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xhci: remove BUG() in xhci_get_endpoint_type() 

If the endpoint type is unknown, set it to 0 and fail gracefully
instead of causing a kernel panic.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This commit is contained in:
Mathias Nyman 2013-04-24 17:24:58 +03:00 committed by Sarah Sharp
parent bd18fd5c21
commit 17d6555437
1 changed files with 9 additions and 5 deletions
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14
drivers/usb/host/xhci-mem.c
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@ -1329,7 +1329,7 @@ static u32 xhci_get_endpoint_type(struct usb_device *udev,
else
type = EP_TYPE(INT_OUT_EP);
} else {
BUG();
type = 0;
}
return type;
}
@ -1375,10 +1375,16 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
unsigned int max_burst;
enum xhci_ring_type type;
u32 max_esit_payload;
u32 endpoint_type;
ep_index = xhci_get_endpoint_index(&ep->desc);
ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);
endpoint_type = xhci_get_endpoint_type(udev, ep);
if (!endpoint_type)
return -EINVAL;
ep_ctx->ep_info2 = cpu_to_le32(endpoint_type);
type = usb_endpoint_type(&ep->desc);
/* Set up the endpoint ring */
virt_dev->eps[ep_index].new_ring =
@ -1407,11 +1413,9 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
* CErr shall be set to 0 for Isoch endpoints.
*/
if (!usb_endpoint_xfer_isoc(&ep->desc))
ep_ctx->ep_info2 = cpu_to_le32(ERROR_COUNT(3));
ep_ctx->ep_info2 |= cpu_to_le32(ERROR_COUNT(3));
else
ep_ctx->ep_info2 = cpu_to_le32(ERROR_COUNT(0));
ep_ctx->ep_info2 |= cpu_to_le32(xhci_get_endpoint_type(udev, ep));
ep_ctx->ep_info2 |= cpu_to_le32(ERROR_COUNT(0));
/* Set the max packet size and max burst */
max_packet = GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc));