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[151.243.208.241]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5b8b57c3d46sm978675e87.19.2026.09.16.07.36.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2026 07:36:58 -0700 (PDT) From: Maria Lisina Date: Wed, 16 Sep 2026 19:36:39 +0500 Subject: [PATCH v6 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-v6-1-5c118ac430ed@gmail.com> References: <20260916-intel-lpss-debugfs-v6-0-5c118ac430ed@gmail.com> In-Reply-To: <20260916-intel-lpss-debugfs-v6-0-5c118ac430ed@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=1772; i=sekoohaka.sarisan@gmail.com; h=from:subject:message-id; bh=9VktpTC98V4MOQTaljcWhU8XsFF9PvnD33EIqxRl2hQ=; b=owEBbQKS/ZANAwAKARPrfuqZo5+iAcsmYgBqqqmHJECu6BIf5JczQSxOe6N/toMW82BiZEQec r2/CONHONGJAjMEAAEKAB0WIQQ8HZKKOdqg5DRiM0sT637qmaOfogUCaqqphwAKCRAT637qmaOf osamD/9+NoBFBakOk2sAxgWQkFQdhlBOMrx/fsvZDIwjd290Wn6s7uPoRNCWVw1nvVKd8ZwkTiu Cid4AjsPUz8hN6zU90pBJyCCWDQDdHZPORWWJtskwPL3mY9cMykt2A+lfzuywn3jRyb4v1tIUly 8w6Ji358l4L18wXsx44YfVI05SM1g3w1oFPg3AAYCOetXqxr7M+wR0C2LLxBBbLheg3K0ixhFB4 w4WymQ0Y0Xq9/Q9eaq5dt0ed25OM4i7UtQ+8x7X9k4Us+oGp0ESFEoOWXJdBxh4UXpkRmEnepOj BAH34xAf8BU/4ZuGCOQgVgQ+mWdxFl973Y5n7GzEv6ierzT0ZU5a6o18ZlBvl8lDaHVP1hdIPfW SlyZ++M0rUOGPQG3L+RrLr12ZenmxZT35xy5UmFrzZByUDCcV3bOdUt7xI/ink6uBlrdWTtC3we IE1hCKo4U2RJ9MqNqflFScx4or7D5H4+NaXY2doRSa8Sg4TYOGKSpO8EFcYwA3GvfcSrPI4VdoP wxQPRd8/mmItCgHxRztCTAZH4nvkx4jDj8IIZIcrodBJCDItfLClTGkRh4zEk8/RYTpoeXZDt9r FchPsRWj78CMq/MoDiOO+ve8uLeBix2DW2huro1B4RFH4ghY6054uP8W0E6wAz4VZeoxSJ1Txwd fSi8UOuKwG2iHIQ== 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. Signed-off-by: Maria Lisina Reviewed-by: Andy Shevchenko --- 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 2adb3069b0e04-5b8b57c3d46sm978675e87.19.2026.09.16.07.36.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2026 07:36:59 -0700 (PDT) From: Maria Lisina Date: Wed, 16 Sep 2026 19:36:40 +0500 Subject: [PATCH v6 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-v6-2-5c118ac430ed@gmail.com> References: <20260916-intel-lpss-debugfs-v6-0-5c118ac430ed@gmail.com> In-Reply-To: <20260916-intel-lpss-debugfs-v6-0-5c118ac430ed@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=1088; i=sekoohaka.sarisan@gmail.com; h=from:subject:message-id; bh=wLAj26g8Fos9OKny+J7HvStcJwwB6OXhbJxZsU6y7UI=; b=owEBbQKS/ZANAwAKARPrfuqZo5+iAcsmYgBqqqmHdpqItY15gmUalc/Z7UMorhspKomLGbzhV eL7oiRKRAuJAjMEAAEKAB0WIQQ8HZKKOdqg5DRiM0sT637qmaOfogUCaqqphwAKCRAT637qmaOf ovFTD/4vs6R6cJMl56Z2k7M+arjdgZbW5RedAlHmvCnHsfHbLLcSjgvCWRVqM9jXkNHen+Itd6d dg7L9hIBHzWV38UZp6yaWb6qxrTL2ufdSvD/NckBnY7bZUhdey3PIHQVNABOyqzN+dokmynOc2z