diff options
| author | Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> | 2012-12-14 10:38:02 -0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-01-03 03:33:48 +0000 |
| commit | 9e6cb78608694a9095be1d731a9a2a5832a4c919 (patch) | |
| tree | 9fed48f172781cf1544d1fb38257efd1e30661ed /drivers | |
| parent | 1bb6f0ef0b5934ebc87fa9054574b7ea758222e4 (diff) | |
USB: cdc-wdm: fix regression on buffer deallocation
[ no commit upstream, since usb_alloc_coherent usage was removed from
the driver before this was fixed ]
Commit cafbe85 ("USB: cdc-wdm: better allocate a buffer that is at least
as big as we tell the USB core") introduced a regression: it changed
the size used in usb_alloc_coherent, but failed to do the same for the
usb_free_coherent calls.
It also was marked for stable and got backported to older kernels. But
in the upstream kernel, the usage of usb_alloc_coherent was right after
removed from the driver, so upstream doesn't have this problem, while
the stable kernels still have, and thus need this fix.
BugLink: https://bugs.launchpad.net/bugs/1074157
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/class/cdc-wdm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 9aaed0d70a41..97b2c55efdb7 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -301,7 +301,7 @@ static void cleanup(struct wdm_device *desc) desc->sbuf, desc->validity->transfer_dma); usb_free_coherent(interface_to_usbdev(desc->intf), - desc->bMaxPacketSize0, + desc->wMaxCommand, desc->inbuf, desc->response->transfer_dma); kfree(desc->orq); @@ -788,7 +788,7 @@ out: err3: usb_set_intfdata(intf, NULL); usb_free_coherent(interface_to_usbdev(desc->intf), - desc->bMaxPacketSize0, + desc->wMaxCommand, desc->inbuf, desc->response->transfer_dma); err2: |