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 7F4451F7541; Sun, 1 Mar 2026 01:15:13 +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=1772327713; cv=none; b=sxX7/T5UGSJ9//upnviVYevaJRabxuXnzKvOo1Fb0tYCjlvup2S3Xpd+GPATkyxCER3jfa50E9a+ptBd9Q8ZCf3hyxJXx2pNOvoHfHLtf9qoTb8x4wdQSE0CxfPHMzxC5M7/REyjpI272rT0bEpUl624YKbJuiakfnyE/gpEYrE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772327713; c=relaxed/simple; bh=TzfHRjikC4mXJxw70nHiI3sTzBTXHcO+bZfXpx2LNN4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=TuxaueZpbJyK7pe51NXgiJqdPVrJzLi+UkCCN05lgTiC0ylD1gm3AJd14sm0CGjBSVYulCdqEW6WcD30yvKa4A3MOLFnnyp6TH0wtkZzWQlMClD38nQYAMX1iK4yq4NBExGi8eL3GvRPD1HIP7qC400JkJZJ5tpPbUnHSRcLe84= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AiuQGxsR; 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="AiuQGxsR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 43FD6C19421; Sun, 1 Mar 2026 01:15:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772327713; bh=TzfHRjikC4mXJxw70nHiI3sTzBTXHcO+bZfXpx2LNN4=; h=From:To:Cc:Subject:Date:From; b=AiuQGxsRCZg0oJfOV35WUubgio+51vBxqANQq2p7lNL9zf5NHMG7hG1YTL+QHvgjP gBjgl2JcVrZRRaeEkqESHaJuPMVdnDvZHbZ6TLeITaIukj8uuJFrTfNZbD9pi0zUSd bhYt2uV3c8S4HX7f13PM/JM+yP5H20Lo19uPVgUBBmagc3oeAEilXubw1JeBYT1Dp1 8enhFiA6Dz+zeJFa/cWtrTZfhEGpz4SK1bb4vS7kz7s5/cZ2ja3DlnPk3dQpSJSsHi UHPHeWF4taGfJFDwgN86JrHMotajBKDUHgujwfzbDlF01LYqPx3HSbSxH127EpMJQu SryZSdf1DmX8w== From: Sasha Levin To: stable@vger.kernel.org, s-vadapalli@ti.com Cc: kernel test robot , Arnd Bergmann , Manivannan Sadhasivam , linux-omap@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: FAILED: Patch "PCI: j721e: Add config guards for Cadence Host and Endpoint library APIs" failed to apply to 6.18-stable tree Date: Sat, 28 Feb 2026 20:15:10 -0500 Message-ID: <20260301011511.1668175-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.18-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 4b361b1e92be255ff923453fe8db74086cc7cf66 Mon Sep 17 00:00:00 2001 From: Siddharth Vadapalli Date: Mon, 17 Nov 2025 17:02:06 +0530 Subject: [PATCH] PCI: j721e: Add config guards for Cadence Host and Endpoint library APIs Commit under Fixes enabled loadable module support for the driver under the assumption that it shall be the sole user of the Cadence Host and Endpoint library APIs. This assumption guarantees that we won't end up in a case where the driver is built-in and the library support is built as a loadable module. With the introduction of [1], this assumption is no longer valid. The SG2042 driver could be built as a loadable module, implying that the Cadence Host library is also selected as a loadable module. However, the pci-j721e.c driver could be built-in as indicated by CONFIG_PCI_J721E=y due to which the Cadence Endpoint library is built-in. Despite the library drivers being built as specified by their respective consumers, since the 'pci-j721e.c' driver has references to the Cadence Host library APIs as well, we run into a build error as reported at [0]. Fix this by adding config