From nobody Mon Feb 9 01:01:13 2026 Received: from m16.mail.163.com (m16.mail.163.com [220.197.31.5]) (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 6A5AE34D396; Sat, 1 Nov 2025 16:16:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.31.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762013779; cv=none; b=jZwwW2NYl6+eEHH84DKuJ6XMInHIFiop1ZZ5Aojtc7+oSWa3GA+m6ONmHRkMsIfO1o9H57KvKElcBZ1fIKPZ2yBdmI/geIaui+4WeSMuV6xZOOEUioVcgfIA+JzsPP4/oKsQhF9YeebcNEG2rYgeWS5FnGcCsFFdO2DjA9JAkPU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762013779; c=relaxed/simple; bh=XoO5+IbnE6sXWF/C3GHFRnBv/TwY7itiqHDwdJ+uuHI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=tnRYtbsuQIHQshs7QfauaA3VH6zLs1/CrKniseZkkHvvM5P9w6hd4Br46QwchlKI0dtRFjM02CFVzmQtVe9Bn0dqs9/rBz/C4vJNtmKg+jeGsb2s/HHky8O9mzaFKVHWxKSCCzxS1oeJ5zlHNJMbAd9s4TTc8G0j/vUYvwpBjvo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=MFxXnYMe; arc=none smtp.client-ip=220.197.31.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="MFxXnYMe" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=pQ VU6nxZUMfUMAJNSV13l+ou9BHpN2WCNClKQeJz+pw=; b=MFxXnYMeloGTf04oDM Vcq3Ong0ln2HRxvTp9mQab4fNR9g9qKYwhO1Qo/z2V+TzVBUYfU+W/nN6E17SQA9 EQQ7Wr3nVqL52Fi+dAI+ceb/4UCsG/xOunXy6S0sBLbRAygCaFgn3s4ng3DTOJqG X8lU0aqFxAsRuUd13xIkZ4HPo= Received: from zhb.. (unknown []) by gzga-smtp-mtada-g1-4 (Coremail) with SMTP id _____wDXL4nTLwZp3qOtAw--.844S3; Sun, 02 Nov 2025 00:05:40 +0800 (CST) From: Hans Zhang <18255117159@163.com> To: bhelgaas@google.com, helgaas@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Hans Zhang <18255117159@163.com> Subject: [PATCH v4 1/4] PCI: Add macro for secondary bus reset delay Date: Sun, 2 Nov 2025 00:05:35 +0800 Message-Id: <20251101160538.10055-2-18255117159@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251101160538.10055-1-18255117159@163.com> References: <20251101160538.10055-1-18255117159@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wDXL4nTLwZp3qOtAw--.844S3 X-Coremail-Antispam: 1Uf129KBjvJXoW7KrWxCr4rCF45KryfGF4fuFg_yoW8XF15pF Z8KFy8Ar1rXay5ZrZ5Aa18u34rG3ZI9FWjkF48K3sa93W3CFyDCay3KFW5WrnFqrWxXr13 Aas8C34UJFW5trDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0z_mii-UUUUU= X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/1tbiFRH4o2kGJKfhJAAAs2 Content-Type: text/plain; charset="utf-8" Add PCI_T_RST_SEC_BUS_DELAY_MS macro for the secondary bus reset delay value according to PCIe r7.0 spec, section 7.5.1.3.13. Signed-off-by: Hans Zhang <18255117159@163.com> --- drivers/pci/pci.c | 7 ++----- drivers/pci/pci.h | 3 +++ 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index b14dd064006c..86449f2d627b 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -4912,11 +4912,8 @@ void pci_reset_secondary_bus(struct pci_dev *dev) ctrl |=3D PCI_BRIDGE_CTL_BUS_RESET; pci_write_config_word(dev, PCI_BRIDGE_CONTROL, ctrl); =20 - /* - * PCI spec v3.0 7.6.4.2 requires minimum Trst of 1ms. Double - * this to 2ms to ensure that we meet the minimum requirement. - */ - msleep(2); + /* Double this to 2ms to ensure that we meet the minimum requirement */ + msleep(2 * PCI_T_RST_SEC_BUS_DELAY_MS); =20 ctrl &=3D ~PCI_BRIDGE_CTL_BUS_RESET; pci_write_config_word(dev, PCI_BRIDGE_CONTROL, ctrl); diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 4492b809094b..31f975619774 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -63,6 +63,9 @@ struct pcie_tlp_log; #define