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nexedi
linux
Commits
90ff2b72
Commit
90ff2b72
authored
Mar 24, 2017
by
Rafael J. Wysocki
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Merge branch 'pm-cpuidle-fixes'
* pm-cpuidle-fixes: cpuidle: Validate cpu_dev in cpuidle_add_sysfs()
parents
6488294e
ad0a45fd
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drivers/cpuidle/sysfs.c
drivers/cpuidle/sysfs.c
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drivers/cpuidle/sysfs.c
View file @
90ff2b72
...
@@ -615,6 +615,18 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev)
...
@@ -615,6 +615,18 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev)
struct
device
*
cpu_dev
=
get_cpu_device
((
unsigned
long
)
dev
->
cpu
);
struct
device
*
cpu_dev
=
get_cpu_device
((
unsigned
long
)
dev
->
cpu
);
int
error
;
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
);
kdev
=
kzalloc
(
sizeof
(
*
kdev
),
GFP_KERNEL
);
if
(
!
kdev
)
if
(
!
kdev
)
return
-
ENOMEM
;
return
-
ENOMEM
;
...
...
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