diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index 75b69847918e3a35c3a2832188ca0cb87dc6c9cb..033c2846ce5923e05f0805bff889ab45268ea056 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -234,7 +234,7 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
 	 */
 	hcc_params = readl(base + EHCI_HCC_PARAMS);
 	offset = (hcc_params >> 8) & 0xff;
-	while (offset && count--) {
+	while (offset && --count) {
 		u32		cap;
 		int		msec;