[v2,1/8] PCI: Introduce pci_bus_*() printing macros when device is not available

Commit Message

Andy Shevchenko Dec. 21, 2021, 5:39 p.m. UTC

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 <[e-mail]>
Reviewed-by: Jean Delvare <[e-mail]>
---
 drivers/pci/probe.c | 12 +++---------
 include/linux/pci.h |  8 ++++++++
 2 files changed, 11 insertions(+), 9 deletions(-)

Comments

Andy Shevchenko Dec. 21, 2021, 5:49 p.m. UTC | #1

On Tue, Dec 21, 2021 at 07:39:38PM +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.

Please, ignore this version (the code will be kept the same in v3, but what
is missed is cover letter and changelog).

I will send it as soon as I prepare the cover letter.

It also missed Henning in the Cc list.

Patch

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 78962652f5bf..82014b248f4d 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2333,16 +2333,12 @@  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;
@@ -2352,9 +2348,7 @@  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 d4308f847e58..e3c9edd103df 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2484,4 +2484,12 @@  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 */