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Fri, 20 Feb 2026 15:06:10 -0800 (PST) Received: from Mac.home ([142.198.109.43]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-5070d6c9de8sm4675951cf.26.2026.02.20.15.06.08 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 20 Feb 2026 15:06:09 -0800 (PST) From: Neel Bullywon To: apw@canonical.com, joe@perches.com Cc: dwaipayanray1@gmail.com, lukas.bulwahn@gmail.com, andriy.shevchenko@intel.com, linux-kernel@vger.kernel.org, Neel Bullywon Subject: [PATCH v2] checkpatch: mention fsleep() in MSLEEP and USLEEP_RANGE warnings Date: Fri, 20 Feb 2026 18:05:55 -0500 Message-ID: <20260220230555.56255-1-neelb2403@gmail.com> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Expand the MSLEEP warning to also reference fsleep() alongside msleep(), and expand the USLEEP_RANGE check to reference fsleep() alongside usleep_range() and udelay(). fsleep() autoselects the best sleep mechanism based on duration, making it a useful alternative for developers to consider. Suggested-by: Andy Shevchenko Signed-off-by: Neel Bullywon --- Changes in v2: - Keep existing warning text and expand to mention fsleep() instead of replacing the msleep() reference (Andy). - Also update the USLEEP_RANGE check to mention fsleep() (Andy). scripts/checkpatch.pl | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index c0250244cf7a..03c070bfa0a4 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -6624,7 +6624,7 @@ sub process { # ignore udelay's < 10, however if (! ($delay < 10) ) { CHK("USLEEP_RANGE", - "usleep_range is preferred over udelay; see function description o= f usleep_range() and udelay().\n" . $herecurr); + "usleep_range is preferred over udelay; see function description o= f usleep_range(), udelay(), and fsleep().\n" . $herecurr); } if ($delay > 2000) { WARN("LONG_UDELAY", @@ -6636,7 +6636,7 @@ sub process { if ($line =3D~ /\bmsleep\s*\((\d+)\);/) { if ($1 < 20) { WARN("MSLEEP", - "msleep < 20ms can sleep for up to 20ms; see function description= of msleep().\n" . $herecurr); + "msleep < 20ms can sleep for up to 20ms; see function description= of msleep() and fsleep().\n" . $herecurr); } } =20 base-commit: e7aa57247700733e52a8e2e4dee6a52c2a76de02 --=20 2.44.0