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[151.243.208.241]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5b8b57cc66fsm1036205e87.37.2026.09.16.09.23.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2026 09:23:56 -0700 (PDT) From: Maria Lisina Date: Wed, 16 Sep 2026 21:23:47 +0500 Subject: [PATCH v7 1/4] mfd: intel-lpss: Remove redundant DebugFS error check Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260916-intel-lpss-debugfs-v7-1-eb51d41f55e0@gmail.com> References: <20260916-intel-lpss-debugfs-v7-0-eb51d41f55e0@gmail.com> In-Reply-To: <20260916-intel-lpss-debugfs-v7-0-eb51d41f55e0@gmail.com> To: Andy Shevchenko , Lee Jones Cc: mfd@lists.linux.dev, linux-kernel@vger.kernel.org, Maria Lisina X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1838; i=sekoohaka.sarisan@gmail.com; h=from:subject:message-id; bh=FGooVTE3n+m1r0RsIid6S680o4fwqpE02/2UW1WT6nk=; b=owEBbQKS/ZANAwAKARPrfuqZo5+iAcsmYgBqqsKY0qqZ8z2V4Ludy7CoJ+HYXkat4uBUe2QnC 648hIXfre+JAjMEAAEKAB0WIQQ8HZKKOdqg5DRiM0sT637qmaOfogUCaqrCmAAKCRAT637qmaOf ouaTD/9oWWuM0CJSFi0FlCQ0UbyKB4L+1vobuJZ3WVXPN//hcQLxwrETBGcmuAriRJqcEk8Vn7y otOPiKhzYQqbRWsYScAsw2XJlsPtFZZLXjhpYbIbOMMBxLnMQRgFQBYyJVnqhgIQrwQzXrtGCi8 tdjaqk4zfcK7zls9DHSf6y3bKwhd8f9TcfCjw1dh8TbA7HvQLMQW2AGnS1UQTW9ecNlADCAh9As AOY3KKoMyw1ucrZRhBqLiwVoVX+jZRLPOpnV1ZzsZHNK24uZmUrDFpfjqd3mOa3/pL+1zl/bSh/ WchQ7k8mFgS92SOJPNfgH+k4dtPvm+5mRMlg0l8beTi3DK7IHYqguGL8Q+0da3kwh+NwVP8nw6/ vsYfBjeimAG+kBDBgXTi1iDprcxNikWyvvp3jwcTIJ2r2/4LTFJO620F/tu0U45Vu7wL2W/Xbi1 ww+gxozHKT1BgF+DWWIB5i2i222Qt55AoNdM8Zq5n7bXu98Iq7TgTY35qL/gKXxg84gkSEHEf16 yd6xn3nPCCGVTMPxOf1qZ6Szs2MX4lDP0uQwojMBid0HsmH2ctPkR/4s7vGhuyIF/NuOLD6HvqJ zfpwUz5VWkZQ+nE/VWynSHLDH1yBggJMAmNPUekhL8Nb1VZ6stIRme0FN6CYwc57zx5pzTn61gL A036FtYQ2p3owlQ== X-Developer-Key: i=sekoohaka.sarisan@gmail.com; a=openpgp; fpr=3C1D928A39DAA0E43462334B13EB7EEA99A39FA2 The DebugFS API is designed to handle errors gracefully. Any explicit checking on return values is considered an anti-pattern. This patch removes unnecessary error checking and converts intel_lpss_debugfs_add() into a void function. Reviewed-by: Andy Shevchenko Signed-off-by: Maria Lisina --- drivers/mfd/intel-lpss.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c index 63d6694f71457b2e09d238af0a9bfb897a169a64..b6958e99cf54d3c8eeca1ba3805= 5a9389678f6c3 100644 --- a/drivers/mfd/intel-lpss.c +++ b/drivers/mfd/intel-lpss.c @@ -142,13 +142,11 @@ static void intel_lpss_cache_ltr(struct intel_lpss *l= pss) lpss->idle_ltr =3D readl(lpss->priv + LPSS_PRIV_IDLELTR); } =20 -static int intel_lpss_debugfs_add(struct intel_lpss *lpss) +static void intel_lpss_debugfs_add(struct intel_lpss *lpss) { struct dentry *dir; =20 dir =3D debugfs_create_dir(dev_name(lpss->dev), intel_lpss_debugfs); - if (IS_ERR(dir)) - return PTR_ERR(dir); =20 /* Cache the values into lpss structure */ intel_lpss_cache_ltr(lpss); @@ -158,7 +156,6 @@ static int intel_lpss_debugfs_add(struct intel_lpss *lp= ss) debugfs_create_x32("idle_ltr", S_IRUGO, dir, &lpss->idle_ltr); =20 lpss->debugfs =3D dir; 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[151.243.208.241]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5b8b57cc66fsm1036205e87.37.2026.09.16.09.23.