diff options
| author | Thibaut Varene <varenet@parisc-linux.org> | 2006-05-04 09:29:32 -0600 |
|---|---|---|
| committer | Kyle McMartin <kyle@hera.kernel.org> | 2006-06-27 23:28:37 +0000 |
| commit | 9b0703fed7ca1af95d4454f45e2f25733f0afa76 (patch) | |
| tree | 28a9dff1a9747e4f58fbe25dc99d85c9fa86c54d /arch/parisc/kernel/pdc_chassis.c | |
| parent | 8ffaeaf42e91930888df09d696a8a6ebe056d0e0 (diff) | |
[PARISC] Work around machines which do not support chassis warnings
pdc_chassis v0.05:
Some machines seems not to implement Chassis warn support. Work around these.
Also cleanup a bit of the code.
Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc/kernel/pdc_chassis.c')
| -rw-r--r-- | arch/parisc/kernel/pdc_chassis.c | 44 |
1 files changed, 24 insertions, 20 deletions
diff --git a/arch/parisc/kernel/pdc_chassis.c b/arch/parisc/kernel/pdc_chassis.c index 51e86c0365c..d47ba1aa825 100644 --- a/arch/parisc/kernel/pdc_chassis.c +++ b/arch/parisc/kernel/pdc_chassis.c @@ -19,6 +19,7 @@ * * TODO: poll chassis warns, trigger (configurable) machine shutdown when * needed. + * Find out how to get Chassis warnings out of PAT boxes? */ #undef PDC_CHASSIS_DEBUG @@ -40,6 +41,7 @@ #include <asm/pdc.h> #include <asm/pdcpat.h> +#define PDC_CHASSIS_VER "0.05" #ifdef CONFIG_PDC_CHASSIS static unsigned int pdc_chassis_enabled __read_mostly = 1; @@ -133,29 +135,20 @@ static struct notifier_block pdc_chassis_reboot_block = { void __init parisc_pdc_chassis_init(void) { #ifdef CONFIG_PDC_CHASSIS - int handle = 0; if (likely(pdc_chassis_enabled)) { DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__); /* Let see if we have something to handle... */ - /* Check for PDC_PAT */ - if (is_pdc_pat()) { - printk(KERN_INFO "Enabling PDC_PAT chassis codes support.\n"); - handle = 1; - } - else { - printk(KERN_INFO "Enabling regular chassis codes support.\n"); - handle = 1; - } - - if (handle) { - /* initialize panic notifier chain */ - atomic_notifier_chain_register(&panic_notifier_list, - &pdc_chassis_panic_block); - - /* initialize reboot notifier chain */ - register_reboot_notifier(&pdc_chassis_reboot_block); - } + printk(KERN_INFO "Enabling %s chassis codes support v%s\n", + is_pdc_pat() ? "PDC_PAT" : "regular", + PDC_CHASSIS_VER); + + /* initialize panic notifier chain */ + atomic_notifier_chain_register(&panic_notifier_list, + &pdc_chassis_panic_block); + + /* initialize reboot notifier chain */ + register_reboot_notifier(&pdc_chassis_reboot_block); } #endif /* CONFIG_PDC_CHASSIS */ } @@ -285,7 +278,18 @@ static int pdc_chassis_warn_pread(char *page, char **start, off_t off, static int __init pdc_chassis_create_procfs(void) { - printk(KERN_INFO "Enabling PDC chassis warnings support.\n"); + unsigned long test; + int ret; + + ret = pdc_chassis_warn(&test); + if ((ret == PDC_BAD_PROC) || (ret == PDC_BAD_OPTION)) { + /* seems that some boxes (eg L1000) do not implement this */ + printk(KERN_INFO "Chassis warnings not supported.\n"); + return 0; + } + + printk(KERN_INFO "Enabling PDC chassis warnings support v%s\n", + PDC_CHASSIS_VER); create_proc_read_entry("chassis", 0400, NULL, pdc_chassis_warn_pread, NULL); return 0; |