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authorSarah Sharp <sarah.a.sharp@linux.intel.com>2012-05-21 19:44:33 +0400
committerSarah Sharp <sarah.a.sharp@linux.intel.com>2012-05-21 20:00:43 +0400
commitc88db160a30cccb81303212b256680f2e37e35ae (patch)
treeb9e0f3f8884fccf8c4793aa43ef3ba428defcfa7
parentb01bcbf7aeba5e87cf51147c654b1be8686ba643 (diff)
downloadlinux-c88db160a30cccb81303212b256680f2e37e35ae.tar.xz
xhci: Fix DIV_ROUND_UP compile error.
Fengguang reports that the xHCI driver isn't linked properly on his machine: ERROR: "__udivdi3" [drivers/usb/host/xhci-hcd.ko] undefined! ERROR: "handle_edge_irq" [drivers/gpio/gpio-pch.ko] undefined! ERROR: "irq_to_desc" [drivers/gpio/gpio-pch.ko] undefined! The driver compiles fine on my 64-bit box (gcc version 4.6.1). Fengguang thinks it's because the xHCI driver was using DIV_ROUND_UP() instead of DIV_ROUND_UP_ULL() with arguments that were unsigned long long variables. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Reported-by: Wu Fengguang <wfg@linux.intel.com>
-rw-r--r--drivers/usb/host/xhci.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index ad9ef056d368..afdc73ee84a6 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -3956,7 +3956,7 @@ static u16 xhci_calculate_intel_u1_timeout(struct usb_device *udev,
/* Otherwise the calculation is the same as isoc eps */
case USB_ENDPOINT_XFER_ISOC:
timeout_ns = xhci_service_interval_to_ns(desc);
- timeout_ns = DIV_ROUND_UP(timeout_ns * 105, 100);
+ timeout_ns = DIV_ROUND_UP_ULL(timeout_ns * 105, 100);
if (timeout_ns < udev->u1_params.sel * 2)
timeout_ns = udev->u1_params.sel * 2;
break;
@@ -3965,7 +3965,7 @@ static u16 xhci_calculate_intel_u1_timeout(struct usb_device *udev,
}
/* The U1 timeout is encoded in 1us intervals. */
- timeout_ns = DIV_ROUND_UP(timeout_ns, 1000);
+ timeout_ns = DIV_ROUND_UP_ULL(timeout_ns, 1000);
/* Don't return a timeout of zero, because that's USB3_LPM_DISABLED. */
if (timeout_ns == USB3_LPM_DISABLED)
timeout_ns++;
@@ -4004,7 +4004,7 @@ static u16 xhci_calculate_intel_u2_timeout(struct usb_device *udev,
timeout_ns = u2_del_ns;
/* The U2 timeout is encoded in 256us intervals */
- timeout_ns = DIV_ROUND_UP(timeout_ns, 256 * 1000);
+ timeout_ns = DIV_ROUND_UP_ULL(timeout_ns, 256 * 1000);
/* If the necessary timeout value is bigger than what we can set in the
* USB 3.0 hub, we have to disable hub-initiated U2.
*/