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usb/xhci: ignore xhci version while checking for the link quirk 

instead of reading the xhci interface version each time _even_ if the
quirk is not required, simply check if the quirk flag is set. This flag
is only set of the module parameter is set and here is where I moved the
version check to.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Sebastian Andrzej Siewior 2011-09-13 16:41:10 -07:00 committed by Greg Kroah-Hartman
parent 45e1892e70
commit d782659924
2 changed files with 2 additions and 4 deletions
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2
drivers/usb/host/xhci.c
View File

@ -316,7 +316,7 @@ int xhci_init(struct usb_hcd *hcd)
xhci_dbg(xhci, "xhci_init\n");
spin_lock_init(&xhci->lock);
if (link_quirk) {
if (xhci->hci_version == 0x95 && link_quirk) {
xhci_dbg(xhci, "QUIRK: Not clearing Link TRB chain bits.\n");
xhci->quirks |= XHCI_LINK_TRB_QUIRK;
} else {

4
drivers/usb/host/xhci.h
View File

@ -1526,9 +1526,7 @@ static inline void xhci_write_64(struct xhci_hcd *xhci,
static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
{
u32 temp = xhci_readl(xhci, &xhci->cap_regs->hc_capbase);
return ((HC_VERSION(temp) == 0x95) &&
(xhci->quirks & XHCI_LINK_TRB_QUIRK));
return xhci->quirks & XHCI_LINK_TRB_QUIRK;
}
/* xHCI debugging */