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 AFD751494DB; Thu, 5 Sep 2024 10:04:46 +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=1725530686; cv=none; b=Wvlrb9h36Id8E8EVw0F0GIkD/jdW8Gw4sfGxcHRNZVugdKBgbhaGJN8mpgrfjQYal1rU68rYMIB+yb3rKofxmtZ79m6lsw+VbRp9s74wyjQv4RqBYiIAVf8gkKC/Na2st2+hHZW+6xF7F8GLh+uQntEvAR4GTsvpUvqYb5ycRDY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725530686; c=relaxed/simple; bh=THWQaUU66EdXipGvEMjmkf8B8uV4nP3AQFI0YH5XJKs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ircKcvVg1w2czqbGlqP61ak9AFJXq4mIKZBOWj56dk8qdmZwAraaNUQCjF34KcPouotJdkCYBeKnDSXiaCUIVJ3Ed9/xKzQitJvcpIN/VW7muGpTe25rpvgVPxwj9WC84yZsf5SivXuZXjhzOHTiQwK2JVEpCCVdLM0GeV+Pggk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LYvpVak+; 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="LYvpVak+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2060FC4CEC3; Thu, 5 Sep 2024 10:04:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1725530686; bh=THWQaUU66EdXipGvEMjmkf8B8uV4nP3AQFI0YH5XJKs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LYvpVak+vx1+y8UNBAKjY5ptDP/u7kGlP/+Wd0tenrNpQe+X3xDvH5sJ2F/O8fONq 1Wdf/x1qmCu+UVF+J1yb/OZb+64NrgSfms+QeDslK+F5xiSwqCXU+83DwR4/UAFv5o +ulU+XiFT7oyu4QP90yS6rvfYe/ynCAu4ed10SWs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Harry Wentland , Hamza Mahfooz , Alex Hung , Alex Deucher , Sasha Levin Subject: [PATCH 6.1 092/101] drm/amd/display: Skip wbscl_set_scaler_filter if filter is null Date: Thu, 5 Sep 2024 11:42:04 +0200 Message-ID: <20240905093719.724551589@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240905093716.075835938@linuxfoundation.org> References: <20240905093716.075835938@linuxfoundation.org> User-Agent: quilt/0.67 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 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Hung [ Upstream commit c4d31653c03b90e51515b1380115d1aedad925dd ] Callers can pass null in filter (i.e. from returned from the function wbscl_get_filter_coeffs_16p) and a null check is added to ensure that is not the case. This fixes 4 NULL_RETURNS issues reported by Coverity. Reviewed-by: Harry Wentland Acked-by: Hamza Mahfooz Signed-off-by: Alex Hung Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c index 994fb732a7cb..a0d437f0ce2b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c @@ -690,6 +690,9 @@ static void wbscl_set_scaler_filter( int pair; uint16_t odd_coef, even_coef; + if (!filter) + return; + for (phase = 0; phase < (NUM_PHASES / 2 + 1); phase++) { for (pair = 0; pair < tap_pairs; pair++) { even_coef = filter[phase * taps + 2 * pair]; -- 2.43.0