From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 666D41EF082; Wed, 19 Feb 2025 08:47:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739954852; cv=none; b=rtf7mNuVgSo7P0mOsVAy5SsMcVWYNTJimFvI7cidvBUazQMn6funQRSfHDsd+Cn7eC4Gvk6FAd0KXovt4g+i8kbaimrCxcqR1uvfvRxEz+J2D1VKtn8giJFcoXfmWyvPD1E2Znb2CgYAPltkqxeKZVM/gNLLNFD0i6WGjOEz8aQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739954852; c=relaxed/simple; bh=xd6IHO3bg0WCtHKsKAVssoW6Kz4dQAhJaWK+Y9EYkwk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VnhgiSnNsq47+YASZ+B6YKLw2I4WyJaEGq+UkvB6tB6qGuUbzstIOnVlu8BJUTSwmHX1HA1TypIy3L3cQDJTVY73GQXn7YwRLNsrpRgBcPBxNygqUQ4jTzcHgD1uuMqu7w7LYlOAS+hN8sr6Hy7DJuQ5dg0TIhCjq12bRQDxEK4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2JnTiXQn; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="2JnTiXQn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D835CC4CEE8; Wed, 19 Feb 2025 08:47:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1739954852; bh=xd6IHO3bg0WCtHKsKAVssoW6Kz4dQAhJaWK+Y9EYkwk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2JnTiXQnpxEjnFmRrp+OcDblY//HoNImqKkn4G9054oiS6PNnnu13jMumjUrtRog2 OOs1PRjlYSUHDvmuHJj39oQZfL2bkxVOOwyGTF+smulvAeG5y7IyrB7arCpQE1+n4U Y6kWx66jq4dyjwrWu1rKSUG+hZDPsga2O7bwtl0k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Andy Shevchenko , Bartosz Golaszewski , Sasha Levin Subject: [PATCH 6.12 055/230] gpiolib: Fix crash on error in gpiochip_get_ngpios() Date: Wed, 19 Feb 2025 09:26:12 +0100 Message-ID: <20250219082603.867907477@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250219082601.683263930@linuxfoundation.org> References: <20250219082601.683263930@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andy Shevchenko [ Upstream commit 7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44 ] The gpiochip_get_ngpios() uses chip_*() macros to print messages. However these macros rely on gpiodev to be initialised and set, which is not the case when called via bgpio_init(). In such a case the printing messages will crash on NULL pointer dereference. Replace chip_*() macros by the respective dev_*() ones to avoid such crash. Fixes: 55b2395e4e92 ("gpio: mmio: handle "ngpios" properly in bgpio_init()") Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20250213155646.2882324-1-andriy.shevchenko@linux.intel.com Signed-off-by: Bartosz Golaszewski Signed-off-by: Sasha Levin --- drivers/gpio/gpiolib.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 44372f8647d51..1e8f0bdb6ae3b 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -905,13 +905,13 @@ int gpiochip_get_ngpios(struct gpio_chip *gc, struct device *dev) } if (gc->ngpio == 0) { - chip_err(gc, "tried to insert a GPIO chip with zero lines\n"); + dev_err(dev, "tried to insert a GPIO chip with zero lines\n"); return -EINVAL; } if (gc->ngpio > FASTPATH_NGPIO) - chip_warn(gc, "line cnt %u is greater than fast path cnt %u\n", - gc->ngpio, FASTPATH_NGPIO); + dev_warn(dev, "line cnt %u is greater than fast path cnt %u\n", + gc->ngpio, FASTPATH_NGPIO); return 0; } -- 2.39.5