From: Macpaul Lin Date: Thu, 5 Mar 2026 10:23:24 +0000 (+0800) Subject: scsi: Adjust SCSI inquiry command data length X-Git-Tag: v2026.07-rc1~53^2~10 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=041364141b7daef8318a4b8495cac8570002773f;p=thirdparty%2Fu-boot.git scsi: Adjust SCSI inquiry command data length Per the SCSI SPC-4 specification, the standard inquiry data length should not be less than 36 bytes. The current implementation uses 512 bytes, which causes detection failures on some UFS devices (e.g., Longsys) that do not expect a transfer length exceeding the standard inquiry size. Align the default standard inquiry length with the Linux kernel's implementation (see drivers/scsi/scsi_scan.c), which uses 36 bytes as the default. Devices requiring vendor-specific inquiry lengths should be handled through quirk settings in the future. Signed-off-by: ht.lin Signed-off-by: Macpaul Lin Reviewed-by: Marek Vasut --- diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 8fe6b38a8c7..116b696b08d 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -513,7 +513,7 @@ static int scsi_detect_dev(struct udevice *dev, int target, int lun, pccb->target = target; pccb->lun = lun; pccb->pdata = tempbuff; - pccb->datalen = 512; + pccb->datalen = 36; pccb->dma_dir = DMA_FROM_DEVICE; scsi_setup_inquiry(pccb); if (scsi_exec(dev, pccb)) {