From 3f605c4b4424a7042bd3ba656af10e3a405d5663 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 25 Oct 2012 13:44:12 -0700 Subject: [PATCH] xhci: Fix conditional check in bandwidth calculation. commit 392a07ae3316f2b90b39ce41e66d6f6b5c95de90 upstream. David reports that at drivers/usb/host/xhci.c:2257: static bool xhci_is_sync_in_ep(unsigned int ep_type) { return (ep_type == ISOC_IN_EP || ep_type != INT_IN_EP); } The static analyser cppcheck says [linux-3.7-rc2/drivers/usb/host/xhci.c:2257]: (style) Redundant condition: If ep_type == 5, the comparison ep_type != 7 is always true. Maybe the original programmer intention was something like static bool xhci_is_sync_in_ep(unsigned int ep_type) { return (ep_type == ISOC_IN_EP || ep_type == INT_IN_EP); } Fix this. This patch should be backported to stable kernels as old as 3.2, that contain the commit 2b69899934c63b7b9432568584fb4c4a2924f40c "xhci: USB 3.0 BW checking." Signed-off-by: Sarah Sharp Reported-by: David Binderman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index c9e419f29b74..f37366799fa8 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -2254,7 +2254,7 @@ static bool xhci_is_async_ep(unsigned int ep_type) static bool xhci_is_sync_in_ep(unsigned int ep_type) { - return (ep_type == ISOC_IN_EP || ep_type != INT_IN_EP); + return (ep_type == ISOC_IN_EP || ep_type == INT_IN_EP); } static unsigned int xhci_get_ss_bw_consumed(struct xhci_bw_info *ep_bw) -- 2.39.5