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 005506DD15; Sun, 28 Jan 2024 16:14:44 +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=1706458485; cv=none; b=Bo/A3q+0zqFBvDgk724q4uq3ZWMr4aIjkmmPROBBXqnrH25EJa2KbZBYcNZMzefjaoFTLeT+HtEhbikG4uc/eSXTUVpG2wQXMg6d561gRgS1nnILumR0J2qZHwifeSwvqOs87vKrO67mgT6BZpcL9zd+7mG/iT9j5cBOCW2ZgVk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706458485; c=relaxed/simple; bh=IpK14T6a2JY3qyCdxkZ5SFrzyR3FJ/x2m+Xk2BjcEmM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=IUeytbVpx2/j7B5UPu/AdTTsuw90iDoegSGrDZ64ghx0onCGlwL3HRviUaNpemaov4DYoNs1hgOSqfM3cisXpm0/UxK0YIR0SQCPRWrpHwNn5UziF42ZUfi2eV11YNEpKYg+NGR/pJFpjhKGpmUHPCe5a4i3sp12mpy8c4WYaWM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KO0XW7jq; 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="KO0XW7jq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BCEBDC433F1; Sun, 28 Jan 2024 16:14:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706458484; bh=IpK14T6a2JY3qyCdxkZ5SFrzyR3FJ/x2m+Xk2BjcEmM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KO0XW7jqw93EJKcmcjzQsUpU0CzDoOrGNA/vg8LQUoJ2l/EFHu6r6a4s5poZSGghW +Zo190krE+0Ft0QsM2hDdBWQ5pwWwFdIhHoNHldneByJxnP8mvEVd8yFIo2x9XqDVl BS7ZvAsDKVHQihQfFaxju1BcCibT63jRY3xQEpD0HAKXE3/hb/gWD5aErinVsrrzmZ 9T244DQQr/k0NOiB8aApoKamoNa567Xok005M/m6okKfkU24A2ftf6jeK6kvUTeXlk vIVBUfdbCZ95G8loO0HJS3sFDxUtpGfGrSpiEvJfxyVcgXIXGkMFA4Maw2D+99W0Yg wQbtK+IvGHONQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Bjorn Helgaas , Sasha Levin , linux-pci@vger.kernel.org Subject: [PATCH AUTOSEL 6.1 11/27] PCI: Fix 64GT/s effective data rate calculation Date: Sun, 28 Jan 2024 11:13:56 -0500 Message-ID: <20240128161424.203600-11-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240128161424.203600-1-sashal@kernel.org> References: <20240128161424.203600-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.1.75 Content-Transfer-Encoding: 8bit From: Ilpo Järvinen [ Upstream commit ac4f1897fa5433a1b07a625503a91b6aa9d7e643 ] Unlike the lower rates, the PCIe 64GT/s Data Rate uses 1b/1b encoding, not 128b/130b (PCIe r6.1 sec 1.2, Table 1-1). Correct the PCIE_SPEED2MBS_ENC() calculation to reflect that. Link: https://lore.kernel.org/r/20240102172701.65501-1-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen Signed-off-by: Bjorn Helgaas Signed-off-by: Sasha Levin --- drivers/pci/pci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index ed6d75d138c7..e1d02b7c6029 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -274,7 +274,7 @@ void pci_bus_put(struct pci_bus *bus); /* PCIe speed to Mb/s reduced by encoding overhead */ #define PCIE_SPEED2MBS_ENC(speed) \ - ((speed) == PCIE_SPEED_64_0GT ? 64000*128/130 : \ + ((speed) == PCIE_SPEED_64_0GT ? 64000*1/1 : \ (speed) == PCIE_SPEED_32_0GT ? 32000*128/130 : \ (speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \ (speed) == PCIE_SPEED_8_0GT ? 8000*128/130 : \ -- 2.43.0