Re: [PATCH v1] driver core: convert printk(KERN_<LEVEL> ...) to pr_<level>

From: Andy Shevchenko
Date: Wed Aug 29 2018 - 13:15:48 EST


On Mon, Aug 27, 2018 at 08:52:27AM -0700, Joe Perches wrote:
> On Mon, 2018-08-27 at 18:27 +0300, Andy Shevchenko wrote:
> > Convert printk:s to pr_* format.
> >
> > Note, printk(KERN_DEBUG ...) is left untouched due to side effects
> > of pr_debug().
> >
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> > ---
> > drivers/base/dd.c | 13 ++++++-------
> > 1 file changed, 6 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/base/dd.c b/drivers/base/dd.c
> > index edfc9f0b1180..f0434695961f 100644
> > --- a/drivers/base/dd.c
> > +++ b/drivers/base/dd.c
> > @@ -321,8 +321,8 @@ bool device_is_bound(struct device *dev)
> > static void driver_bound(struct device *dev)
> > {
> > if (device_is_bound(dev)) {
> > - printk(KERN_WARNING "%s: device %s already bound\n",
> > - __func__, kobject_name(&dev->kobj));
> > + pr_warn("%s: device %s already bound\n", __func__,
> > + kobject_name(&dev->kobj));
> _
> While I believe adding __func__ to printks is not generally
> useful, perhaps it's better to use pr_fmt like:
>
> #define pr_fmt(fmt) "%s: " fmt, __func__
>
> to make it easier to remove the __func__ uses too.
>
> Maybe

Your patch LGTM.
Feel free to resend properly with my either Rb or SoB tags.

> ---
> drivers/base/dd.c | 32 +++++++++++++++-----------------
> 1 file changed, 15 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/base/dd.c b/drivers/base/dd.c
> index edfc9f0b1180..5ad3a7f77013 100644
> --- a/drivers/base/dd.c
> +++ b/drivers/base/dd.c
> @@ -16,6 +16,8 @@
> * Copyright (c) 2007-2009 Novell Inc.
> */
>
> +#define pr_fmt(fmt) "%s: " fmt, __func__
> +
> #include <linux/debugfs.h>
> #include <linux/device.h>
> #include <linux/delay.h>
> @@ -321,13 +323,12 @@ bool device_is_bound(struct device *dev)
> static void driver_bound(struct device *dev)
> {
> if (device_is_bound(dev)) {
> - printk(KERN_WARNING "%s: device %s already bound\n",
> - __func__, kobject_name(&dev->kobj));
> + pr_warn("device %s already bound\n", kobject_name(&dev->kobj));
> return;
> }
>
> - pr_debug("driver: '%s': %s: bound to device '%s'\n", dev->driver->name,
> - __func__, dev_name(dev));
> + pr_debug("driver: '%s': bound to device '%s'\n",
> + dev->driver->name, dev_name(dev));
>
> klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
> device_links_driver_bound(dev);
> @@ -468,8 +469,8 @@ static int really_probe(struct device *dev, struct device_driver *drv)
> return ret;
>
> atomic_inc(&probe_count);
> - pr_debug("bus: '%s': %s: probing driver %s with device %s\n",
> - drv->bus->name, __func__, drv->name, dev_name(dev));
> + pr_debug("bus: '%s': probing driver %s with device %s\n",
> + drv->bus->name, drv->name, dev_name(dev));
> WARN_ON(!list_empty(&dev->devres_head));
>
> re_probe:
> @@ -485,8 +486,7 @@ static int really_probe(struct device *dev, struct device_driver *drv)
> goto dma_failed;
>
> if (driver_sysfs_add(dev)) {
> - printk(KERN_ERR "%s: driver_sysfs_add(%s) failed\n",
> - __func__, dev_name(dev));
> + pr_err("driver_sysfs_add(%s) failed\n", dev_name(dev));
> goto probe_failed;
> }
>
> @@ -532,8 +532,8 @@ static int really_probe(struct device *dev, struct device_driver *drv)
>
> driver_bound(dev);
> ret = 1;
> - pr_debug("bus: '%s': %s: bound device %s to driver %s\n",
> - drv->bus->name, __func__, dev_name(dev), drv->name);
> + pr_debug("bus: '%s': bound device %s to driver %s\n",
> + drv->bus->name, dev_name(dev), drv->name);
> goto done;
>
> probe_failed:
> @@ -566,9 +566,8 @@ static int really_probe(struct device *dev, struct device_driver *drv)
> break;
> default:
> /* driver matched but the probe failed */
> - printk(KERN_WARNING
> - "%s: probe of %s failed with error %d\n",
> - drv->name, dev_name(dev), ret);
> + pr_warn("probe of %s failed with error %d\n",
> + drv->name, dev_name(dev), ret);
> }
> /*
> * Ignore errors returned by ->probe so that the next driver can try
> @@ -606,8 +605,7 @@ static int really_probe_debug(struct device *dev, struct device_driver *drv)
> */
> int driver_probe_done(void)
> {
> - pr_debug("%s: probe_count = %d\n", __func__,
> - atomic_read(&probe_count));
> + pr_debug("probe_count = %d\n", atomic_read(&probe_count));
> if (atomic_read(&probe_count))
> return -EBUSY;
> return 0;
> @@ -648,8 +646,8 @@ int driver_probe_device(struct device_driver *drv, struct device *dev)
> if (!device_is_registered(dev))
> return -ENODEV;
>
> - pr_debug("bus: '%s': %s: matched device %s with driver %s\n",
> - drv->bus->name, __func__, dev_name(dev), drv->name);
> + pr_debug("bus: '%s': matched device %s with driver %s\n",
> + drv->bus->name, dev_name(dev), drv->name);
>
> pm_runtime_get_suppliers(dev);
> if (dev->parent)
>

--
With Best Regards,
Andy Shevchenko