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 C3D272F692E for ; Fri, 17 Oct 2025 14:32:14 +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=1760711534; cv=none; b=FOYFgqdZEY7LtRWlKVHE64GyN4+o0kcBPHdX0kHNsuOGV6UBDxXg+UqvnNVMwQAtqK4aqHvdt60xFcH6fHHfi10xQEmbjrz21ZDUs3VWJzmUf8SUHkZ2eYV0rv6Ht9W2cPZJKLNXC4GucVRNxi6N4c2lT6iLiWmVXrFuNl3RxS0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760711534; c=relaxed/simple; bh=owJEC+KXxcYs9fftef0a8EHfJzTn13Nt37Dd44MP+AQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ilmuVYTcRSYTba8+SAB1L05MqN84nliwQeb/Ad3rjga1w3IswBsIkTDFUuj+/TZR1T7Kl++OmVe12ipz8XL7m1z/QmyVuvF2IJ98unMoWHgMNwqryePK5AlS3A4puZo6yqrAnTTpedDqMVq2hRrqrDRasQ5uijYWfgSYwY0GwI8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B/7U3ird; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="B/7U3ird" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C0DADC4CEFE; Fri, 17 Oct 2025 14:32:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760711534; bh=owJEC+KXxcYs9fftef0a8EHfJzTn13Nt37Dd44MP+AQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B/7U3irdFo33AXPqZD8KTBERF+a09eNSP5EP3LHh3xVuG5o5EJhs1a4emmayOZNzD fR7MLF/wZ0fgSeERHftS1vEbYdJLLS0iL8Uv+B+cbutye4C9GhiOWy6WR8kwpQzg5j 0xLbHmTPU4aae+9DuQ4HwvMDHcDXuBSgzb5/Wx9qokAuVASYW3IttZNVgO6tK9rpPA 8KGf/qKJAorUqlGbevEXZCj2CS6Tw0NkDESUeYGJ9xNHJ7gmqR484cTHC1GTmEksbE oKPh3fmHMVQvVhFEm6+3yYiyc0lIaEQhm6oUA06HWr8Ii9MymphvEuWkM4upsbIl09 8lb+A9N6O93vA== From: Sasha Levin To: stable@vger.kernel.org Cc: Arnd Bergmann , Hans Verkuil , Sasha Levin Subject: [PATCH 6.6.y 5/5] media: s5p-mfc: remove an unused/uninitialized variable Date: Fri, 17 Oct 2025 10:32:08 -0400 Message-ID: <20251017143208.3997488-5-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251017143208.3997488-1-sashal@kernel.org> References: <2025101646-unfunded-bootlace-0264@gregkh> <20251017143208.3997488-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Arnd Bergmann [ Upstream commit 7fa37ba25a1dfc084e24ea9acc14bf1fad8af14c ] The s5p_mfc_cmd_args structure in the v6 driver is never used, not initialized to anything other than zero, but as of clang-21 this causes a warning: drivers/media/platform/samsung/s5p-mfc/s5p_mfc_cmd_v6.c:45:7: error: variable 'h2r_args' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 45 | &h2r_args); | ^~~~~~~~ Just remove this for simplicity. Since the function is also called through a callback, this does require adding a trivial wrapper with the correct prototype. Fixes: f96f3cfa0bb8 ("[media] s5p-mfc: Update MFC v4l2 driver to support MFC6.x") Cc: stable@vger.kernel.org Signed-off-by: Arnd Bergmann Signed-off-by: Hans Verkuil Signed-off-by: Sasha Levin --- .../platform/samsung/s5p-mfc/s5p_mfc_cmd_v6.c | 35 +++++++------------ 1 file changed, 13 insertions(+), 22 deletions(-) diff --git a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_cmd_v6.c b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_cmd_v6.c index 47bc3014b5d8b..f7c682fca6459 100644 --- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_cmd_v6.c +++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_cmd_v6.c @@ -14,8 +14,7 @@ #include "s5p_mfc_opr.h" #include "s5p_mfc_cmd_v6.h" -static int s5p_mfc_cmd_host2risc_v6(struct s5p_mfc_dev *dev, int cmd, - const struct s5p_mfc_cmd_args *args) +static int s5p_mfc_cmd_host2risc_v6(struct s5p_mfc_dev *dev, int cmd) { mfc_debug(2, "Issue the command: %d\n", cmd); @@ -31,7 +30,6 @@ static int s5p_mfc_cmd_host2risc_v6(struct s5p_mfc_dev *dev, int cmd, static int s5p_mfc_sys_init_cmd_v6(struct s5p_mfc_dev *dev) { - struct s5p_mfc_cmd_args h2r_args; const struct s5p_mfc_buf_size_v6 *buf_size = dev->variant->buf_size->priv; int ret; @@ -41,33 +39,23 @@ static int s5p_mfc_sys_init_cmd_v6(struct s5p_mfc_dev *dev) mfc_write(dev, dev->ctx_buf.dma, S5P_FIMV_CONTEXT_MEM_ADDR_V6); mfc_write(dev, buf_size->dev_ctx, S5P_FIMV_CONTEXT_MEM_SIZE_V6); - return s5p_mfc_cmd_host2risc_v6(dev, S5P_FIMV_H2R_CMD_SYS_INIT_V6, - &h2r_args); + return s5p_mfc_cmd_host2risc_v6(dev, S5P_FIMV_H2R_CMD_SYS_INIT_V6); } static int s5p_mfc_sleep_cmd_v6(struct s5p_mfc_dev *dev) { - struct s5p_mfc_cmd_args h2r_args; - - memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args)); - return s5p_mfc_cmd_host2risc_v6(dev, S5P_FIMV_H2R_CMD_SLEEP_V6, - &h2r_args); + return s5p_mfc_cmd_host2risc_v6(dev, S5P_FIMV_H2R_CMD_SLEEP_V6); } static int s5p_mfc_wakeup_cmd_v6(struct s5p_mfc_dev *dev) { - struct s5p_mfc_cmd_args h2r_args; - - memset(&h2r_args, 0, sizeof(struct s5p_mfc_cmd_args)); - return s5p_mfc_cmd_host2risc_v6(dev, S5P_FIMV_H2R_CMD_WAKEUP_V6, - &h2r_args); + return s5p_mfc_cmd_host2risc_v6(dev, S5P_FIMV_H2R_CMD_WAKEUP_V6); } /* Open a new instance and get its number */ static int s5p_mfc_open_inst_cmd_v6(struct s5p_mfc_ctx *ctx) { struct s5p_mfc_dev *dev = ctx->dev; - struct s5p_mfc_cmd_args h2r_args; int codec_type; mfc_debug(2, "Requested codec mode: %d\n", ctx->codec_mode); @@ -129,23 +117,20 @@ static int s5p_mfc_open_inst_cmd_v6(struct s5p_mfc_ctx *ctx) mfc_write(dev, ctx->ctx.size, S5P_FIMV_CONTEXT_MEM_SIZE_V6); mfc_write(dev, 0, S5P_FIMV_D_CRC_CTRL_V6); /* no crc */ - return s5p_mfc_cmd_host2risc_v6(dev, S5P_FIMV_H2R_CMD_OPEN_INSTANCE_V6, - &h2r_args); + return s5p_mfc_cmd_host2risc_v6(dev, S5P_FIMV_H2R_CMD_OPEN_INSTANCE_V6); } /* Close instance */ static int s5p_mfc_close_inst_cmd_v6(struct s5p_mfc_ctx *ctx) { struct s5p_mfc_dev *dev = ctx->dev; - struct s5p_mfc_cmd_args h2r_args; int ret = 0; dev->curr_ctx = ctx->num; if (ctx->state != MFCINST_FREE) { mfc_write(dev, ctx->inst_no, S5P_FIMV_INSTANCE_ID_V6); ret = s5p_mfc_cmd_host2risc_v6(dev, - S5P_FIMV_H2R_CMD_CLOSE_INSTANCE_V6, - &h2r_args); + S5P_FIMV_H2R_CMD_CLOSE_INSTANCE_V6); } else { ret = -EINVAL; } @@ -153,9 +138,15 @@ static int s5p_mfc_close_inst_cmd_v6(struct s5p_mfc_ctx *ctx) return ret; } +static int s5p_mfc_cmd_host2risc_v6_args(struct s5p_mfc_dev *dev, int cmd, + const struct s5p_mfc_cmd_args *ignored) +{ + return s5p_mfc_cmd_host2risc_v6(dev, cmd); +} + /* Initialize cmd function pointers for MFC v6 */ static const struct s5p_mfc_hw_cmds s5p_mfc_cmds_v6 = { - .cmd_host2risc = s5p_mfc_cmd_host2risc_v6, + .cmd_host2risc = s5p_mfc_cmd_host2risc_v6_args, .sys_init_cmd = s5p_mfc_sys_init_cmd_v6, .sleep_cmd = s5p_mfc_sleep_cmd_v6, .wakeup_cmd = s5p_mfc_wakeup_cmd_v6, -- 2.51.0