Kiwoong Kim d32533d30e scsi: ufs: core: Poll HCS.UCRDY before issuing a UIC command ... With auto hibern8 enabled, UIC could be busy processing a hibern8 operation and the HCI would reports UIC not ready for a short while through HCS.UCRDY. The UFS driver doesn't currently handle this situation. The UFSHCI spec specifies UCRDY like this: whether the host controller is ready to process UIC COMMAND The 'ready' could be seen as many different meanings. If the meaning includes not processing any request from HCI, processing a hibern8 operation can be 'not ready'. In this situation, the driver needs to wait until the operations is completed. Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com> Link: https://lore.kernel.org/r/550484ffb66300bdcec63d3e304dfd55cb432f1f.1693790060.git.kwmad.kim@samsung.com Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Chanwoo Lee <cw9316.lee@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>		2023-09-05 06:10:24 -04:00
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core	scsi: ufs: core: Poll HCS.UCRDY before issuing a UIC command	2023-09-05 06:10:24 -04:00
host	Merge branch '6.5/scsi-fixes' into 6.6/scsi-staging	2023-08-30 20:56:24 -04:00
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