diff options
Diffstat (limited to 'drivers/usb/core/message.c')
| -rw-r--r-- | drivers/usb/core/message.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 31fb204f44c6..30a0690f3683 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -59,7 +59,7 @@ static int usb_start_wait_urb(struct urb *urb, int timeout, int *actual_length) retval = (ctx.status == -ENOENT ? -ETIMEDOUT : ctx.status); dev_dbg(&urb->dev->dev, - "%s timed out on ep%d%s len=%d/%d\n", + "%s timed out on ep%d%s len=%u/%u\n", current->comm, usb_endpoint_num(&urb->ep->desc), usb_urb_dir_in(urb) ? "in" : "out", @@ -653,7 +653,7 @@ int usb_get_descriptor(struct usb_device *dev, unsigned char type, if (result <= 0 && result != -ETIMEDOUT) continue; if (result > 1 && ((u8 *)buf)[1] != type) { - result = -EPROTO; + result = -ENODATA; continue; } break; @@ -696,8 +696,13 @@ static int usb_get_string(struct usb_device *dev, unsigned short langid, USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, (USB_DT_STRING << 8) + index, langid, buf, size, USB_CTRL_GET_TIMEOUT); - if (!(result == 0 || result == -EPIPE)) - break; + if (result == 0 || result == -EPIPE) + continue; + if (result > 1 && ((u8 *) buf)[1] != USB_DT_STRING) { + result = -ENODATA; + continue; + } + break; } return result; } @@ -799,18 +804,16 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size) dev_err(&dev->dev, "string descriptor 0 read error: %d\n", err); - goto errout; } else if (err < 4) { dev_err(&dev->dev, "string descriptor 0 too short\n"); - err = -EINVAL; - goto errout; } else { - dev->have_langid = 1; dev->string_langid = tbuf[2] | (tbuf[3] << 8); /* always use the first langid listed */ dev_dbg(&dev->dev, "default language 0x%04x\n", dev->string_langid); } + + dev->have_langid = 1; } err = usb_string_sub(dev, dev->string_langid, index, tbuf); @@ -1714,7 +1717,8 @@ free_interfaces: } kfree(new_interfaces); - if (cp->string == NULL) + if (cp->string == NULL && + !(dev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS)) cp->string = usb_cache_string(dev, cp->desc.iConfiguration); /* Now that all the interfaces are set up, register them |