From patchwork Mon Jun 9 20:38:36 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 895120 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D061222154B; Mon, 9 Jun 2025 20:39:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749501544; cv=none; b=SNzjZTt4qDOy5kD3yeTE1QOp83DXaGlOymfei2hhjn7TccwIOYppVigcbhl95p50YvGRYO/EGIM/r23em1jqyY7eyhf1CMoe9hq/8G9nSIQw6YDril0drl3lbVPhba9JlPZohHBZaN3c/YulmxbG9hnw7q3pvKjLB84FAhXFCNA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749501544; c=relaxed/simple; bh=C/pblvplmlqteIcRC9Cj7zptfNiOwA02a4YbPNKlgGA=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=KNG+P2Qh4YU7co8DXnVAMDWtLx9sPrLHC1XdeLrR31CfxgqO6gSd/7tyCrnVd40BC08A281VQBM9EWGG4CDjloEeGL4pRPfZUsJMIkVYnvi45tQNyYXmfyzX2fwFKoQ2MCgJWsErISDOLpicD7sijM3aLhq+Uet0l/EtKc2nfgw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=kC3dYwm1; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="kC3dYwm1" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1749501539; bh=C/pblvplmlqteIcRC9Cj7zptfNiOwA02a4YbPNKlgGA=; h=From:Subject:Date:To:Cc:From; b=kC3dYwm171fp/VRlEcywt+TifB1aPZgk8kG9o2ekc3xUd9vdYx05JRaC1dD+2ohs0 ofWbuEByeBc3VKLA+uF1bX5igB8ZC1DfwPXjv+SJnbUvmseL2ItuLfImuol778t73y 7funn6GqjWl3AmRjCgx5NxOJvjKdvwuBx5jPJFx8= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Subject: [PATCH v6 0/3] locking/mutex: Mark devm_mutex_init() as __must_check Date: Mon, 09 Jun 2025 22:38:36 +0200 Message-Id: <20250609-must_check-devm_mutex_init-v6-0-9540d5df9704@weissschuh.net> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAExGR2gC/33P22rDMAwG4Fcpvp6Hz052tfcYJcSKspiRdMRO2 lHy7lM7RgcLRiD4dfFJurKEc8TEXg5XNuMaUzxNFNzTgcHQTu/IY0eZKaGMFFrycUm5gQHhg3e 4js24ZLw0cYqZQwu20qFrqx4ZAZ8z9vFyx9+OlIeY8mn+uu9a5W36w1IrsavkkqMTGGofKvDq9 YwxpQTDMjxPmNnNXtWvZ4USpugpLrgPTnkJJnh0u57+61VFT5OnjEUjfQdQ465nHp4RvugZ+td WPrSE9S7oXc8+PKqiZ8mrVd/Ss7UG9/++bdu+AQiyE7MJAgAA X-Change-ID: 20241031-must_check-devm_mutex_init-cac583bda8fe To: Peter Zijlstra , Ingo Molnar , Waiman Long , Boqun Feng , Vicentiu Galanopulo , Will Deacon , Han Xu , Haibo Chen , Yogesh Gaur , Mark Brown , Lee Jones , Pavel Machek , Andrew Davis Cc: Andy Shevchenko , linux-kernel@vger.kernel.org, Bartosz Golaszewski , Bartosz Golaszewski , linux-spi@vger.kernel.org, imx@lists.linux.dev, linux-leds@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1749501538; l=1793; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=C/pblvplmlqteIcRC9Cj7zptfNiOwA02a4YbPNKlgGA=; b=dujZfz5fwa8CGJhCepivI+/1HSX9H0lWYFoleQaf8mBz6J0qC8Dr8x7biuhPUf240/1MZA3oj gJr617uHIUEDtXsc3vZmGbKokRXP0CgYlZwP4T7mbHkYGnuuHgFIIPI X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= devm_mutex_init() can fail. Make sure everybody checks the return value. All patches should go through the mutex tree together. It would be great if this could go in through a single tree at once. Signed-off-by: Thomas Weißschuh Acked-by: Andrew Davis --- Changes in v6: - Rebase on v6.16-rc1 - Pick up review tag from Bartosz - Fix up spi-nxp-fspi - Fix up leds-lp8860 - Link to v5: https://lore.kernel.org/r/20250505-must_check-devm_mutex_init-v5-1-92fa4b793c6e@weissschuh.net Changes in v5: - Pick up review tag from Andy - Link to v4: https://lore.kernel.org/r/20250407-must_check-devm_mutex_init-v4-1-587bacc9f6b3@weissschuh.net Changes in v4: - Drop already applied leds-1202 driver patch - Rebase on v6.15-rc1 - Link to v3: https://lore.kernel.org/r/20250208-must_check-devm_mutex_init-v3-0-245e417dcc9e@weissschuh.net Changes in v3: - Introduce and use helper macro __mutex_init_ret() - Link to v2: https://lore.kernel.org/r/20250204-must_check-devm_mutex_init-v2-0-7b6271c4b7e6@weissschuh.net Changes in v2: - Rebase on 6.14-rc1 - Fix up leds-1202 driver - Link to v1: https://lore.kernel.org/r/20241202-must_check-devm_mutex_init-v1-1-e60eb97b8c72@weissschuh.net --- Thomas Weißschuh (3): spi: spi-nxp-fspi: check return value of devm_mutex_init() leds: lp8860: Check return value of devm_mutex_init() locking/mutex: Mark devm_mutex_init() as __must_check drivers/leds/leds-lp8860.c | 4 +++- drivers/spi/spi-nxp-fspi.c | 4 +++- include/linux/mutex.h | 11 +++++++---- 3 files changed, 13 insertions(+), 6 deletions(-) --- base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 change-id: 20241031-must_check-devm_mutex_init-cac583bda8fe Best regards,