diff options
| author | Jiri Slaby <jirislaby@gmail.com> | 2009-08-22 20:24:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-23 06:46:37 -0700 |
| commit | 2912282c06f219cf1634a624653c445329b37acf (patch) | |
| tree | 43e2550ad8f4c1ec75dbdfe407c802f2148db67c /drivers/usb/gadget/u_serial.c | |
| parent | a448c9d8c58ff7d3f8cc2a8f835065460099b22d (diff) | |
USB: make usb_buffer_map_sg consistent with doc
usb_buffer_map_sg should return negative on error according to
its documentation. But dma_map_sg returns 0 on error. Take this
into account and return -ENOMEM in such situation.
While at it, return -EINVAL instead of -1 when wrong input is
passed in.
If this wasn't done, usb_sg_* operations used after usb_sg_init
which returned 0 may cause oopses/deadlocks since we don't init
structures/entries, esp. completion and status entry.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/u_serial.c')
0 files changed, 0 insertions, 0 deletions