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[CELL] fix cbe_thermal for legacy SLOF tree.

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Previous patch changed based on Christian Krafft's comment.

On some legacy SLOF tree the generic code is unable to ioremap some Cell BE
registers. Therefore the "generic" functions are returning a NULL pointer,
triggering a crash on such platforms.

Let's handle this more gracefully.

Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>
Acked-by: Christian Kraff <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This commit is contained in:
Jean-Christophe DUBOIS 2007-07-20 21:39:24 +02:00 committed by Arnd Bergmann
parent 64bafa9db7
commit 827e3648dc
1 changed files with 20 additions and 5 deletions
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25
arch/powerpc/platforms/cell/cbe_thermal.c
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@ -292,7 +292,7 @@ static struct attribute_group ppe_attribute_group = {
/*
* initialize throttling with default values
*/
static void __init init_default_values(void)
static int __init init_default_values(void)
{
int cpu;
struct cbe_pmd_regs __iomem *pmd_regs;
@ -339,25 +339,40 @@ static void __init init_default_values(void)
for_each_possible_cpu (cpu) {
pr_debug("processing cpu %d\n", cpu);
sysdev = get_cpu_sysdev(cpu);
if (!sysdev) {
pr_info("invalid sysdev pointer for cbe_thermal\n");
return -EINVAL;
}
pmd_regs = cbe_get_cpu_pmd_regs(sysdev->id);
if (!pmd_regs) {
pr_info("invalid CBE regs pointer for cbe_thermal\n");
return -EINVAL;
}
out_be64(&pmd_regs->tm_str2, str2);
out_be64(&pmd_regs->tm_str1.val, str1.val);
out_be64(&pmd_regs->tm_tpr.val, tpr.val);
out_be64(&pmd_regs->tm_cr1.val, cr1.val);
out_be64(&pmd_regs->tm_cr2, cr2);
}
return 0;
}
static int __init thermal_init(void)
{
init_default_values();
int rc = init_default_values();
spu_add_sysdev_attr_group(&spu_attribute_group);
cpu_add_sysdev_attr_group(&ppe_attribute_group);
if (rc == 0) {
spu_add_sysdev_attr_group(&spu_attribute_group);
cpu_add_sysdev_attr_group(&ppe_attribute_group);
}
return 0;
return rc;
}
module_init(thermal_init);