From: Hans de Goede <hdegoede@redhat.com>
Date: Sat, 13 Sep 2014 10:26:35 +0000 (+0200)
Subject: uas: Free data urbs on completion
X-Git-Tag: v3.18-rc1~131^2~77
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=85fea82554ee74f0a2e17729a3911865df5fbba0;p=platform%2Fkernel%2Flinux-exynos.git

uas: Free data urbs on completion

Now that we no longer drop our lock to unlink the data urbs, we can simply
free them on completion, making their handling consistent with the other urbs.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index e92c676..b2d96fd 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -288,8 +288,6 @@ static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller)
 		return -EBUSY;
 	WARN_ON_ONCE(cmdinfo->state & COMMAND_COMPLETED);
 	cmdinfo->state |= COMMAND_COMPLETED;
-	usb_free_urb(cmdinfo->data_in_urb);
-	usb_free_urb(cmdinfo->data_out_urb);
 	if (cmdinfo->state & COMMAND_ABORTED)
 		scmd_printk(KERN_INFO, cmnd, "abort completed\n");
 	list_del(&cmdinfo->list);
@@ -418,9 +416,11 @@ static void uas_data_cmplt(struct urb *urb)
 	if (cmdinfo->data_in_urb == urb) {
 		sdb = scsi_in(cmnd);
 		cmdinfo->state &= ~DATA_IN_URB_INFLIGHT;
+		cmdinfo->data_in_urb = NULL;
 	} else if (cmdinfo->data_out_urb == urb) {
 		sdb = scsi_out(cmnd);
 		cmdinfo->state &= ~DATA_OUT_URB_INFLIGHT;
+		cmdinfo->data_out_urb = NULL;
 	}
 	if (sdb == NULL) {
 		WARN_ON_ONCE(1);
@@ -450,6 +450,7 @@ static void uas_data_cmplt(struct urb *urb)
 	}
 	uas_try_complete(cmnd, __func__);
 out:
+	usb_free_urb(urb);
 	spin_unlock_irqrestore(&devinfo->lock, flags);
 }