guards as a temporary workaround. The proper fix is to split the 'pci-j721e.c' driver into independent Host and Endpoint drivers as aligned at [2]. [0]: https://lore.kernel.org/r/202511111705.MZ7ls8Hm-lkp@intel.com/ [1]: commit 1c72774df028 ("PCI: sg2042: Add Sophgo SG2042 PCIe driver") [2]: https://lore.kernel.org/r/37f6f8ce-12b2-44ee-a94c-f21b29c98821@app.fastmail.com/ Fixes: a2790bf81f0f ("PCI: j721e: Add support to build as a loadable module") Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202511111705.MZ7ls8Hm-lkp@intel.com/ Suggested-by: Arnd Bergmann Signed-off-by: Siddharth Vadapalli Signed-off-by: Manivannan Sadhasivam Reviewed-by: Arnd Bergmann Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20251117113246.1460644-1-s-vadapalli@ti.com --- drivers/pci/controller/cadence/pci-j721e.c | 41 +++++++++++++--------- 1 file changed, 25 insertions(+), 16 deletions(-) diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c index ecd1b03124006..6f2501479c701 100644 --- a/drivers/pci/controller/cadence/pci-j721e.c +++ b/drivers/pci/controller/cadence/pci-j721e.c @@ -620,9 +620,11 @@ static int j721e_pcie_probe(struct platform_device *pdev) gpiod_set_value_cansleep(pcie->reset_gpio, 1); } - ret = cdns_pcie_host_setup(rc); - if (ret < 0) - goto err_pcie_setup; + if (IS_ENABLED(CONFIG_PCI_J721E_HOST)) { + ret = cdns_pcie_host_setup(rc); + if (ret < 0) + goto err_pcie_setup; + } break; case PCI_MODE_EP: @@ -632,9 +634,11 @@ static int j721e_pcie_probe(struct platform_device *pdev) goto err_get_sync; } - ret = cdns_pcie_ep_setup(ep); - if (ret < 0) - goto err_pcie_setup; + if (IS_ENABLED(CONFIG_PCI_J721E_EP)) { + ret = cdns_pcie_ep_setup(ep); + if (ret < 0) + goto err_pcie_setup; + } break; } @@ -659,10 +663,11 @@ static void j721e_pcie_remove(struct platform_device *pdev) struct cdns_pcie_ep *ep; struct cdns_pcie_rc *rc; - if (pcie->mode == PCI_MODE_RC) { + if (IS_ENABLED(CONFIG_PCI_J721E_HOST) && + pcie->mode == PCI_MODE_RC) { rc = container_of(cdns_pcie, struct cdns_pcie_rc, pcie); cdns_pcie_host_disable(rc); - } else { + } else if (IS_ENABLED(CONFIG_PCI_J721E_EP)) { ep = container_of(cdns_pcie, struct cdns_pcie_ep, pcie); cdns_pcie_ep_disable(ep); } @@ -728,10 +733,12 @@ static int j721e_pcie_resume_noirq(struct device *dev) gpiod_set_value_cansleep(pcie->reset_gpio, 1); } - ret = cdns_pcie_host_link_setup(rc); - if (ret < 0) { - clk_disable_unprepare(pcie->refclk); - return ret; + if (IS_ENABLED(CONFIG_PCI_J721E_HOST)) { + ret = cdns_pcie_host_link_setup(rc); + if (ret < 0) { + clk_disable_unprepare(pcie->refclk); + return ret; + } } /* @@ -741,10 +748,12 @@ static int j721e_pcie_resume_noirq(struct device *dev) for (enum cdns_pcie_rp_bar bar = RP_BAR0; bar <= RP_NO_BAR; bar++) rc->avail_ib_bar[bar] = true; - ret = cdns_pcie_host_init(rc); - if (ret) { - clk_disable_unprepare(pcie->refclk); - return ret; + if (IS_ENABLED(CONFIG_PCI_J721E_HOST)) { + ret = cdns_pcie_host_init(rc); + if (ret) { + clk_disable_unprepare(pcie->refclk); + return ret; + } } } -- 2.51.0