diff options
| author | Ming Lei <ming.lei@canonical.com> | 2013-01-19 19:30:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-20 16:12:53 -0800 |
| commit | f4cc1834bdc47d0574ceffb728f256f67e1190ef (patch) | |
| tree | 2fcc53dcb64fbc5990a846b68a5744d6be6eb010 /drivers/usb/storage | |
| parent | fde26380315d7d57816efc143b7924c82dba764d (diff) | |
USB: storage: avoid scanning other targets for single target device
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.lei@canonical.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/storage')
| -rw-r--r-- | drivers/usb/storage/usb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 31b3e1a61bbd..07b3e5406f48 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) |