linux-kernel - Re: [PATCH v2 1/1] PCI: Introduce pci_bus_*() printing macros when device is not available

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Message-ID: <47d32a2f648281c6a1731266d1a5d00da3d1a875.camel@perches.com>
Date:   Thu, 09 Dec 2021 11:55:43 -0800
From:   Joe Perches <joe@...ches.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jean Delvare <jdelvare@...e.de>
Subject: Re: [PATCH v2 1/1] PCI: Introduce pci_bus_*() printing macros when
 device is not available

On Thu, 2021-12-09 at 21:33 +0200, Andy Shevchenko wrote:
> On Thu, Dec 09, 2021 at 10:40:57AM -0800, Joe Perches wrote:
> > On Thu, 2021-12-09 at 20:27 +0200, Andy Shevchenko wrote:
> 
> ...
> 
> > > +#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)
> > 
> > I have a small preference for using ... and __VA_ARGS___
> 
> It contradicts what other macros in the pci.h do.
> So I will stick with current solution for the sake of consistency.

There's always this possibility.

And this: (cheers)
---
 include/linux/pci.h | 58 ++++++++++++++++++++++++++++++-----------------------
 1 file changed, 33 insertions(+), 25 deletions(-)

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 0ce26850470ef..1dc34f6eaeda7 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2456,30 +2456,38 @@ void pci_uevent_ers(struct pci_dev *pdev, enum  pci_ers_result err_type);
 /* Provide the legacy pci_dma_* API */
 #include <linux/pci-dma-compat.h>
 
-#define pci_printk(level, pdev, fmt, arg...) \
-	dev_printk(level, &(pdev)->dev, fmt, ##arg)
-
-#define pci_emerg(pdev, fmt, arg...)	dev_emerg(&(pdev)->dev, fmt, ##arg)
-#define pci_alert(pdev, fmt, arg...)	dev_alert(&(pdev)->dev, fmt, ##arg)
-#define pci_crit(pdev, fmt, arg...)	dev_crit(&(pdev)->dev, fmt, ##arg)
-#define pci_err(pdev, fmt, arg...)	dev_err(&(pdev)->dev, fmt, ##arg)
-#define pci_warn(pdev, fmt, arg...)	dev_warn(&(pdev)->dev, fmt, ##arg)
-#define pci_notice(pdev, fmt, arg...)	dev_notice(&(pdev)->dev, fmt, ##arg)
-#define pci_info(pdev, fmt, arg...)	dev_info(&(pdev)->dev, fmt, ##arg)
-#define pci_dbg(pdev, fmt, arg...)	dev_dbg(&(pdev)->dev, fmt, ##arg)
-
-#define pci_notice_ratelimited(pdev, fmt, arg...) \
-	dev_notice_ratelimited(&(pdev)->dev, fmt, ##arg)
-
-#define pci_info_ratelimited(pdev, fmt, arg...) \
-	dev_info_ratelimited(&(pdev)->dev, fmt, ##arg)
-
-#define pci_WARN(pdev, condition, fmt, arg...) \
-	WARN(condition, "%s %s: " fmt, \
-	     dev_driver_string(&(pdev)->dev), pci_name(pdev), ##arg)
-
-#define pci_WARN_ONCE(pdev, condition, fmt, arg...) \
-	WARN_ONCE(condition, "%s %s: " fmt, \
-		  dev_driver_string(&(pdev)->dev), pci_name(pdev), ##arg)
+#define pci_printk(level, pdev, fmt, ...)				\
+	dev_printk(level, &(pdev)->dev, fmt, ##__VA_ARGS__)
+
+#define pci_emerg(pdev, fmt, ...)					\
+	dev_emerg(&(pdev)->dev, fmt, ##__VA_ARGS__)
+#define pci_alert(pdev, fmt, ...)					\
+	dev_alert(&(pdev)->dev, fmt, ##__VA_ARGS__)
+#define pci_crit(pdev, fmt, ...)					\
+	dev_crit(&(pdev)->dev, fmt, ##__VA_ARGS__)
+#define pci_err(pdev, fmt, ...)						\
+	dev_err(&(pdev)->dev, fmt, ##__VA_ARGS__)
+#define pci_warn(pdev, fmt, ...)					\
+	dev_warn(&(pdev)->dev, fmt, ##__VA_ARGS__)
+#define pci_notice(pdev, fmt, ...)					\
+	dev_notice(&(pdev)->dev, fmt, ##__VA_ARGS__)
+#define pci_info(pdev, fmt, ...)					\
+	dev_info(&(pdev)->dev, fmt, ##__VA_ARGS__)
+#define pci_dbg(pdev, fmt, ...)						\
+	dev_dbg(&(pdev)->dev, fmt, ##__VA_ARGS__)
+
+#define pci_notice_ratelimited(pdev, fmt, ...)				\
+	dev_notice_ratelimited(&(pdev)->dev, fmt, ##__VA_ARGS__)
+#define pci_info_ratelimited(pdev, fmt, ...)				\
+	dev_info_ratelimited(&(pdev)->dev, fmt, ##__VA_ARGS__)
+
+#define pci_WARN(pdev, condition, fmt, ...)				\
+	WARN(condition, "%s %s: " fmt,					\
+	     dev_driver_string(&(pdev)->dev), pci_name(pdev),		\
+	     ##__VA_ARGS__)
+#define pci_WARN_ONCE(pdev, condition, fmt, ...)			\
+	WARN_ONCE(condition, "%s %s: " fmt,				\
+		  dev_driver_string(&(pdev)->dev), pci_name(pdev),	\
+		  ##__VA_ARGS__)
 
 #endif /* LINUX_PCI_H */