| From | Greg Kroah-Hartman <> | Subject | [ 064/123] xhci: Fix conditional check in bandwidth calculation. | Date | Wed, 9 Jan 2013 12:35:03 -0800 |
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3.7-stable review patch. If anyone has any objections, please let me know.
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From: Sarah Sharp <sarah.a.sharp@linux.intel.com>
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 <sarah.a.sharp@linux.intel.com> Reported-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/usb/host/xhci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -2254,7 +2254,7 @@ static bool xhci_is_async_ep(unsigned in 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)
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