scsi: ufs: verify hba controller hce reg value
Sometimes due to hw issues it takes some time to the host controller register to update. In order to verify the register has updated, a polling is done until its value is set. In addition the functions ufshcd_hba_stop() and ufshcd_wait_for_register() was updated with an additional input parameter, indicating the timeout between reads will be done by sleeping or spinning the cpu. Reviewed-by: NHannes Reinecke <hare@suse.com> Signed-off-by: NRaviv Shvili <rshvili@codeaurora.org> Signed-off-by: NYaniv Gardi <ygardi@codeaurora.org> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
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