From: K Prateek Nayak <kprateek.nayak@amd.com>
To: Mario Limonciello <mario.limonciello@amd.com>,
Huang Rui <ray.huang@amd.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Viresh Kumar <viresh.kumar@linaro.org>,
<linux-pm@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: Perry Yuan <perry.yuan@amd.com>,
K Prateek Nayak <kprateek.nayak@amd.com>
Subject: [PATCH 2/6] cpufreq/amd-pstate: Return -ENOMEM on failure to allocate profile_name
Date: Fri, 8 May 2026 05:17:44 +0000 [thread overview]
Message-ID: <20260508051748.10484-3-kprateek.nayak@amd.com> (raw)
In-Reply-To: <20260508051748.10484-1-kprateek.nayak@amd.com>
Failure to allocate profile name will return -EINVAL from
platform_profile_register() while in fact, it is a failure to allocate
memory for the profile_name string.
Return -ENOMEM when kasprintf() fails to allocate profile_name string.
Fixes: e30ca6dd5345 ("cpufreq/amd-pstate: Add dynamic energy performance preference")
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
---
drivers/cpufreq/amd-pstate.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 5e2d28c73294d..72514be2f30fb 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -1291,6 +1291,8 @@ static int amd_pstate_set_dynamic_epp(struct cpufreq_policy *policy)
return ret;
cpudata->profile_name = kasprintf(GFP_KERNEL, "amd-pstate-epp-cpu%d", cpudata->cpu);
+ if (!cpudata->profile_name)
+ return -ENOMEM;
cpudata->ppdev = platform_profile_register(get_cpu_device(policy->cpu),
cpudata->profile_name,
--
2.34.1
next prev parent reply other threads:[~2026-05-08 5:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-08 5:17 [PATCH 0/6] cpufreq/amd-pstate: Dynamic EPP fixes K Prateek Nayak
2026-05-08 5:17 ` [PATCH 1/6] cpufreq/amd-pstate: Grab "amd_pstate_driver_lock" when toggling dynamic_epp K Prateek Nayak
2026-05-08 5:17 ` K Prateek Nayak [this message]
2026-05-08 5:17 ` [PATCH 3/6] cpufreq/amd-pstate: Allow writes to dynamic_epp when state isn't modified K Prateek Nayak
2026-05-08 5:17 ` [PATCH 4/6] cpufreq/amd-pstate: Reorder notifier unregistration and floor perf reset K Prateek Nayak
2026-05-08 5:17 ` [PATCH 5/6] cpufreq/amd-pstate: Use "epp_default_dc" as default when dynamic_epp is disabled K Prateek Nayak
2026-05-08 5:17 ` [PATCH 6/6] cpufreq/amd-pstate-ut: Drop policy reference before driver switch K Prateek Nayak
2026-05-08 18:04 ` [PATCH 0/6] cpufreq/amd-pstate: Dynamic EPP fixes Mario Limonciello
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