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| author | David S. Miller <davem@davemloft.net> | 2017-04-06 07:25:07 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-06 08:24:51 -0700 |
| commit | 6f14f443d3e773439fb9cc6f2685ba90d5d026c5 (patch) | |
| tree | d45c11bba3458a805c4ac766ac85ebcf3c00b1eb /drivers/cpuidle/sysfs.c | |
| parent | faeeb317a5615076dff1ff44b51e862e6064dbd0 (diff) | |
| parent | ea6b1720ce25f92f7a17b2e0c2b653d20773d10a (diff) | |
| download | linux-rt-6f14f443d3e773439fb9cc6f2685ba90d5d026c5.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Mostly simple cases of overlapping changes (adding code nearby,
a function whose name changes, for example).
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/cpuidle/sysfs.c')
| -rw-r--r-- | drivers/cpuidle/sysfs.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index c5adc8c9ac43..ae948b1da93a 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -615,6 +615,18 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev) struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu); int error; + /* + * Return if cpu_device is not setup for this CPU. + * + * This could happen if the arch did not set up cpu_device + * since this CPU is not in cpu_present mask and the + * driver did not send a correct CPU mask during registration. + * Without this check we would end up passing bogus + * value for &cpu_dev->kobj in kobject_init_and_add() + */ + if (!cpu_dev) + return -ENODEV; + kdev = kzalloc(sizeof(*kdev), GFP_KERNEL); if (!kdev) return -ENOMEM; |