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 D27CF187FFA; Thu, 1 Aug 2024 00:14:42 +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=1722471282; cv=none; b=UV9buH5F0+pYhVvvff7MWBlcJF0Lnd23Rr+W3d25Z7F3ffp+jCrUAnGlFpHwooTJverfvkzqLQQpdEZZc81Ykp+N1DwdHcjjzeVybkP1m55ZM9QBtyvremPA6IQRJRWK6E7G11vJ3lZOSmwdR3xmg1ysHuRL2mOkvq/WTKZA7IM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722471282; c=relaxed/simple; bh=Bc5Taipso1fqVciO7ePiE9y5gkfK5eXG07pjnUEMhwA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WY9VsZJAsnPLi68W6yLCkEoZKq820dblDO0uFgU981myAtEgdIROpzB7gqlH/VlVPxKuBOHbZ9OgTaAg9QE+YPAEgXZC8C9DsG1na+8ThnvlEHLnjtCPzJM73fH0RDGZdr0eWtwketR/NRNaqTLqo1gHa4PateViyGAR/3CJ97w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IZv2f3KF; 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="IZv2f3KF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4107BC32786; Thu, 1 Aug 2024 00:14:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722471282; bh=Bc5Taipso1fqVciO7ePiE9y5gkfK5eXG07pjnUEMhwA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IZv2f3KFRNBeDj4j/w0+aNq5NywyEiivFO1MRFkIwEtw+mrc+3GmaWNnpbsAXh3Re pO+VVMIZM7ySj69/IAXJDlaDViFjdym0KZaZHFzivJLoax13d+lz+wQq59yD3/yjXp wLW6JLLRu1WRk+6hI+hDoLUltLMd/UmbGrw76cGyo83SaT1mcA8DD1ZWuSXklAUk50 t5EHLUpn8MB5LKVVfUPcAdYHuhg7FxNIpUQkLGFWeoEhZNRNG0e8dNGqYPjsGA84di NJI8F6m533aFC4UVcFs9Zo47XWkuK8LuqMozRkiZ3Lnka5MCK6w8TgMuX0CVSFcjEw MV8EbhopnecFg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: AngeloGioacchino Del Regno , Mathieu Poirier , Sasha Levin , andersson@kernel.org, matthias.bgg@gmail.com, linux-remoteproc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH AUTOSEL 6.10 057/121] remoteproc: mediatek: Zero out only remaining bytes of IPI buffer Date: Wed, 31 Jul 2024 19:59:55 -0400 Message-ID: <20240801000834.3930818-57-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240801000834.3930818-1-sashal@kernel.org> References: <20240801000834.3930818-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.10.2 Content-Transfer-Encoding: 8bit From: AngeloGioacchino Del Regno [ Upstream commit 9dbd9962cfe56d210be5232349851420b5f9c8f6 ] In scp_ipi_handler(), instead of zeroing out the entire shared buffer, which may be as large as 600 bytes, overwrite it with the received data, then zero out only the remaining bytes. Signed-off-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20240520112724.139945-1-angelogioacchino.delregno@collabora.com Signed-off-by: Mathieu Poirier Signed-off-by: Sasha Levin --- drivers/remoteproc/mtk_scp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index b8498772dba17..b885a9a041e48 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -117,8 +117,8 @@ static void scp_ipi_handler(struct mtk_scp *scp) return; } - memset(scp->share_buf, 0, scp_sizes->ipi_share_buffer_size); memcpy_fromio(scp->share_buf, &rcv_obj->share_buf, len); + memset(&scp->share_buf[len], 0, scp_sizes->ipi_share_buffer_size - len); handler(scp->share_buf, len, ipi_desc[id].priv); scp_ipi_unlock(scp, id); -- 2.43.0