diff options
| author | Ilya Yanok <ilya.yanok@cogentembedded.com> | 2012-07-15 04:43:50 +0000 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2012-07-18 14:43:42 +0200 |
| commit | 80ab414afdc9543686d8258dd7b933a410df3c4e (patch) | |
| tree | 8118f0f5f6563c28f82617333e5ed2c6b9bb3c5f /common/usb.c | |
| parent | 189a6956ebbd7820afe5fa45a64ca495e6cefd9c (diff) | |
usb: pass cache-aligned buffer to usb_get_descriptor()
usb_get_descriptor passes it's buffer argument directly to
usb_control_msg() so it has to be properly aligned/padded.
Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
Diffstat (limited to 'common/usb.c')
| -rw-r--r-- | common/usb.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/common/usb.c b/common/usb.c index c80155ce76..46f4741690 100644 --- a/common/usb.c +++ b/common/usb.c @@ -799,12 +799,13 @@ int usb_new_device(struct usb_device *dev) dev->epmaxpacketin[0] = 8; dev->epmaxpacketout[0] = 8; - err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, 8); + err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, tmpbuf, 8); if (err < 8) { printf("\n USB device not responding, " \ "giving up (status=%lX)\n", dev->status); return 1; } + memcpy(&dev->descriptor, tmpbuf, 8); #else /* This is a Windows scheme of initialization sequence, with double * reset of the device (Linux uses the same sequence) @@ -893,7 +894,7 @@ int usb_new_device(struct usb_device *dev) tmp = sizeof(dev->descriptor); err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, - &dev->descriptor, sizeof(dev->descriptor)); + tmpbuf, sizeof(dev->descriptor)); if (err < tmp) { if (err < 0) printf("unable to get device descriptor (error=%d)\n", @@ -903,6 +904,7 @@ int usb_new_device(struct usb_device *dev) "(expected %i, got %i)\n", tmp, err); return 1; } + memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor)); /* correct le values */ le16_to_cpus(&dev->descriptor.bcdUSB); le16_to_cpus(&dev->descriptor.idVendor); |