From: Andreas Larsson <andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
To: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>,
Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
software-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org
Subject: [PATCH 6/6] usb: gadget: gr_udc: Return error code when trying to set ep.maxpacket > ep.maxpacket_limit
Date: Thu, 9 Jan 2014 11:54:18 +0100 [thread overview]
Message-ID: <1389264858-32664-7-git-send-email-andreas@gaisler.com> (raw)
In-Reply-To: <1389264858-32664-1-git-send-email-andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
Make gr_ep_enable fail properly when a call requests a larger ep.maxpacket than
ep.maxpacket_limit.
Signed-off-by: Andreas Larsson <andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
---
drivers/usb/gadget/gr_udc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/gadget/gr_udc.c b/drivers/usb/gadget/gr_udc.c
index 55757fc..5423391 100644
--- a/drivers/usb/gadget/gr_udc.c
+++ b/drivers/usb/gadget/gr_udc.c
@@ -1548,6 +1548,10 @@ 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);
--
1.7.10.4
--
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prev parent reply other threads:[~2014-01-09 10:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-09 10:54 [PATCH 0/6] usb: gadget: gr_udc: OF and ep.maxpacket_limit related improvements Andreas Larsson
2014-01-09 10:54 ` [PATCH 2/6] usb: gadget: gr_udc: Expand devicetree documentation Andreas Larsson
2014-01-09 10:54 ` [PATCH 4/6] usb: gadget: gr_udc: Use of_property_read_u32_index to access arrays Andreas Larsson
2014-01-09 10:54 ` [PATCH 5/6] usb: gadget: gr_udc: Add ep.maxpacket_limit to debugfs information Andreas Larsson
[not found] ` <1389264858-32664-1-git-send-email-andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
2014-01-09 10:54 ` [PATCH 1/6] usb: gadget: gr_udc: Make struct platform_device variable name clearer Andreas Larsson
2014-02-18 15:52 ` Felipe Balbi
[not found] ` <20140218155253.GC9878-HgARHv6XitL9zxVx7UNMDg@public.gmane.org>
2014-02-24 7:40 ` Andreas Larsson
[not found] ` <530AF761.2020107-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
2014-02-25 18:08 ` Felipe Balbi
2014-01-09 10:54 ` [PATCH 3/6] usb: gadget: gr_udc: Use platform_get_irq instead of irq_of_parse_and_map Andreas Larsson
2014-01-09 10:54 ` Andreas Larsson [this message]
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