diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2007-07-06 14:24:27 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-12 16:34:43 -0700 |
| commit | 8dfe4b14869fd185ca25ee88b02ada58a3005eaf (patch) | |
| tree | 0c0c8812f1d038706bd82ff0d7b3570d67645e68 /drivers/usb/storage/scsiglue.c | |
| parent | b0e2a705bffbfb70d9bed8b5f9094901f28d9563 (diff) | |
| download | linux-8dfe4b14869fd185ca25ee88b02ada58a3005eaf.tar.gz | |
usb-storage: implement autosuspend
This patch (as930) implements autosuspend for usb-storage. It is
adapted from a patch by Oliver Neukum. Autosuspend is allowed except
during LUN scanning, resets, and command execution.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/storage/scsiglue.c')
| -rw-r--r-- | drivers/usb/storage/scsiglue.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 1ba19eaa197097..47e56079925dfb 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -285,10 +285,15 @@ static int device_reset(struct scsi_cmnd *srb) US_DEBUGP("%s called\n", __FUNCTION__); - /* lock the device pointers and do the reset */ - mutex_lock(&(us->dev_mutex)); - result = us->transport_reset(us); - mutex_unlock(&us->dev_mutex); + result = usb_autopm_get_interface(us->pusb_intf); + if (result == 0) { + + /* lock the device pointers and do the reset */ + mutex_lock(&(us->dev_mutex)); + result = us->transport_reset(us); + mutex_unlock(&us->dev_mutex); + usb_autopm_put_interface(us->pusb_intf); + } return result < 0 ? FAILED : SUCCESS; } |