diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2008-06-12 19:14:36 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-06-30 22:30:58 +1000 |
| commit | 5acb08070dcbabf7347ad73cb8a79a145a2a5152 (patch) | |
| tree | ebc163bae3fd236996ff6f031ce28d8e75849c56 | |
| parent | cf2076012f3efbd945ceea67704fe515f8d6171f (diff) | |
powerpc/cell: Disable ptcal in case of crash kdump
We need to disable ptcal before starting a new kernel after a crash,
in order to avoid overwriting data in the kdump kernel.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/platforms/cell/ras.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c index 655704ad03c..505f9b9bdf0 100644 --- a/arch/powerpc/platforms/cell/ras.c +++ b/arch/powerpc/platforms/cell/ras.c @@ -17,6 +17,7 @@ #include <asm/reg.h> #include <asm/io.h> #include <asm/prom.h> +#include <asm/kexec.h> #include <asm/machdep.h> #include <asm/rtas.h> #include <asm/cell-regs.h> @@ -226,6 +227,11 @@ static int cbe_ptcal_notify_reboot(struct notifier_block *nb, return cbe_ptcal_disable(); } +static void cbe_ptcal_crash_shutdown(void) +{ + cbe_ptcal_disable(); +} + static struct notifier_block cbe_ptcal_reboot_notifier = { .notifier_call = cbe_ptcal_notify_reboot }; @@ -241,12 +247,20 @@ int __init cbe_ptcal_init(void) return -ENODEV; ret = register_reboot_notifier(&cbe_ptcal_reboot_notifier); - if (ret) { - printk(KERN_ERR "Can't disable PTCAL, so not enabling\n"); - return ret; - } + if (ret) + goto out1; + + ret = crash_shutdown_register(&cbe_ptcal_crash_shutdown); + if (ret) + goto out2; return cbe_ptcal_enable(); + +out2: + unregister_reboot_notifier(&cbe_ptcal_reboot_notifier); +out1: + printk(KERN_ERR "Can't disable PTCAL, so not enabling\n"); + return ret; } arch_initcall(cbe_ptcal_init); |