[SCSI] Increase default timeout for INQUIRY
This patch (as1224) changes the default timeout for INQUIRY commands
from 3 seconds to 20 seconds, which is the value used by Windows for
USB Mass-Storage devices. Some of these devices, like the Corsair
Flash Voyager (see Bugzilla #12188) really do need a long timeout.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index e2b50d8..c447838 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -115,12 +115,12 @@
"REPORT LUNS maximum number of LUNS received (should be"
" between 1 and 16384)");
-static unsigned int scsi_inq_timeout = SCSI_TIMEOUT/HZ+3;
+static unsigned int scsi_inq_timeout = SCSI_TIMEOUT/HZ + 18;
module_param_named(inq_timeout, scsi_inq_timeout, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(inq_timeout,
"Timeout (in seconds) waiting for devices to answer INQUIRY."
- " Default is 5. Some non-compliant devices need more.");
+ " Default is 20. Some devices may need more; most need less.");
/* This lock protects only this list */
static DEFINE_SPINLOCK(async_scan_lock);