USB: workaround for bug in old version of GCC

This patch (as1491) works around a bug in GCC-3.4.6, which is still
supposed to be supported.  The number of microseconds in the udelay()
call in quirk_usb_disable_ehci() is fixed at 100, but the compiler
doesn't understand this and generates a link-time error.  So we
replace the otherwise unused variable "delta" with a simple constant
100.  This same pattern is already used in other delay loops in that
source file.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Konrad Rzepecki <krzepecki@dentonet.pl>
Tested-by: Konrad Rzepecki <krzepecki@dentonet.pl>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index 27a3dec32fa2..c7fd6ce11904 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -627,7 +627,7 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
         void __iomem *base, *op_reg_base;
         u32     hcc_params, cap, val;
         u8      offset, cap_length;
-        int     wait_time, delta, count = 256/4;
+        int     wait_time, count = 256/4;
 
         if (!mmio_resource_enabled(pdev, 0))
                 return;
@@ -673,11 +673,10 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
                 writel(val, op_reg_base + EHCI_USBCMD);
 
                 wait_time = 2000;
-                delta = 100;
                 do {
                         writel(0x3f, op_reg_base + EHCI_USBSTS);
-                        udelay(delta);
-                        wait_time -= delta;
+                        udelay(100);
+                        wait_time -= 100;
                         val = readl(op_reg_base + EHCI_USBSTS);
                         if ((val == ~(u32)0) || (val & EHCI_USBSTS_HALTED)) {
                                 break;