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 57AAE362; Mon, 28 Nov 2022 06:16:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6428FC433D7; Mon, 28 Nov 2022 06:16:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1669616199; bh=ypKwixzldPb7kQWuOxo+5LWR+IrDt1cLNbjX20e7Zeg=; h=From:To:Cc:Subject:Date:From; b=EdX6WAuLVe+R0n4yj7msuQgS3CTsToakfIhaZE0DkQqcxaDZunj9Y1UMhywWEDQmr fcMsF1PO0y5nkdbTGi3HXxvE+nkDwWNCaZto8bnVkqRZ2G10lEdmbsP2otwhvX4Neo TCfLlJxQfsnVqYDCWtoLCeQ1ljU09NnqZkbHWnf3lZBfA2gtUCaS4f5RZ4do0s5zSF D+11y7EDCeGmeY85WX9D0xA69Tj0YwYr8WV/bb9OBSd+nw6OHzoQnwYOWjAikfTN3T DkPqtWqB4Lw/64iBIvXT6l4UsAY/hnIVIzMyl+l2sBrLxjGXJR8VKW5YBiQGXZsxmQ S/exotE8Yv7uA== From: Nathan Chancellor To: Mauro Carvalho Chehab , Sakari Ailus , Lad Prabhakar Cc: Nick Desaulniers , Tom Rix , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, patches@lists.linux.dev, Nathan Chancellor Subject: [PATCH] media: rzg2l-cru: Remove unnecessary shadowing of ret in rzg2l_csi2_s_stream() Date: Sun, 27 Nov 2022 23:16:22 -0700 Message-Id: <20221128061622.1470489-1-nathan@kernel.org> X-Mailer: git-send-email 2.38.1 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Clang warns: drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c:445:7: error: variable 'ret' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized] if (ret) ^~~ drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c:475:9: note: uninitialized use occurs here return ret; ^~~ drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c:445:3: note: remove the 'if' if its condition is always false if (ret) ^~~~~~~~ drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c:441:7: error: variable 'ret' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized] if (ret) ^~~ drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c:475:9: note: uninitialized use occurs here return ret; ^~~ drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c:441:3: note: remove the 'if' if its condition is always false if (ret) ^~~~~~~~ drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c:431:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 2 errors generated. ret is unnecessarily shadowed, meaning the assignments to ret within the first 'if (enable)' block are only applied to the inner scope, not the outer one as intended. Remove the shadowing to fix the warnings and make everything work correctly. Fixes: 51e8415e39a9 ("media: platform: Add Renesas RZ/G2L MIPI CSI-2 receiver driver") Link: https://github.com/ClangBuiltLinux/linux/issues/1764 Signed-off-by: Nathan Chancellor --- drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c index aa752b80574c..3deb09be6400 100644 --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c @@ -431,8 +431,6 @@ static int rzg2l_csi2_s_stream(struct v4l2_subdev *sd, int enable) int ret; if (enable) { - int ret; - ret = pm_runtime_resume_and_get(csi2->dev); if (ret) return ret; base-commit: 6a5a4514854a637d01c50f5ea17b28f78b31ddb8 -- 2.38.1