PCIE_LINK_WAIT_MAX_RETRIES 10 #define PCIE_LINK_WAIT_SLEEP_MS 90 =20 +/* PCIe r7.0, sec 7.5.1.3.13, requires minimum Trst of 1ms */ +#define PCI_T_RST_SEC_BUS_DELAY_MS 1 + /* Message Routing (r[2:0]); PCIe r6.0, sec 2.2.8 */ #define PCIE_MSG_TYPE_R_RC 0 #define PCIE_MSG_TYPE_R_ADDR 1 --=20 2.34.1 From nobody Mon Feb 9 01:01:13 2026 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.4]) (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 280B21DB15F; Sat, 1 Nov 2025 16:06:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.4 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762013166; cv=none; b=uCRswh3D64T8H/godcNBxP38MCrVgGJHjs5IwZaJUh/m0QlmMm65HkrYhvrnyBtIojZzWXlucm821k9yAEGuluYrAZSrcz457mwqIdzrI3oXryY122j8Fi2Elg9pUHk7pZSsPGB5890lYcStr8JGTrAh7K7ZU6shQZrq+rW6u+c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762013166; c=relaxed/simple; bh=oySVf4RfPa2vXHPErjAr0CU4P6G5QgDj6kyzEyfWp7M=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=exqjYOGDaUISdcHHkxbIv7BcTWveVQJlOYIZrjGXABbI+1CzwlecvvM5+X5trSVnszf+V0LsJzVwwbPQkqLnhUmfPL5RmtO0b8hzVgBSyDYb4dDb+YQbrdZGIP2LTsDO+T3HKkKrK8zC/Tsvb1JDaByM9j9VAhdyersfqQ8uYos= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=XUFeZZ7w; arc=none smtp.client-ip=117.135.210.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="XUFeZZ7w" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=nq kIChBp/koBb9FvVZulRsypHQj7vJiGKJ2pQmxhvOQ=; b=XUFeZZ7wr9v/hCYM5N Jtq77obhK/piFtTg0b3MJI4WryoPGg1/9AbtB9ShNujz4L1/BPberIszb0eop7k3 ilHqjrSkiNvkFISyu7m0WLWVHNp4s7O2jf1O1O9oaXWd8RbHf52QcpY4U5OPhd6e IaFUhhDFPcMvsecoCDcruBNu4= Received: from zhb.. (unknown []) by gzga-smtp-mtada-g1-4 (Coremail) with SMTP id _____wDXL4nTLwZp3qOtAw--.844S4; Sun, 02 Nov 2025 00:05:41 +0800 (CST) From: Hans Zhang <18255117159@163.com> To: bhelgaas@google.com, helgaas@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Hans Zhang <18255117159@163.com> Subject: [PATCH v4 2/4] PCI: Add macro for link status check delay Date: Sun, 2 Nov 2025 00:05:36 +0800 Message-Id: <20251101160538.10055-3-18255117159@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251101160538.10055-1-18255117159@163.com> References: <20251101160538.10055-1-18255117159@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wDXL4nTLwZp3qOtAw--.844S4 X-Coremail-Antispam: 1Uf129KBjvdXoW7GF1UKw1xur1fAFWkKw17ZFb_yoWDJrX_u3 42vFWxWrW0kF9xA3y2kr1fZrZ293ZxWF4xuFn3tFySyFy7Gry5uryqvrn8Ja13WayrJF1q q3srKF4Fkwn2kjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7xREmiiDUUUUU== X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbCwxXcgGkGL9Xu6AAA3Z Content-Type: text/plain; charset="utf-8" Add PCIE_LINK_STATUS_CHECK_MS macro for link status check delay. Signed-off-by: Hans Zhang <18255117159@163.com> --- drivers/pci/pci.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 86449f2d627b..b57d8e4c3a48 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -77,6 +77,8 @@ struct pci_pme_device { */ #define PCIE_RESET_READY_POLL_MS 60000 /* msec */ =20 +#define PCIE_LINK_STATUS_CHECK_MS 1 + static void pci_dev_d3_sleep(struct pci_dev *dev) { unsigned int delay_ms =3D max(dev->d3hot_delay, pci_pm_d3hot_delay); @@ -4632,7 +4634,7 @@ static int pcie_wait_for_link_status(struct pci_dev *= pdev, pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &lnksta); if ((lnksta & lnksta_mask) =3D=3D lnksta_match) return 0; - msleep(1); + msleep(PCIE_LINK_STATUS_CHECK_MS); } while (time_before(jiffies, end_jiffies)); =20 return -ETIMEDOUT; --=20 2.34.1 From nobody Mon Feb 9 01:01:13 2026 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.5]) (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 16DD91494CC; Sat, 1 Nov 2025 16:05:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762013162; cv=none; b=oQtPaunysXszlS93BRWoCwb8elKM4uvN5gIJUlQg6tlVPFnE38jUC55Amu7il2D/XrIKxn4FgNT03Lm/8pnBJRsEehfBSg4nGmht9NQHwOCQ/B2ExhwgI8eCpwyo6tN39lFfDCJ/xjUJrlGm4D4uoG/kjr9gXdAjJ/lo9gQq6Rg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762013162; c=relaxed/simple; bh=Xz4GbbMrxXO/VGD0EMSdSfVU9wYMOZseAX78Xf98CFE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=nPFPT6S9h6TleAdTToS01ql96cyd13u0MqrdgyCwgsSe2oeJm8oLVF15i0flUjZyc1getgk55301dTUyt940aWN9pYA3/F/jIF4cCHbCdADMX4D7NzcZHvHhN07bUTQ5kGoemArdMARcomb9oBUfqCD83kNTCGtGPRV1ucX2c/g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=WHf4live; arc=none smtp.client-ip=117.135.210.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="WHf4live" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=Ad vzvJzLxncRb/7kkrk+KLmis5Xz44JXtV/sPH0U9AQ=; b=WHf4liveF5ip+ckPzc YG2WvcGapo8eYxxe5T3ckincsjL1FUJ8lDZzCK7QRY3TP+aLaze5DQKViOIbdtEb c922f1WHvYQ3ySkhOltzNrVv6NzUgl+B4KACkj0AqRy0LYCaya2Qa8ZlEvF3xHcJ btpqC05ogKQIB3bbhw9ZKmgOk= Received: from zhb.. (unknown []) by gzga-smtp-mtada-g1-4 (Coremail) with SMTP id _____wDXL4nTLwZp3qOtAw--.844S5; Sun, 02 Nov 2025 00:05:41 +0800 (CST) From: Hans Zhang <18255117159@163.com> To: bhelgaas@google.com, helgaas@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Hans Zhang <18255117159@163.com> Subject: [PATCH v4 3/4] PCI: pciehp: Add macros for hotplug operation delays Date: Sun, 2 Nov 2025 00:05:37 +0800 Message-Id: <20251101160538.10055-4-18255117159@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251101160538.10055-1-18255117159@163.com> References: <20251101160538.10055-1-18255117159@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wDXL4nTLwZp3qOtAw--.844S5 X-Coremail-Antispam: 1Uf129KBjvJXoW7trWrZr1ruw17Ar4kJr4UCFg_yoW8JFW7p3 yfArWUtF1rKrs8Cws5Za1DWr98CasxCrZrCrWUu3s3ZF97Aw4DA3WfKa4jqFyfArW5Cr15 WFWrAFy5Ja1UAr7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07UFXdnUUUUU= X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbCwxXcgGkGL9Xu7QAA3c Content-Type: text/plain; charset="utf-8" Add WAIT_PDS_TIMEOUT_MS and POLL_CMD_TIMEOUT_MS macros for hotplug operation delays to improve code readability. Signed-off-by: Hans Zhang <18255117159@163.com> --- drivers/pci/hotplug/pciehp_hpc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_= hpc.c index bcc51b26d03d..15b09c6a8d6b 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -28,6 +28,9 @@ #include "../pci.h" #include "pciehp.h" =20 +#define WAIT_PDS_TIMEOUT_MS 10 +#define POLL_CMD_TIMEOUT_MS 10 + static const struct dmi_system_id inband_presence_disabled_dmi_table[] =3D= { /* * Match all Dell systems, as some Dell systems have inband @@ -103,7 +106,7 @@ static int pcie_poll_cmd(struct controller *ctrl, int t= imeout) smp_mb(); return 1; } - msleep(10); + msleep(POLL_CMD_TIMEOUT_MS); timeout -=3D 10; } while (timeout >=3D 0); return 0; /* timeout */ @@ -283,7 +286,7 @@ static void pcie_wait_for_presence(struct pci_dev *pdev) pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status); if (slot_status & PCI_EXP_SLTSTA_PDS) return; - msleep(10); + msleep(WAIT_PDS_TIMEOUT_MS); timeout -=3D 10; } while (timeout > 0); } --=20 2.34.1 From nobody Mon Feb 9 01:01:13 2026 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.2]) (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 488211DED42; Sat, 1 Nov 2025 16:06:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.2 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762013168; cv=none; b=BRxyt4BRV6RHhwiaMDSX1ZKvSjvKAjUUT4gfmc4UU123LoczBuuENpiHr6AkfZmNlol9rEcoMcnJFEx8NNwXeFXnT+JFd9nmkEKs9EoL5CGTqdje1FEsCPE1scJDGoQSjhZkyEf03Rv1k0Eq73nxDhcloErFbH/8gf84BtpNNMI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762013168; c=relaxed/simple; bh=qGBRO2c6Apw9WL+MuNeqKXnc+l5yjmXHbbw5ebuF9ds=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=fBfdEtV5TWpVtUaepb/m6DlKjj48ZQcK+9Ya+uLToQ2T1CKg/rGcT4vs9YIiisFXyZeQlMf0EHY8lwNNYxYLlMBI0/mh/0KeqhKl3fJQbj+wvw1Md+bdNA6LorI1R0OJKN5VDBI828elEkOEBNvi1bh9kx6XmLiqs4zRQ/baXVI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=XLT4nuyE; arc=none smtp.client-ip=117.135.210.2 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="XLT4nuyE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=i+ y4KPWUsBAQQaupLuRxWCTWo46ly/Fkjsxz8IWvoFo=; b=XLT4nuyEViRet9kwtx o4avf3gLD+k9Jax7H0j0LNkGj5ICyk/gMssGs6l0JiSs12mQvJxeFHULoFgdvbjl jHFo/HwkIlbIriP32NpdXoJMioRrXcCvIiBgtpnNWg2Go2k0bOeKB/zvg1H4Fapc l+I7wOVYb4M0QEn0DBTWcQAZo= Received: from zhb.. (unknown []) by gzga-smtp-mtada-g1-4 (Coremail) with SMTP id _____wDXL4nTLwZp3qOtAw--.844S6; Sun, 02 Nov 2025 00:05:42 +0800 (CST) From: Hans Zhang <18255117159@163.com> To: bhelgaas@google.com, helgaas@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Hans Zhang <18255117159@163.com> Subject: [PATCH v4 4/4] PCI/DPC: Add macro for RP busy check delay Date: Sun, 2 Nov 2025 00:05:38 +0800 Message-Id: <20251101160538.10055-5-18255117159@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251101160538.10055-1-18255117159@163.com> References: <20251101160538.10055-1-18255117159@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wDXL4nTLwZp3qOtAw--.844S6 X-Coremail-Antispam: 1Uf129KBjvdXoWrKrykKrW8CF4UZF18Kw17Jrb_yoWkAwb_uF yFvryIyrW5CF97C3yYy3ySy34UA3Z7Zr1xWa1FyFWfZr17trnrJrZ2vw15trZ8W3y5XFy5 Aw4DJ34Yyr9rGjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRK9a95UUUUU== X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/1tbiOhn4o2kGKs1hDAAAsd Content-Type: text/plain; charset="utf-8" Add PCIE_EXP_DPC_BUSY_CHECK_MS macro for RP busy check delay. Signed-off-by: Hans Zhang <18255117159@163.com> --- drivers/pci/pcie/dpc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c index fc18349614d7..bd5e8cd9e43e 100644 --- a/drivers/pci/pcie/dpc.c +++ b/drivers/pci/pcie/dpc.c @@ -21,6 +21,8 @@ #define PCI_EXP_DPC_CTL_EN_MASK (PCI_EXP_DPC_CTL_EN_FATAL | \ PCI_EXP_DPC_CTL_EN_NONFATAL) =20 +#define PCIE_EXP_DPC_BUSY_CHECK_MS 10 + static const char * const rp_pio_error_string[] =3D { "Configuration Request received UR Completion", /* Bit Position 0 */ "Configuration Request received CA Completion", /* Bit Position 1 */ @@ -135,7 +137,7 @@ static int dpc_wait_rp_inactive(struct pci_dev *pdev) pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &status); while (status & PCI_EXP_DPC_RP_BUSY && !time_after(jiffies, timeout)) { - msleep(10); + msleep(PCIE_EXP_DPC_BUSY_CHECK_MS); pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &status); } if (status & PCI_EXP_DPC_RP_BUSY) { --=20 2.34.1