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2026 09:24:00 -0700 (PDT) From: Maria Lisina Date: Wed, 16 Sep 2026 21:23:48 +0500 Subject: [PATCH v7 2/4] mfd: intel-lpss: Use plain octal values for file permissions Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260916-intel-lpss-debugfs-v7-2-eb51d41f55e0@gmail.com> References: <20260916-intel-lpss-debugfs-v7-0-eb51d41f55e0@gmail.com> In-Reply-To: <20260916-intel-lpss-debugfs-v7-0-eb51d41f55e0@gmail.com> To: Andy Shevchenko , Lee Jones Cc: mfd@lists.linux.dev, linux-kernel@vger.kernel.org, Maria Lisina X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1154; i=sekoohaka.sarisan@gmail.com; h=from:subject:message-id; bh=jzhzRVq7BASQjDartlB8xIX0fc5cN6M65blwwfuQnJM=; b=owEBbQKS/ZANAwAKARPrfuqZo5+iAcsmYgBqqsKYntMYpWKjAwufiOQpd0/qm3peZ7hV+MAQo EEvIft3A62JAjMEAAEKAB0WIQQ8HZKKOdqg5DRiM0sT637qmaOfogUCaqrCmAAKCRAT637qmaOf ojrqEACLCAsDQkObxcWyvAmnuMHXBmg+s01Me5+U4xeRh8mdKP7pocghJfxBxWSMUgBPm46ATYX k/B+P0bxicJFxL5uyxzyAU0o3CmpB8lovD02is2jHBlifXTKEW7qy9oP5nX2ZN/M4oINLHsuhCM W9DNJlWAsH6gAALEYilsmBUar5QvwFiE87aBv2UdgDhT1UtKKZ3TxBrKV3DfT3q4TXYOHxFjDmw xMUbF68qTzCC6A4XGGF23VzsUv/54HagN5HNcBBLQwf6F+aLKlOlkifcxOyhjY26Q202Wze6xoM kHLL/MrhF68MlymJQoA+7Y3hxn0eushaD883rlwSAccdqF2U0s3at0CX0GjGqNp4POWcz4cn8G5 Dm2KfeElV6OsRT9TCCby0lne2TY4mgrzxFtUbPonxspwLp/cBApmVfkaET1FugUWHTS5FMTOn9h Y/0/M/31c3fcz1fLGMwKGpzyhOg9VqtFKAop2CcPfaBIOyZqq3jq8jQhmnUbIHs8SGJ08x4lNGt Bbz4IdVL98bxEh/avViaa2xwJhC27fXURmyAIrzZEnSyPPDjfTvF8NTM/hKCUZwMHgQTO7YMyUC TXqde8BUK5JUil5ffuPXKGhBZEbGqsA4GtKg7VAYNZkwEooeiPTYnXDdwrfC2q2o3ZLSvRbYIhV pqrdpOD28TM0BvA== X-Developer-Key: i=sekoohaka.sarisan@gmail.com; a=openpgp; fpr=3C1D928A39DAA0E43462334B13EB7EEA99A39FA2 S_IRUGO macro is obsoleted and not recommended to use, therefore replace it with plain octal values. Reviewed-by: Andy Shevchenko Signed-off-by: Maria Lisina --- drivers/mfd/intel-lpss.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c index b6958e99cf54d3c8eeca1ba38055a9389678f6c3..190de88d146aae9418566adf36a= 47d11afa90b2a 100644 --- a/drivers/mfd/intel-lpss.c +++ b/drivers/mfd/intel-lpss.c @@ -151,9 +151,9 @@ static void intel_lpss_debugfs_add(struct intel_lpss *l= pss) /* Cache the values into lpss structure */ intel_lpss_cache_ltr(lpss); =20 - debugfs_create_x32("capabilities", S_IRUGO, dir, &lpss->caps); - debugfs_create_x32("active_ltr", S_IRUGO, dir, &lpss->active_ltr); - debugfs_create_x32("idle_ltr", S_IRUGO, dir, &lpss->idle_ltr); + debugfs_create_x32("capabilities", 0444, dir, &lpss->caps); + debugfs_create_x32("active_ltr", 0444, dir, &lpss->active_ltr); + debugfs_create_x32("idle_ltr", 0444, dir, &lpss->idle_ltr); =20 lpss->debugfs =3D dir; } --=20 2.47.3 From nobody Fri Sep 25 04:38:26 2026 Received: from mail-lf2-f12.google.com (mail-lf2-f12.google.com [74.125.229.204]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9291B42E420 for ; 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Reviewed-by: Andy Shevchenko Signed-off-by: Maria Lisina --- drivers/mfd/intel-lpss.