diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-07-25 10:46:07 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-07-25 10:46:07 +0200 |
| commit | fdc75701578269f6931975aebf4069d9d8c77d34 (patch) | |
| tree | d72c802585343afb7a31b442c781f939702e6e2b | |
| parent | c528adefd645f5cd16fff658c863e2142d775c61 (diff) | |
| parent | e0a12445d1cb186d875410d093a00d215bec6a89 (diff) | |
| download | linux-fdc75701578269f6931975aebf4069d9d8c77d34.tar.bz2 | |
Merge branch 'pm-cpufreq'
* pm-cpufreq:
cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init()
| -rw-r--r-- | drivers/cpufreq/pasemi-cpufreq.c | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c index 93f39a1d4c3d..c66f566a854c 100644 --- a/drivers/cpufreq/pasemi-cpufreq.c +++ b/drivers/cpufreq/pasemi-cpufreq.c @@ -131,10 +131,18 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy) int err = -ENODEV; cpu = of_get_cpu_node(policy->cpu, NULL); + if (!cpu) + goto out; + max_freqp = of_get_property(cpu, "clock-frequency", NULL); of_node_put(cpu); - if (!cpu) + if (!max_freqp) { + err = -EINVAL; goto out; + } + + /* we need the freq in kHz */ + max_freq = *max_freqp / 1000; dn = of_find_compatible_node(NULL, NULL, "1682m-sdc"); if (!dn) @@ -171,16 +179,6 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy) } pr_debug("init cpufreq on CPU %d\n", policy->cpu); - - max_freqp = of_get_property(cpu, "clock-frequency", NULL); - if (!max_freqp) { - err = -EINVAL; - goto out_unmap_sdcpwr; - } - - /* we need the freq in kHz */ - max_freq = *max_freqp / 1000; - pr_debug("max clock-frequency is at %u kHz\n", max_freq); pr_debug("initializing frequency table\n"); @@ -199,9 +197,6 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy) cpufreq_generic_init(policy, pas_freqs, get_gizmo_latency()); return 0; -out_unmap_sdcpwr: - iounmap(sdcpwr_mapbase); - out_unmap_sdcasr: iounmap(sdcasr_mapbase); out: |