linux-kernel - [PATCH v1 1/7] PCI: Introduce pci_bus_*() printing macros when device is not available

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Message-Id: <20210308122020.57071-2-andriy.shevchenko@linux.intel.com>
Date:   Mon,  8 Mar 2021 14:20:14 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Jean Delvare <jdelvare@...e.de>,
        Lee Jones <lee.jones@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Tan Jui Nee <jui.nee.tan@...el.com>,
        Jim Quinlan <james.quinlan@...adcom.com>,
        Jonathan Yong <jonathan.yong@...el.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-pci@...r.kernel.org
Cc:     Jean Delvare <jdelvare@...e.com>, Peter Tyser <ptyser@...-inc.com>,
        hdegoede@...hat.com, henning.schild@...mens.com
Subject: [PATCH v1 1/7] PCI: Introduce pci_bus_*() printing macros when device is not available

In some cases PCI device structure is not available and we want to print
information based on the bus and devfn parameters. For this cases introduce
pci_bus_*() printing macros and replace in existing users.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/pci/probe.c | 12 +++---------
 include/linux/pci.h |  9 +++++++++
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 953f15abc850..7d67be52d8e5 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2268,16 +2268,12 @@ static bool pci_bus_wait_crs(struct pci_bus *bus, int devfn, u32 *l,
 	 */
 	while (pci_bus_crs_vendor_id(*l)) {
 		if (delay > timeout) {
-			pr_warn("pci %04x:%02x:%02x.%d: not ready after %dms; giving up\n",
-				pci_domain_nr(bus), bus->number,
-				PCI_SLOT(devfn), PCI_FUNC(devfn), delay - 1);
+			pci_bus_warn(bus, devfn, "not ready after %dms; giving up\n", delay - 1);
 
 			return false;
 		}
 		if (delay >= 1000)
-			pr_info("pci %04x:%02x:%02x.%d: not ready after %dms; waiting\n",
-				pci_domain_nr(bus), bus->number,
-				PCI_SLOT(devfn), PCI_FUNC(devfn), delay - 1);
+			pci_bus_info(bus, devfn, "not ready after %dms; waiting\n", delay - 1);
 
 		msleep(delay);
 		delay *= 2;
@@ -2287,9 +2283,7 @@ static bool pci_bus_wait_crs(struct pci_bus *bus, int devfn, u32 *l,
 	}
 
 	if (delay >= 1000)
-		pr_info("pci %04x:%02x:%02x.%d: ready after %dms\n",
-			pci_domain_nr(bus), bus->number,
-			PCI_SLOT(devfn), PCI_FUNC(devfn), delay - 1);
+		pci_bus_info(bus, devfn, "ready after %dms\n", delay - 1);
 
 	return true;
 }
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 86c799c97b77..c557d4a8476f 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2463,4 +2463,13 @@ void pci_uevent_ers(struct pci_dev *pdev, enum  pci_ers_result err_type);
 	WARN_ONCE(condition, "%s %s: " fmt, \
 		  dev_driver_string(&(pdev)->dev), pci_name(pdev), ##arg)
 
+#define pci_bus_printk(level, bus, devfn, fmt, arg...)		\
+	printk(level "pci %04x:%02x:%02x.%d: " fmt,		\
+	       pci_domain_nr(bus), bus->number,			\
+	       PCI_SLOT(devfn), PCI_FUNC(devfn), ##arg)
+
+#define pci_bus_err(bus, devfn, fmt, arg...)	pci_bus_printk(KERN_ERR, bus, devfn, fmt, ##arg)
+#define pci_bus_warn(bus, devfn, fmt, arg...)	pci_bus_printk(KERN_WARNING, bus, devfn, fmt, ##arg)
+#define pci_bus_info(bus, devfn, fmt, arg...)	pci_bus_printk(KERN_INFO, bus, devfn, fmt, ##arg)
+
 #endif /* LINUX_PCI_H */
-- 
2.30.1