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c index 190de88d146aae9418566adf36a47d11afa90b2a..170cc004a9449cb352e3e1ef22c= eb35759368ff4 100644 --- a/drivers/mfd/intel-lpss.c +++ b/drivers/mfd/intel-lpss.c @@ -144,18 +144,14 @@ static void intel_lpss_cache_ltr(struct intel_lpss *l= pss) =20 static void intel_lpss_debugfs_add(struct intel_lpss *lpss) { - struct dentry *dir; - - dir =3D debugfs_create_dir(dev_name(lpss->dev), intel_lpss_debugfs); + lpss->debugfs =3D debugfs_create_dir(dev_name(lpss->dev), intel_lpss_debu= gfs); =20 /* Cache the values into lpss structure */ intel_lpss_cache_ltr(lpss); =20 - debugfs_create_x32("capabilities", 0444, dir, &lpss->caps); - debugfs_create_x32("active_ltr", 0444, dir, &lpss->active_ltr); - debugfs_create_x32("idle_ltr", 0444, dir, &lpss->idle_ltr); - - lpss->debugfs =3D dir; + debugfs_create_x32("capabilities", 0444, lpss->debugfs, &lpss->caps); 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[151.243.208.241]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5b8b57cc66fsm1036205e87.37.2026.09.16.09.24.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2026 09:24:03 -0700 (PDT) From: Maria Lisina Date: Wed, 16 Sep 2026 21:23:50 +0500 Subject: [PATCH v7 4/4] mfd: intel-lpss: Switch to debugfs_remove() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260916-intel-lpss-debugfs-v7-4-eb51d41f55e0@gmail.com> References: <20260916-intel-lpss-debugfs-v7-0-eb51d41f55e0@gmail.com> In-Reply-To: <20260916-intel-lpss-debugfs-v7-0-eb51d41f55e0@gmail.com> To: Andy Shevchenko , Lee Jones Cc: mfd@lists.linux.dev, linux-kernel@vger.kernel.org, Maria Lisina X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=905; i=sekoohaka.sarisan@gmail.com; h=from:subject:message-id; bh=ngHy1BRmwRuVWcjURHW3vBTNNYcsBndiD1VA3Og2SHM=; b=kA0DAAoBE+t+6pmjn6IByyZiAGqqwpijb0mm7Z7Aa077tn0XyyBD0ZIUfG0CBN9avF4tnmKJr YkCMwQAAQoAHRYhBDwdkoo52qDkNGIzSxPrfuqZo5+iBQJqqsKYAAoJEBPrfuqZo5+iEmIQAJdE imQtboGbbGZFwvZXG4zc+1xYG9mNj+soYy1M5Z6tfMDrFgewk4EyhePERC+dtOsex43rufmawUQ 42H6YPVjyiHizeUR5b1m3iolu9nl2g6b2YCQ/VVLX/+j0JafQMrKrtG3SAun4wkjjytQS6QT/nJ xPcNye9km7pwiN04ISH6iL5xbo5iKH0Q3j9nveAwDF/+8o4urlOGE5hiqganq4vdVa/Q5w14Gpq QQLVMC+0ZCNiyKgfaGS6V/Id847JZW5Y7GHri4zmkBclJKUsiW4aamR3YBcDTHJnXTayd+EYhMz fGxXBAyGauem6YArXfQCtLIcrtohbMivG//yJFLqfQ0uKhWtafgFjVOIKzU3p9+TF2a4bmhfydq ubGOQ/MGKRPEsZzAX3TzjuE7dzSpaIKVdhpqS8DSrw/KfpuMDwJoOfQC7cnyWtfKTbWrnAEC6q3 FojX4pHf2fbl3pRPiekMfOIeD7PYSo0lAbOyIlOpcfmlnLTEVgIzvB8HIdwkL8ibQPmlBaK1ki9 OLgFp8gckg6hHlEkxOgNBTLGhImW78S0n3ktvzi25mZn8AtFnz27fg3Ufi2xy1gccz8WFS+yq0j 4IURBj5mXxtu0As9EErT8A6kd55aCELvFuwnCW9TdboV/2Xgr0sktFTjEx9/b2BEydF/RebaCzw Gss9N X-Developer-Key: i=sekoohaka.sarisan@gmail.com; a=openpgp; fpr=3C1D928A39DAA0E43462334B13EB7EEA99A39FA2 debugfs_remove_recursive() is deprecated and has become an alias to debugfs_remove(), replace it with the direct debugfs_remove() call instead. Reviewed-by: Andy Shevchenko Signed-off-by: Maria Lisina --- drivers/mfd/intel-lpss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c index 170cc004a9449cb352e3e1ef22ceb35759368ff4..29f30ef0da9902a9353eb9c12f6= 121b4a7ed8c6e 100644 --- a/drivers/mfd/intel-lpss.c +++ b/drivers/mfd/intel-lpss.c @@ -156,7 +156,7 @@ static void intel_lpss_debugfs_add(struct intel_lpss *l= pss) =20 static void intel_lpss_debugfs_remove(struct intel_lpss *lpss) { - debugfs_remove_recursive(lpss->debugfs); + debugfs_remove(lpss->debugfs); } =20 static void intel_lpss_ltr_set(struct device *dev, s32 val) --=20 2.47.3