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Commit 9b0703fe authored by Thibaut Varene's avatar Thibaut Varene Committed by Kyle McMartin
Browse files

[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: default avatarThibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: default avatarKyle McMartin <kyle@parisc-linux.org>
parent 8ffaeaf4

arch/parisc/kernel/pdc_chassis.c

+24 −20
Original line number Diff line number Diff line
@@ -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;
@@ -133,22 +135,14 @@ 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;

		}

		printk(KERN_INFO "Enabling %s chassis codes support v%s\n",

				is_pdc_pat() ? "PDC_PAT" : "regular",

				PDC_CHASSIS_VER);



		if (handle) {

		/* initialize panic notifier chain */

		atomic_notifier_chain_register(&panic_notifier_list,

				&pdc_chassis_panic_block);
@@ -156,7 +150,6 @@ void __init parisc_pdc_chassis_init(void) 
		/* 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;