Re: [PATCH 3/3] staging: fbtft: use pr_fmt

Greg Kroah-Hartman
2015-09-09T19:54:36Z

On Sat, Sep 05, 2015 at 07:13:45PM +0530, Sudip Mukherjee wrote:
> Instead of defining DRVNAME and using it in all calls to pr_* family of
> macros lets start using pr_fmt.
>
> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
> ---
> drivers/staging/fbtft/fbtft_device.c | 79 ++++++++++++++++--------------------
> 1 file changed, 35 insertions(+), 44 deletions(-)
>
> diff --git a/drivers/staging/fbtft/fbtft_device.c b/drivers/staging/fbtft/fbtft_device.c
> index 80ab918..029423e 100644
> --- a/drivers/staging/fbtft/fbtft_device.c
> +++ b/drivers/staging/fbtft/fbtft_device.c
> @@ -13,6 +13,7 @@
> * GNU General Public License for more details.
> */
>
> +#define pr_fmt(fmt) "fbtft_device: " fmt
> #include <linux/module.h>
> #include <linux/kernel.h>
> #include <linux/init.h>
> @@ -21,8 +22,6 @@
>
> #include "fbtft.h"
>
> -#define DRVNAME "fbtft_device"
> -
> #define MAX_GPIOS 32
>
> static struct spi_device *spi_device;
> @@ -1215,16 +1214,16 @@ static int spi_device_found(struct device *dev, void *data)
> {
> struct spi_device *spi = container_of(dev, struct spi_device, dev);
>
> - pr_info(DRVNAME": %s %s %dkHz %d bits mode=0x%02X\n",
> - spi->modalias, dev_name(dev), spi->max_speed_hz / 1000,
> - spi->bits_per_word, spi->mode);
> + pr_info("%s %s %dkHz %d bits mode=0x%02X\n", spi->modalias,
> + dev_name(dev), spi->max_speed_hz / 1000, spi->bits_per_word,
> + spi->mode);

This should be dev_info().

>
> return 0;
> }
>
> static void pr_spi_devices(void)
> {
> - pr_info(DRVNAME": SPI devices registered:\n");
> + pr_info("SPI devices registered:\n");

Don't be noisy, this shouldn't be here at all. Or maybe pr_debug() if
you really need it.

> bus_for_each_dev(&spi_bus_type, NULL, NULL, spi_device_found);
> }
>
> @@ -1234,16 +1233,15 @@ static int p_device_found(struct device *dev, void *data)
> *pdev = container_of(dev, struct platform_device, dev);
>
> if (strstr(pdev->name, "fb"))
> - pr_info(DRVNAME": %s id=%d pdata? %s\n",
> - pdev->name, pdev->id,
> - pdev->dev.platform_data ? "yes" : "no");
> + pr_info("%s id=%d pdata? %s\n", pdev->name, pdev->id,
> + pdev->dev.platform_data ? "yes" : "no");

dev_info()

>
> return 0;
> }
>
> static void pr_p_devices(void)
> {
> - pr_info(DRVNAME": 'fb' Platform devices registered:\n");
> + pr_info("'fb' Platform devices registered:\n");

pr_debug

> bus_for_each_dev(&platform_bus_type, NULL, NULL, p_device_found);
> }
>
> @@ -1258,7 +1256,7 @@ static void fbtft_device_spi_delete(struct spi_master *master, unsigned cs)
> dev = bus_find_device_by_name(&spi_bus_type, NULL, str);
> if (dev) {
> if (verbose)
> - pr_info(DRVNAME": Deleting %s\n", str);
> + pr_info("Deleting %s\n", str);

dev_debug()

> device_del(dev);
> }
> }
> @@ -1269,7 +1267,7 @@ static int fbtft_device_spi_device_register(struct spi_board_info *spi)
>
> master = spi_busnum_to_master(spi->bus_num);
> if (!master) {
> - pr_err(DRVNAME ": spi_busnum_to_master(%d) returned NULL\n",
> + pr_err("spi_busnum_to_master(%d) returned NULL\n",
> spi->bus_num);

dev_err()

> return -EINVAL;
> }
> @@ -1278,7 +1276,7 @@ static int fbtft_device_spi_device_register(struct spi_board_info *spi)
> spi_device = spi_new_device(master, spi);
> put_device(&master->dev);
> if (!spi_device) {
> - pr_err(DRVNAME ": spi_new_device() returned NULL\n");
> + pr_err("spi_new_device() returned NULL\n");

dev_err()

> return -EPERM;
> }
> return 0;
> @@ -1301,11 +1299,11 @@ static int __init fbtft_device_init(void)
> long val;
> int ret = 0;
>
> - pr_debug("\n\n"DRVNAME": init\n");
> + pr_debug("init\n");

Just delete this.

