The patch titled
cpufreq: fix null object access on Transmeta CPU
has been removed from the -mm tree. Its filename was
cpufreq-fix-null-object-access-on-transmeta-cpu.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
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Subject: cpufreq: fix null object access on Transmeta CPU
From: CHIKAMA masaki <masaki.chikama@xxxxxxxxx>
If cpu specific cpufreq driver(i.e. longrun) has "setpolicy" function,
governor object isn't set into cpufreq_policy object at "__cpufreq_set_policy"
function in driver/cpufreq/cpufreq.c .
This causes a null object access at "store_scaling_setspeed" and
"show_scaling_setspeed" function in driver/cpufreq/cpufreq.c when reading or
writing through /sys interface (ex. cat
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed)
Addresses:
http://bugzilla.kernel.org/show_bug.cgi?id=10654
https://bugzilla.redhat.com/show_bug.cgi?id=443354
Signed-off-by: CHIKAMA Masaki <masaki.chikama@xxxxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxxxxxxxxx>
Cc: Chuck Ebbert <cebbert@xxxxxxxxxx>
Acked-by: Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/cpufreq/cpufreq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN drivers/cpufreq/cpufreq.c~cpufreq-fix-null-object-access-on-transmeta-cpu drivers/cpufreq/cpufreq.c
--- a/drivers/cpufreq/cpufreq.c~cpufreq-fix-null-object-access-on-transmeta-cpu
+++ a/drivers/cpufreq/cpufreq.c
@@ -625,7 +625,7 @@ static ssize_t store_scaling_setspeed(st
unsigned int freq = 0;
unsigned int ret;
- if (!policy->governor->store_setspeed)
+ if (!policy->governor || !policy->governor->store_setspeed)
return -EINVAL;
ret = sscanf(buf, "%u", &freq);
@@ -639,7 +639,7 @@ static ssize_t store_scaling_setspeed(st
static ssize_t show_scaling_setspeed(struct cpufreq_policy *policy, char *buf)
{
- if (!policy->governor->show_setspeed)
+ if (!policy->governor || !policy->governor->show_setspeed)
return sprintf(buf, "<unsupported>\n");
return policy->governor->show_setspeed(policy, buf);
_
Patches currently in -mm which might be from masaki.chikama@xxxxxxxxx are
origin.patch
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