The UFS SCSI device LUNs are observed to return failure the first time a unit ready inquiry is sent and pass on the second try. Send this inquiry 3 times to make sure device is ready.
Signed-off-by: Faiz Abbas faiz_abbas@ti.com --- drivers/scsi/scsi.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index fd1b4b776d..7b7d388557 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -478,6 +478,7 @@ static int scsi_detect_dev(struct udevice *dev, int target, int lun, lbaint_t capacity; unsigned long blksz; struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb; + int count, err;
pccb->target = target; pccb->lun = lun; @@ -513,9 +514,14 @@ static int scsi_detect_dev(struct udevice *dev, int target, int lun, dev_desc->target = pccb->target; dev_desc->lun = pccb->lun;
- pccb->datalen = 0; - scsi_setup_test_unit_ready(pccb); - if (scsi_exec(dev, pccb)) { + for (count = 0; count < 3; count++) { + pccb->datalen = 0; + scsi_setup_test_unit_ready(pccb); + err = scsi_exec(dev, pccb); + if (!err) + break; + } + if (err) { if (dev_desc->removable) { dev_desc->type = perq; goto removable;