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authorTakashi Iwai <tiwai@suse.de>2012-05-21 12:45:18 +0200
committerTakashi Iwai <tiwai@suse.de>2012-05-21 12:45:18 +0200
commit775b2449bdba7c97dda9f274c92bf7a83dac4142 (patch)
treeb4bee45c13762ea93642b1e38c62de454e51cf5d /drivers/usb/core/urb.c
parent21363cf0ca5c9c62e34e37422fb1d13d70d3de3c (diff)
parent5fb86e5d4a951ddb0474cdfd809380c8e2a8d101 (diff)
downloadolio-linux-3.10-775b2449bdba7c97dda9f274c92bf7a83dac4142.tar.xz
olio-linux-3.10-775b2449bdba7c97dda9f274c92bf7a83dac4142.zip
Merge branch 'topic/asoc' into for-linus
Diffstat (limited to 'drivers/usb/core/urb.c')
-rw-r--r--drivers/usb/core/urb.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 7239a73c1b8..cd9b3a2cd8a 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -539,6 +539,10 @@ EXPORT_SYMBOL_GPL(usb_submit_urb);
* never submitted, or it was unlinked before, or the hardware is already
* finished with it), even if the completion handler has not yet run.
*
+ * The URB must not be deallocated while this routine is running. In
+ * particular, when a driver calls this routine, it must insure that the
+ * completion handler cannot deallocate the URB.
+ *
* Unlinking and Endpoint Queues:
*
* [The behaviors and guarantees described below do not apply to virtual
@@ -603,6 +607,10 @@ EXPORT_SYMBOL_GPL(usb_unlink_urb);
* with error -EPERM. Thus even if the URB's completion handler always
* tries to resubmit, it will not succeed and the URB will become idle.
*
+ * The URB must not be deallocated while this routine is running. In
+ * particular, when a driver calls this routine, it must insure that the
+ * completion handler cannot deallocate the URB.
+ *
* This routine may not be used in an interrupt context (such as a bottom
* half or a completion handler), or when holding a spinlock, or in other
* situations where the caller can't schedule().
@@ -640,6 +648,10 @@ EXPORT_SYMBOL_GPL(usb_kill_urb);
* with error -EPERM. Thus even if the URB's completion handler always
* tries to resubmit, it will not succeed and the URB will become idle.
*
+ * The URB must not be deallocated while this routine is running. In
+ * particular, when a driver calls this routine, it must insure that the
+ * completion handler cannot deallocate the URB.
+ *
* This routine may not be used in an interrupt context (such as a bottom
* half or a completion handler), or when holding a spinlock, or in other
* situations where the caller can't schedule().