ANDROID: scsi: ufs: Allow prepare_command to return error code
Allow variant function "prepare_command" to return error code. This is useful for vendors to halt or retry command execution if needed. Signed-off-by:Stanley Chu <Stanley.Chu@mediatek.com> Bug: 172874931 Change-Id: Ibe327ab39b83644a1c5a29d821f01c08eb7ea6f1 Signed-off-by:
Stanley Chu <stanley.chu@mediatek.com>
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