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

Message ID 20210308122020.57071-2-andriy.shevchenko@linux.intel.com
State New
Headers show
Series
  • PCI: introduce p2sb helper
Related show

Commit Message

Andy Shevchenko March 8, 2021, 12:20 p.m.
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@linux.intel.com>
---
 drivers/pci/probe.c | 12 +++---------
 include/linux/pci.h |  9 +++++++++
 2 files changed, 12 insertions(+), 9 deletions(-)

Comments

Jean Delvare March 10, 2021, 2:57 p.m. | #1
On Mon,  8 Mar 2021 14:20:14 +0200, Andy Shevchenko wrote:
> 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@linux.intel.com>

> ---

>  drivers/pci/probe.c | 12 +++---------

>  include/linux/pci.h |  9 +++++++++

>  2 files changed, 12 insertions(+), 9 deletions(-)

> (...)


Nice.

Reviewed-by: Jean Delvare <jdelvare@suse.de>


(If you introduced a _debug flavor of that, it could probably be used in
drivers/pci/hotplug/pciehp_hpc.c.)

-- 
Jean Delvare
SUSE L3 Support

Patch

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 */