g2zuCl9zhuLMdLP2ZIVa0r8/GUADmvFIq8bkgFw8yeQOGLFqIakbUAT8xQAeuFe9Jy5L/6gujUT lBxhwfk4OkSbQexi8M2Erl8eidiCBVCisdPehnsvvLIWZNVmBxArnL352crlBNt9GFuccEpModh 31bVdRtY5RXoiR8X5eXkK7dxyH3SJeDYMC2PVQ5Et0sH6+yQK55xZyx6Nij8ujJ1IcZRFlgtIp3 lqAYiL9phB3cZmdtefseDvilZ19n229OXwpu/vcwuPG6rbXsUlXF3XGL0Uyr2LHk6PhQER0j4yR JcKJ+EQ4IoJ0MIN1xCvCZvitT7wWdfSvouZ1YW95TFYd88SejJkzxxBKwJRDxZlcXcTCrsXdcSy oTuDsOygzKxKFK95PaX9Sts9V5LrpPymcLzxOok4ebjwejf0HIFqBxkU2tr0UmegS61eqx/eqVs MCiVLT9opNgPfYhREBtG0in9h6VOxSSAeZbdbicbYmZ50Ahildo3cn4LNznewTmSQijB2bOcdvW pEerLfZ/bnkxFcg== 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. Signed-off-by: Maria Lisina Reviewed-by: Andy Shevchenko --- 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 04:38:16 2026 Received: from mail-lf2-f13.google.com (mail-lf2-f13.google.com [74.125.229.205]) (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 892CF51990E for ; 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[151.243.208.241]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5b8b57c3d46sm978675e87.19.2026.09.16.07.36.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2026 07:37:00 -0700 (PDT) From: Maria Lisina Date: Wed, 16 Sep 2026 19:36:41 +0500 Subject: [PATCH v6 3/4] mfd: intel-lpss: Remove extra DebugFS dentry 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-v6-3-5c118ac430ed@gmail.com> References: <20260916-intel-lpss-debugfs-v6-0-5c118ac430ed@gmail.com> In-Reply-To: <20260916-intel-lpss-debugfs-v6-0-5c118ac430ed@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=1487; i=sekoohaka.sarisan@gmail.com; h=from:subject:message-id; bh=xNWXjh2jZNqUOiPZC4IQkFyQMkKV6evtU42asOP+reA=; b=owEBbQKS/ZANAwAKARPrfuqZo5+iAcsmYgBqqqmH447aC/HryKCjz2EfIa561rW+fvUeP1DmG vL+R1k+6tGJAjMEAAEKAB0WIQQ8HZKKOdqg5DRiM0sT637qmaOfogUCaqqphwAKCRAT637qmaOf om5wD/wP7wOu9p6ii/PYG1fI6dc3hxzCshOrpD28DfA7aO6j6fpT8C6pqOy+IB8hNyOHdIuEygF m3vRvYjbVuxlafJMj2V7enO5sL9+JzSkwmwyqT3DfF54FDzN2CQluqK1j1lAzABNxm6gXT3AnMy 1TgVpnsxo2P86wkNrVguuP4058uUdmzABaxY5SvP2mhEf7MZNKxELna8AmCWfwknQxsHi9VFwj/ vmGpksHlt9kKZFbO8yOSZMw4hu46d6tPGq8xRJcgbz5qrzbYdvL/xHlCPyk0I3NBBOI1JQ27K60 Klqkb7ecbF1y7+nQluNUwUQ3TKO4Nkus7b2ITGNXdBijPsOpt1Zwn+V5iNlDuHP32iJtNj1P3IY yIRBT5qYMexWcZIwkEeeZLAYn4ZPD3GBk9vEqZmQNKDKXj4Avt8s5Va/kw4z5gFSvp4x6cFC7GA 6ow3M3HI6bc8sNpXGCb3HD4jbxH0fQoIwh/WxgCAIUBut41t4wk12eFVYDAAN8IiWpnk4hj+/+l FlOc/4q9I7y/KFVAb8IIZ+WXY0+zhY0PftsX8CQyAnBwzPKFkX91KSZeCUhwtX0O0HLFa6qi5b5 +ctuW33yQHV7CuYFmliVd77ciJAenc4WVew6c0DQgfKIDTf3m9S3XlVL5jNm2j/GyuWXL6CRMvh gXNM61a9ekcFogg== X-Developer-Key: i=sekoohaka.sarisan@gmail.com; a=openpgp; fpr=3C1D928A39DAA0E43462334B13EB7EEA99A39FA2 There is no point to keep the variable dir just to assing lpss->debugfs to it later, just use lpss->debugfs directly. Signed-off-by: Maria Lisina Reviewed-by: Andy Shevchenko --- drivers/mfd/intel-lpss.