This patch sets scsi_host->max_id as 1 if the device's quirk
flag of US_FL_SCM_MULT_TARG isn't set, because there are only 6
mass storage devices marked as mutiple targets from unusual_devs.h.
This patch is a small optimization about scanning targets, and
avoid scanning other 7 non-existed targets for single target
device.
Signed-off-by: Ming Lei <ming....@canonical.com>
---
drivers/usb/storage/usb.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 31b3e1a..07b3e54 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -976,6 +976,9 @@ int usb_stor_probe2(struct us_data *us)
if (us->fflags & US_FL_SINGLE_LUN)
us->max_lun = 0;
+ if (!(us->fflags & US_FL_SCM_MULT_TARG))
+ us_to_host(us)->max_id = 1;
+
/* Find the endpoints and calculate pipe values */
result = get_pipes(us);
if (result)
--
1.7.9.5
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