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 674A32F47B4; Mon, 5 May 2025 23:15:56 +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=1746486956; cv=none; b=Oy92w5R+8T9osSjxYzG/Ilio6WtvZBkyOtIdEXG6vJwQhqIjmAiEKHBI213P0K+mfc9utfV2zu0h4wyVrjHmTk64ZubnxGRR6506lmSFcmbyn5KOYG7cP9nJ7OwVkff61ea9XQDaC55TXbHp6zvIjXfFwk8SmqngmK4Dr1jD3gs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746486956; c=relaxed/simple; bh=/+aGD+5R3Vy0mhYFWIR+sj/H8L/mSKMlCfXmIIdwlVg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=czKNB5BSA2CSiwBu+IkkVIV/0/EAO7EnJZFwNbBmD8AZl5BJ0IiaCs9cc8Ju1LuRRcQlE56jQd2vO8XZq3n6Hd6c/J1WY2sXIk+UhwAeB/lmA7Nej0YkvcGeQZVRSfiU6Ww7i3ThFFK972LX39+0QjWVFACprsVLN0/TxUw9KYY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=F02yCfX5; 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="F02yCfX5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 33049C4CEF1; Mon, 5 May 2025 23:15:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746486956; bh=/+aGD+5R3Vy0mhYFWIR+sj/H8L/mSKMlCfXmIIdwlVg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F02yCfX5mtPkwQ1NjNqcJT/Ew3+LdWd5jm3//ZQtPdDP/WaOOX2NFmmTuS9ITlojW wD8bCXMSP36kjARCJGLRiJqAViTIFdmzBt6IK+y3fPELXtJdzwbolf4QA/gZnRAyFz iK4iOTqweTVJMSLyys+CS/OIJTXxVYWnLp2nkK/DNy97bM627+NCDa8mgy3BzaWufG AeUoC+TIqaapd2X/F6LPtbEh3MaNqu758B5Yw0Rii0xk341WirHyWnMdK2kGx2fVbM rRLmijuXNcH4fCjt2qXkOf5QgfqPKb+brz/h3QlcDGFsGMHKDCwpbALagUYzm6qn0B g6ZhEyh7/6kiw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kuhanh Murugasen Krishnan , Ang Tien Sung , Xu Yilun , Xu Yilun , Sasha Levin , mdf@kernel.org, hao.wu@intel.com, linux-fpga@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 078/153] fpga: altera-cvp: Increase credit timeout Date: Mon, 5 May 2025 19:12:05 -0400 Message-Id: <20250505231320.2695319-78-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505231320.2695319-1-sashal@kernel.org> References: <20250505231320.2695319-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-fpga@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.181 Content-Transfer-Encoding: 8bit From: Kuhanh Murugasen Krishnan [ Upstream commit 0f05886a40fdc55016ba4d9ae0a9c41f8312f15b ] Increase the timeout for SDM (Secure device manager) data credits from 20ms to 40ms. Internal stress tests running at 500 loops failed with the current timeout of 20ms. At the start of a FPGA configuration, the CVP host driver reads the transmit credits from SDM. It then sends bitstream FPGA data to SDM based on the total credits. Each credit allows the CVP host driver to send 4kBytes of data. There are situations whereby, the SDM did not respond in time during testing. Signed-off-by: Ang Tien Sung Signed-off-by: Kuhanh Murugasen Krishnan Acked-by: Xu Yilun Link: https://lore.kernel.org/r/20250212221249.2715929-1-tien.sung.ang@intel.com Signed-off-by: Xu Yilun Signed-off-by: Sasha Levin --- drivers/fpga/altera-cvp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c index ccf4546eff297..34254911c01b1 100644 --- a/drivers/fpga/altera-cvp.c +++ b/drivers/fpga/altera-cvp.c @@ -52,7 +52,7 @@ /* V2 Defines */ #define VSE_CVP_TX_CREDITS 0x49 /* 8bit */ -#define V2_CREDIT_TIMEOUT_US 20000 +#define V2_CREDIT_TIMEOUT_US 40000 #define V2_CHECK_CREDIT_US 10 #define V2_POLL_TIMEOUT_US 1000000 #define V2_USER_TIMEOUT_US 500000 -- 2.39.5