[36/53] USB: workaround for bug in old version of GCC

Greg KH
2011-11-23T00:44:11Z

From: Alan Stern <stern@rowland.harvard.edu>

commit 97ff22ee3b4cb3a334f7385e269773141aed702f upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/usb/host/pci-quirks.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -626,7 +626,7 @@ static void __devinit quirk_usb_disable_
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;
@@ -672,11 +672,10 @@ static void __devinit quirk_usb_disable_
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;