diff options
| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2013-04-24 14:24:58 (GMT) |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2013-06-14 20:53:23 (GMT) |
| commit | 17d655543716791ebf8bb396b674fe95c07e55e4 (patch) | |
| tree | aa5696acf99be46a253cd3ac9859ac8c37f2fd1c /drivers/usb | |
| parent | bd18fd5c21b2e60d9b79a9d2ce8f38a672f560a6 (diff) | |
| download | linux-17d655543716791ebf8bb396b674fe95c07e55e4.tar.xz | |
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>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 6072f11..b0d789e 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -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)); |