From: "Mario Limonciello (AMD)" <superm1@kernel.org>
To: "Gautham R . Shenoy" <gautham.shenoy@amd.com>
Cc: Perry Yuan <perry.yuan@amd.com>,
linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT
AND 64-BIT)),
linux-pm@vger.kernel.org (open list:CPU FREQUENCY SCALING
FRAMEWORK), Mario Limonciello <superm1@kernel.org>
Subject: [PATCH] cpufreq/amd-pstate: Use sysfs_match_string() for epp
Date: Wed, 24 Sep 2025 12:50:16 -0500 [thread overview]
Message-ID: <20250924175016.709957-1-superm1@kernel.org> (raw)
Rather than scanning the buffer and manually matching the string
use the sysfs macros.
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
---
drivers/cpufreq/amd-pstate.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index ba2adea03db1..b8af6cad9e2c 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -1157,15 +1157,10 @@ static ssize_t store_energy_performance_preference(
struct cpufreq_policy *policy, const char *buf, size_t count)
{
struct amd_cpudata *cpudata = policy->driver_data;
- char str_preference[21];
ssize_t ret;
u8 epp;
- ret = sscanf(buf, "%20s", str_preference);
- if (ret != 1)
- return -EINVAL;
-
- ret = match_string(energy_perf_strings, -1, str_preference);
+ ret = sysfs_match_string(energy_perf_strings, buf);
if (ret < 0)
return -EINVAL;
--
2.51.0
next reply other threads:[~2025-09-24 17:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-24 17:50 Mario Limonciello (AMD) [this message]
2025-10-09 4:32 ` [PATCH] cpufreq/amd-pstate: Use sysfs_match_string() for epp Gautham R. Shenoy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250924175016.709957-1-superm1@kernel.org \
--to=superm1@kernel.org \
--cc=gautham.shenoy@amd.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=perry.yuan@amd.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox