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disable the watchdog if the bootloader left it enabled

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SVN-Revision: 15920
This commit is contained in:
Gabor Juhos 2009-05-18 20:56:56 +00:00
parent 5d9d9837ac
commit 5bad9df354
1 changed files with 24 additions and 0 deletions
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24
target/linux/gemini/patches/004-gemini-disable-watchdog-in-probe.patch Normal file
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@ -0,0 +1,24 @@
--- a/drivers/watchdog/gemini_wdt.c
+++ b/drivers/watchdog/gemini_wdt.c
@@ -224,6 +224,7 @@ static int __init gemini_wdt_probe(struc
struct resource *res;
void __iomem *base;
struct gemini_wdt_struct *gemini_wdt;
+ unsigned int reg;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
@@ -267,6 +268,13 @@ static int __init gemini_wdt_probe(struc
gemini_wdt_miscdev.parent = &pdev->dev;
+ reg = __raw_readw(gemini_wdt->base + GEMINI_WDCR);
+ if (reg & WDCR_ENABLE) {
+ /* Watchdog was enabled by the bootloader, disable it. */
+ reg &= ~(WDCR_ENABLE);
+ __raw_writel(reg, gemini_wdt->base + GEMINI_WDCR);
+ }
+
ret = misc_register(&gemini_wdt_miscdev);
if (ret)
goto fail2;