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c index 190de88d146aae9418566adf36a47d11afa90b2a..f1a8feb0fdf2042a3b6a8422400= cb8f9511b4876 100644 --- a/drivers/mfd/intel-lpss.c +++ b/drivers/mfd/intel-lpss.c @@ -144,18 +144,18 @@ 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_debugfs); =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; 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[151.243.208.241]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5b8b57c3d46sm978675e87.19.2026.09.16.07.37.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2026 07:37:01 -0700 (PDT) From: Maria Lisina Date: Wed, 16 Sep 2026 19:36:42 +0500 Subject: [PATCH v6 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-v6-4-5c118ac430ed@gmail.com> References: <20260916-intel-lpss-debugfs-v6-0-5c118ac430ed@gmail.com> In-Reply-To: <20260916-intel-lpss-debugfs-v6-0-5c118ac430ed@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=839; i=sekoohaka.sarisan@gmail.com; h=from:subject:message-id; bh=Plcq2owhNg0Sj/G/B7MmlGcqYnIdbvu/V2UiRRh0xc0=; b=owEBbQKS/ZANAwAKARPrfuqZo5+iAcsmYgBqqqmIhbltBtihMGq/M3BExEHj+gmJXlfOt0sEL 5ye5ii2QNOJAjMEAAEKAB0WIQQ8HZKKOdqg5DRiM0sT637qmaOfogUCaqqpiAAKCRAT637qmaOf omcoD/kBF3WXjeuCpjqW3XLz6MXZGZWv0ilitCt5mDR63fcZFXitPP4p+PiduKXI+vB2OVRVkpv 816SWIAoIPBYVqqVs7pYPesWbkhBc1sXWc7z47xDJMmFrv5162mfISLSYUj1lVEvTCdffaO/l/W aVTGA7G9x/hHfU1pEkMTC9vqdpTJQQN8Ta0KEqAVfGM5hxKyjDYDIZ5LR3QcK9pc1cOYyw2kWFO d1XhVflQQJYkq2Xdcw2tKEgNAO9xRf3lYr28r15AENBiP5s4BAKe/LdzUXvi1MCELQUcd3JiL07 tPpGWpahtZEbHqdkH39+VcYAr9Rdvf/0ItM4FYS7kDqiQP00qax8DEs08+C+w4bi0fk3LLjmBqL hG0KJFVpf5Krvt8z7224CiB5lQ44XYXKMC9fhC7A/b4tcJ3UXqiQcWscfcZlivM2UfsH5RyIhE7 nbdFaP4p8biHj4rTGEfBeXC+m9wiOW/5U3CpQD/ubQ2XEhs5xOQkGajkGrSwwXwA+K6qEb/qtQm seXCn2VzSoZ0N8tF5G3FzsTGRGsx0W37ya8qAdSzjr0A0YGZDpM+jYValWsrSOZjR5tPFrUDDdd qm/yWICgh38i+ycs0blPeiCp+m39MyLqlCh3HhrMCxPmXX3BAZ8v5zPKC0F+0vXs+/IBTQMeYB3 ooAHXWWv6f07IxQ== X-Developer-Key: i=sekoohaka.sarisan@gmail.com; a=openpgp; fpr=3C1D928A39DAA0E43462334B13EB7EEA99A39FA2 debugfs_remove_recursive() is deprecated and has become a macro for debugfs_remove(), replace it with the direct debugfs_remove() call instead. Signed-off-by: Maria Lisina Reviewed-by: Andy Shevchenko --- 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 f1a8feb0fdf2042a3b6a8422400cb8f9511b4876..beb01252f9021bbf40b293c8118= 1b29e9b61bf56 100644 --- a/drivers/mfd/intel-lpss.c +++ b/drivers/mfd/intel-lpss.c @@ -160,7 +160,7 @@ 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