZXulRonScM0A:10 X-Proofpoint-GUID: rkJtPmpxt3VDjvZE2TNn7UOYQEH0gN_M Bart, > Commit 08b12cda6c44 ("scsi: ufs: core: Switch to > scsi_get_internal_cmd()") accidentally introduced a deadlock in the > frequency scaling code. ufshcd_clock_scaling_unprepare() may submit a > device management command while SCSI command processing is blocked. > The deadlock was introduced by using the SCSI core for submitting > device management commands (scsi_get_internal_cmd() + > blk_execute_rq()). Fix this deadlock by calling > blk_mq_unquiesce_tagset() before any device management commands are > submitted by ufshcd_clock_scaling_unprepare(). Applied to 6.19/scsi-staging, thanks! -- Martin K. Petersen