From: Sarah Sharp Date: Tue, 23 Apr 2013 22:49:47 +0000 (-0700) Subject: xhci: Remove BUG_ON() in xhci_alloc_container_ctx. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=29f9d54b63a6186f1bed3fc15eeab7f98947eebd;p=linux-beck.git xhci: Remove BUG_ON() in xhci_alloc_container_ctx. It's horrible coding style to panic the kernel when someone passes you an argument value you didn't expect. In the future, we may want to add additional context types, so it's better to gracefully handle additional context types instead of panicking. Signed-off-by: Sarah Sharp Cc: John Youn --- diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 8c0e119efa4e..cc1b3efd5d76 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -358,11 +358,15 @@ int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring, static struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, int type, gfp_t flags) { - struct xhci_container_ctx *ctx = kzalloc(sizeof(*ctx), flags); + struct xhci_container_ctx *ctx; + + if ((type != XHCI_CTX_TYPE_DEVICE) && (type != XHCI_CTX_TYPE_INPUT)) + return NULL; + + ctx = kzalloc(sizeof(*ctx), flags); if (!ctx) return NULL; - BUG_ON((type != XHCI_CTX_TYPE_DEVICE) && (type != XHCI_CTX_TYPE_INPUT)); ctx->type = type; ctx->size = HCC_64BYTE_CONTEXT(xhci->hcc_params) ? 2048 : 1024; if (type == XHCI_CTX_TYPE_INPUT)