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 1AC10354AE7 for ; Fri, 17 Oct 2025 23:18:13 +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=1760743093; cv=none; b=K/TTItGhEJGSeSw2kAO+dA6N2IOfK+tLg0BSehj2VziaQB7c7D10o4DwRW6eEQAoml0VfNstMTmRqjIS1RON6B9BHH8ac/qu1VsFQF34lJGV+U5W67Aahk/s0UEQAhdMnQTKJxCqbIlP+O5f2/SBnd/TlfeEDPXWhXTxW81UtMU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760743093; c=relaxed/simple; bh=FejHJB5bTLCKMaVE2Q8+6k/9eSyGBUHoqQJnAkwAgEs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EF7fqrPWvrZeMlntasHot5LwItkzejyR/D+X+oE3O8ULCKd5XUzZut12iPiHc+bxOsDPIbSce9f+7udFHbj3umLyejwP90bTpJPTUuIcH9sR5OpAKltwieNmrowdHDoB5QnjTdiLl2HDIVnjYihUBf9ZdK4aMiMMqJTtYhbDhMo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=oozWtpfQ; 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="oozWtpfQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5E72AC4CEE7; Fri, 17 Oct 2025 23:18:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760743092; bh=FejHJB5bTLCKMaVE2Q8+6k/9eSyGBUHoqQJnAkwAgEs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oozWtpfQm8bLOCOdjmrS6nmMjuSi8vdsAXK1k3ynDkS3xS8BQZGOPGbph1dZaaTIe rmEc7BBzO11IE66YykzEc+jIqpabyrm2sX+PpAxeTwCOeY2wdapdKc9R0Jg5VpG65X jo6RB+W/eC7IxboL4n7VRbmDrYXLCo8s2gZfpVuNsHvej2dOUMBsnzxVN/If2Si+l2 zPR0mEGTwf7eANXIcmv3WBPuQ9R4WUxYgWaJSZ/UrLNLIATdix+7xdcgmrl+elA2I3 0eMz/Nmd1V6gNG5xm7webcBUpjbYO0hzdeqetogsMtmqxua+rBOuZiV3DSwN+S5Vpu iErwQ8zcdWCfg== From: Sasha Levin To: stable@vger.kernel.org Cc: Arnd Bergmann , Hans Verkuil , Sasha Levin Subject: [PATCH 5.10.y] media: s5p-mfc: remove an unused/uninitialized variable Date: Fri, 17 Oct 2025 19:18:09 -0400 Message-ID: <20251017231809.29564-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <2025101647-myspace-pavement-96d9@gregkh> References: <2025101647-myspace-pavement-96d9@gregkh> 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 [ Adjust context ] Signed-off-by: Sasha Levin --- .../media/platform/s5p-mfc/s5p_mfc_cmd_v6.c | 35 +++++++------------ 1 file changed, 13 insertions(+), 22 deletions(-) diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v6.c b/drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v6.c index 1f42130cc8658..23c47d92c0717 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_cmd_v6.c +++ b/drivers/media/platform/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, - 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; 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, + struct s5p_mfc_cmd_args *ignored) +{ + return s5p_mfc_cmd_host2risc_v6(dev, cmd); +} + /* Initialize cmd function pointers for MFC v6 */ static 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