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| author | Florian Fainelli <florian@openwrt.org> | 2009-08-04 21:05:55 +0000 |
|---|---|---|
| committer | Florian Fainelli <florian@openwrt.org> | 2009-08-04 21:05:55 +0000 |
| commit | cbe91ce7403638af393a6ff5b174b947d9bd5daf (patch) | |
| tree | e2a1c9835434d862712d9ea9acf035a2182cdb52 /target/linux/ar7/patches-2.6.30/140-watchdog_bootcr.patch | |
| parent | 304fbfa8412f3db06b902becedfd9be171ce0622 (diff) | |
| download | upstream-cbe91ce7403638af393a6ff5b174b947d9bd5daf.tar.gz upstream-cbe91ce7403638af393a6ff5b174b947d9bd5daf.tar.bz2 upstream-cbe91ce7403638af393a6ff5b174b947d9bd5daf.zip | |
register watchdog only if enabled in hardware (#2378)
SVN-Revision: 17125
Diffstat (limited to 'target/linux/ar7/patches-2.6.30/140-watchdog_bootcr.patch')
| -rw-r--r-- | target/linux/ar7/patches-2.6.30/140-watchdog_bootcr.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/ar7/patches-2.6.30/140-watchdog_bootcr.patch b/target/linux/ar7/patches-2.6.30/140-watchdog_bootcr.patch new file mode 100644 index 0000000000..21c95a7652 --- /dev/null +++ b/target/linux/ar7/patches-2.6.30/140-watchdog_bootcr.patch @@ -0,0 +1,31 @@ +--- a/drivers/watchdog/ar7_wdt.c ++++ b/drivers/watchdog/ar7_wdt.c +@@ -298,14 +298,28 @@ static struct miscdevice ar7_wdt_miscdev + .fops = &ar7_wdt_fops, + }; + ++#define AR7_WDT_HARDWARE_ENABLE 0x10 ++ + static int __init ar7_wdt_init(void) + { + int rc; ++ u32 *bootcr; ++ u32 bootcr_value; + + spin_lock_init(&wdt_lock); + + ar7_wdt_get_regs(); + ++ /* arch/mips/ar7/clocks.c is the only other thing that reads this */ ++ bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4); ++ bootcr_value = *bootcr; ++ iounmap(bootcr); ++ ++ if (!(bootcr_value & AR7_WDT_HARDWARE_ENABLE)) { ++ printk(KERN_INFO DRVNAME ": watchdog disabled in hardware (bootcr=%#x)\n", bootcr_value); ++ return -ENODEV; ++ } ++ + if (!request_mem_region(ar7_regs_wdt, sizeof(struct ar7_wdt), + LONGNAME)) { + printk(KERN_WARNING DRVNAME ": watchdog I/O region busy\n"); |