diff options
Diffstat (limited to 'target/linux/ar7/patches-2.6.27/140-watchdog_bootcr.patch')
| -rw-r--r-- | target/linux/ar7/patches-2.6.27/140-watchdog_bootcr.patch | 29 |
1 files changed, 29 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 0000000000..95535def0c --- /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"); |