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| author | Vincent Palatin <vpalatin@chromium.org> | 2013-05-10 19:48:59 -0700 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2013-06-12 22:22:50 +0200 |
| commit | 5da2dc9789abecb1b018beb0c93f4c38c2985bc6 (patch) | |
| tree | 565dca5d5edcef646827fdfde5ae33806a16ab7e /common/usb_kbd.c | |
| parent | 09defbc75b46991b794f35957e986acbfe0c7946 (diff) | |
| download | u-boot-imx-5da2dc9789abecb1b018beb0c93f4c38c2985bc6.zip u-boot-imx-5da2dc9789abecb1b018beb0c93f4c38c2985bc6.tar.gz u-boot-imx-5da2dc9789abecb1b018beb0c93f4c38c2985bc6.tar.bz2 | |
usb: workaround non-working keyboards.
If the USB keyboard is not answering properly the first request on its
interrupt endpoint, just skip it and try the next one.
This workarounds an issue with a wireless mouse dongle which presents
itself both as a keyboard and a mouse but has a non-functional keyboard
interface.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
(cherry picked from commit 012bbf0ce0301be2482857e3f03b481dd15c2340)
Rebased to upstream/master:
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'common/usb_kbd.c')
| -rw-r--r-- | common/usb_kbd.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/common/usb_kbd.c b/common/usb_kbd.c index 188763d..3174b5e 100644 --- a/common/usb_kbd.c +++ b/common/usb_kbd.c @@ -461,8 +461,13 @@ static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum) usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0); debug("USB KBD: enable interrupt pipe...\n"); - usb_submit_int_msg(dev, pipe, data->new, maxp > 8 ? 8 : maxp, - ep->bInterval); + if (usb_submit_int_msg(dev, pipe, data->new, maxp > 8 ? 8 : maxp, + ep->bInterval) < 0) { + printf("Failed to get keyboard state from device %04x:%04x\n", + dev->descriptor.idVendor, dev->descriptor.idProduct); + /* Abort, we don't want to use that non-functional keyboard. */ + return 0; + } /* Success. */ return 1; |