From: Aswin Murugan <[email protected]> Enable the Force Unit Access (FUA) bit in SCSI WRITE10 commands to ensure writes bypass the device's volatile cache and go directly to non-volatile storage. This provides write-through behavior that prevents data loss during board resets.
Signed-off-by: Aswin Murugan <[email protected]> --- Changes in v2: - Reverted "scsi: sync cache on write" commit and then set the FUA bit drivers/scsi/scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 2e99f68cc5a..153b4841add 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -107,7 +107,7 @@ static void scsi_setup_write_ext(struct scsi_cmd *pccb, lbaint_t start, lbaint_t blocks) { pccb->cmd[0] = SCSI_WRITE10; - pccb->cmd[1] = 0; + pccb->cmd[1] = 0x08; /* Set FUA bit to bypass write cache */ pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff; pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff; pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff; -- 2.34.1
