diff options
| author | florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2009-08-04 21:05:55 +0000 |
|---|---|---|
| committer | florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2009-08-04 21:05:55 +0000 |
| commit | c1bb09481ace0acbf1cd7f2de88411ef869bc18c (patch) | |
| tree | 36bc861a68f72008f9ed258cdf4f02cb7f99dbe6 | |
| parent | 42711a9f68f66e3b944d3802a4d70932021bfb24 (diff) | |
[ar7] register watchdog only if enabled in hardware (#2378)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17125 3c298f89-4303-0410-b956-a3cf2f4a3e73
| -rw-r--r-- | target/linux/ar7/patches-2.6.27/140-watchdog_bootcr.patch | 29 | ||||
| -rw-r--r-- | target/linux/ar7/patches-2.6.30/140-watchdog_bootcr.patch | 31 |
2 files changed, 60 insertions, 0 deletions
diff --git a/target/linux/ar7/patches-2.6.27/140-watchdog_bootcr.patch b/target/linux/ar7/patches-2.6.27/140-watchdog_bootcr.patch new file mode 100644 index 000000000..95535def0 --- /dev/null +++ b/target/linux/ar7/patches-2.6.27/140-watchdog_bootcr.patch @@ -0,0 +1,29 @@ +--- a/drivers/watchdog/ar7_wdt.c 2009-01-25 01:17:01.000000000 +1300 ++++ b/drivers/watchdog/ar7_wdt.c 2009-01-25 01:19:15.000000000 +1300 +@@ -293,12 +293,26 @@ + .fops = &ar7_wdt_fops, + }; + ++#define AR7_WDT_HARDWARE_ENABLE 0x10 ++ + static int __init ar7_wdt_init(void) + { + int rc; ++ u32 *bootcr; ++ u32 bootcr_value; + + 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"); 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 000000000..21c95a765 --- /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"); |