diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2012-11-30 11:54:40 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-11 12:14:17 -0800 |
| commit | aa8f612370edf2fd29ec137f7070b11d98df539b (patch) | |
| tree | e6aca35aa23745c65936533665b78a380f49fde2 /drivers/usb/storage | |
| parent | 6a099c63650e50ebf7d1259b859a3d230aec4207 (diff) | |
| download | talos-obmc-linux-aa8f612370edf2fd29ec137f7070b11d98df539b.tar.gz talos-obmc-linux-aa8f612370edf2fd29ec137f7070b11d98df539b.zip | |
uas: new function to cancel data urbs
Add uas_unlink_data_urbs function to cancel in-flight data urbs.
Moves existing code into a separate function.
[ v2: also drop the locking, just call usb_unlink_urb no matter what,
which is safe because the usb core guarantees the completion
callback is called only once ]
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/storage')
| -rw-r--r-- | drivers/usb/storage/uas.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 98b98eef7527..8b58e5e8e86d 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -87,6 +87,15 @@ static DECLARE_WORK(uas_work, uas_do_work); static DEFINE_SPINLOCK(uas_work_lock); static LIST_HEAD(uas_work_list); +static void uas_unlink_data_urbs(struct uas_dev_info *devinfo, + struct uas_cmd_info *cmdinfo) +{ + if (cmdinfo->data_in_urb) + usb_unlink_urb(cmdinfo->data_in_urb); + if (cmdinfo->data_out_urb) + usb_unlink_urb(cmdinfo->data_out_urb); +} + static void uas_do_work(struct work_struct *work) { struct uas_cmd_info *cmdinfo; @@ -274,16 +283,9 @@ static void uas_stat_cmplt(struct urb *urb) uas_sense(urb, cmnd); if (cmnd->result != 0) { /* cancel data transfers on error */ - if (cmdinfo->state & DATA_IN_URB_INFLIGHT) { - spin_unlock_irqrestore(&devinfo->lock, flags); - usb_unlink_urb(cmdinfo->data_in_urb); - spin_lock_irqsave(&devinfo->lock, flags); - } - if (cmdinfo->state & DATA_OUT_URB_INFLIGHT) { - spin_unlock_irqrestore(&devinfo->lock, flags); - usb_unlink_urb(cmdinfo->data_out_urb); - spin_lock_irqsave(&devinfo->lock, flags); - } + spin_unlock_irqrestore(&devinfo->lock, flags); + uas_unlink_data_urbs(devinfo, cmdinfo); + spin_lock_irqsave(&devinfo->lock, flags); } cmdinfo->state &= ~COMMAND_INFLIGHT; uas_try_complete(cmnd, __func__); |
