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author | Colin Ian King <colin.king@canonical.com> | 2021-01-05 10:19:57 +0000 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-17 14:04:21 +0100 |
commit | 8b471834608d67a02c50b692e6bf24ff6cc6dd31 (patch) | |
tree | 009493b219bc202b764ac67c381ce73a0b12bd7b /drivers/cpufreq/elanfreq.c | |
parent | 1bf68c17797073b4fc1459b8584bf98f0b05d377 (diff) | |
download | linux-stable-8b471834608d67a02c50b692e6bf24ff6cc6dd31.tar.gz linux-stable-8b471834608d67a02c50b692e6bf24ff6cc6dd31.tar.bz2 linux-stable-8b471834608d67a02c50b692e6bf24ff6cc6dd31.zip |
cpufreq: powernow-k8: pass policy rather than use cpufreq_cpu_get()
commit 943bdd0cecad06da8392a33093230e30e501eccc upstream.
Currently there is an unlikely case where cpufreq_cpu_get() returns a
NULL policy and this will cause a NULL pointer dereference later on.
Fix this by passing the policy to transition_frequency_fidvid() from
the caller and hence eliminating the need for the cpufreq_cpu_get()
and cpufreq_cpu_put().
Thanks to Viresh Kumar for suggesting the fix.
Addresses-Coverity: ("Dereference null return")
Fixes: b43a7ffbf33b ("cpufreq: Notify all policy->cpus in cpufreq_notify_transition()")
Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/cpufreq/elanfreq.c')
0 files changed, 0 insertions, 0 deletions