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| author | Andreas Larsson <andreas@gaisler.com> | 2014-03-27 16:15:58 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-04-21 14:07:27 -0500 |
| commit | b38d27e5527c33a2a1f5bb3aee39b755e57dea86 (patch) | |
| tree | 0b7fed4b0390b1f576a2d14ac037f2370ec2e0d7 | |
| parent | 5bddbd72c6c02498aba8b48527c86d1398dba3f4 (diff) | |
| download | blackbird-obmc-linux-b38d27e5527c33a2a1f5bb3aee39b755e57dea86.tar.gz blackbird-obmc-linux-b38d27e5527c33a2a1f5bb3aee39b755e57dea86.zip | |
usb: gadget: gr_udc: Return error code when trying to set ep.maxpacket > ep.maxpacket_limit
Make gr_ep_enable fail properly when a call requests a larger ep.maxpacket than
ep.maxpacket_limit.
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
| -rw-r--r-- | drivers/usb/gadget/gr_udc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/gadget/gr_udc.c b/drivers/usb/gadget/gr_udc.c index 253e608b57f9..72458be7763a 100644 --- a/drivers/usb/gadget/gr_udc.c +++ b/drivers/usb/gadget/gr_udc.c @@ -1542,6 +1542,10 @@ static int gr_ep_enable(struct usb_ep *_ep, } else if (max == 0) { dev_err(dev->dev, "Max payload cannot be set to 0\n"); return -EINVAL; + } else if (max > ep->ep.maxpacket_limit) { + dev_err(dev->dev, "Requested max payload %d > limit %d\n", + max, ep->ep.maxpacket_limit); + return -EINVAL; } spin_lock(&ep->dev->lock); |
