diff options
| author | Mark Brown <[email protected]> | 2016-02-09 18:20:39 +0000 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2016-02-09 18:20:39 +0000 |
| commit | fcdcc79628a1919bde9acf239e364f65bab6327c (patch) | |
| tree | 5499be387cf3028c90ac083b1cf866ebed7bf7e0 /drivers/usb/host/pci-quirks.c | |
| parent | 7a8d44bc89e5cddcd5c0704a11a90484d36ba6ba (diff) | |
| parent | a0a90718f18264dc904d34a580f332006f5561e9 (diff) | |
Merge branch 'topic/acpi' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-pxa2xx
Diffstat (limited to 'drivers/usb/host/pci-quirks.c')
| -rw-r--r-- | drivers/usb/host/pci-quirks.c | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index f9400564cb72..26cb8c861e6e 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -984,24 +984,17 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev) * Find the Legacy Support Capability register - * this is optional for xHCI host controllers. */ - ext_cap_offset = xhci_find_next_cap_offset(base, XHCI_HCC_PARAMS_OFFSET); - do { - if ((ext_cap_offset + sizeof(val)) > len) { - /* We're reading garbage from the controller */ - dev_warn(&pdev->dev, - "xHCI controller failing to respond"); - return; - } + ext_cap_offset = xhci_find_next_ext_cap(base, 0, XHCI_EXT_CAPS_LEGACY); - if (!ext_cap_offset) - /* We've reached the end of the extended capabilities */ - goto hc_init; + if (!ext_cap_offset) + goto hc_init; - val = readl(base + ext_cap_offset); - if (XHCI_EXT_CAPS_ID(val) == XHCI_EXT_CAPS_LEGACY) - break; - ext_cap_offset = xhci_find_next_cap_offset(base, ext_cap_offset); - } while (1); + if ((ext_cap_offset + sizeof(val)) > len) { + /* We're reading garbage from the controller */ + dev_warn(&pdev->dev, "xHCI controller failing to respond"); + return; + } + val = readl(base + ext_cap_offset); /* If the BIOS owns the HC, signal that the OS wants it, and wait */ if (val & XHCI_HC_BIOS_OWNED) { |