>
> if (name == NULL) {
> #ifdef MODULE
> - pr_err(DRVNAME": missing module parameter: 'name'\n");
> + pr_err("missing module parameter: 'name'\n");
> return -EINVAL;
> #else
> return 0;
> @@ -1313,42 +1311,37 @@ static int __init fbtft_device_init(void)
> }
>
> if (init_num > FBTFT_MAX_INIT_SEQUENCE) {
> - pr_err(DRVNAME
> - ": init parameter: exceeded max array size: %d\n",
> - FBTFT_MAX_INIT_SEQUENCE);
> + pr_err("init parameter: exceeded max array size: %d\n",
> + FBTFT_MAX_INIT_SEQUENCE);
> return -EINVAL;
> }
>
> /* parse module parameter: gpios */
> while ((p_gpio = strsep(&gpios, ","))) {
> if (strchr(p_gpio, ':') == NULL) {
> - pr_err(DRVNAME
> - ": error: missing ':' in gpios parameter: %s\n",
> - p_gpio);
> + pr_err("error: missing ':' in gpios parameter: %s\n",
> + p_gpio);
> return -EINVAL;
> }
> p_num = p_gpio;
> p_name = strsep(&p_num, ":");
> if (p_name == NULL || p_num == NULL) {
> - pr_err(DRVNAME
> - ": something bad happened parsing gpios parameter: %s\n",
> - p_gpio);
> + pr_err("something bad happened parsing gpios parameter: %s\n",
> + p_gpio);
> return -EINVAL;
> }
> ret = kstrtol(p_num, 10, &val);
> if (ret) {
> - pr_err(DRVNAME
> - ": could not parse number in gpios parameter: %s:%s\n",
> - p_name, p_num);
> + pr_err("could not parse number in gpios parameter: %s:%s\n",
> + p_name, p_num);
> return -EINVAL;
> }
> strncpy(fbtft_device_param_gpios[i].name, p_name,
> FBTFT_GPIO_NAME_SIZE - 1);
> fbtft_device_param_gpios[i++].gpio = (int) val;
> if (i == MAX_GPIOS) {
> - pr_err(DRVNAME
> - ": gpios parameter: exceeded max array size: %d\n",
> - MAX_GPIOS);
> + pr_err("gpios parameter: exceeded max array size: %d\n",
> + MAX_GPIOS);
> return -EINVAL;
> }
> }
> @@ -1361,7 +1354,7 @@ static int __init fbtft_device_init(void)
> if (verbose > 2)
> pr_p_devices(); /* print list of 'fb' platform devices */
>
> - pr_debug(DRVNAME": name='%s', busnum=%d, cs=%d\n", name, busnum, cs);
> + pr_debug("name='%s', busnum=%d, cs=%d\n", name, busnum, cs);
>
> if (rotate > 0 && rotate < 4) {
> rotate = (4 - rotate) * 90;
> @@ -1376,10 +1369,10 @@ static int __init fbtft_device_init(void)
>
> /* name=list lists all supported displays */
> if (strncmp(name, "list", FBTFT_GPIO_NAME_SIZE) == 0) {
> - pr_info(DRVNAME": Supported displays:\n");
> + pr_info("Supported displays:\n");
>
> for (i = 0; i < ARRAY_SIZE(displays); i++)
> - pr_info(DRVNAME": %s\n", displays[i].name);
> + pr_info("%s\n", displays[i].name);
> return -ECANCELED;
> }
>
> @@ -1410,7 +1403,7 @@ static int __init fbtft_device_init(void)
> p_device = displays[i].pdev;
> pdata = p_device->dev.platform_data;
> } else {
> - pr_err(DRVNAME": broken displays array\n");
> + pr_err("broken displays array\n");
> return -EINVAL;
> }
>
> @@ -1442,16 +1435,14 @@ static int __init fbtft_device_init(void)
> if (displays[i].spi) {
> ret = fbtft_device_spi_device_register(spi);
> if (ret) {
> - pr_err(DRVNAME
> - ": failed to register SPI device\n");
> + pr_err("failed to register SPI device\n");
> return ret;
> }
> } else {
> ret = platform_device_register(p_device);
> if (ret < 0) {
> - pr_err(DRVNAME
> - ": platform_device_register() returned %d\n",
> - ret);
> + pr_err("platform_device_register() returned %d\n",
> + ret);
> return ret;
> }
> }
> @@ -1461,22 +1452,22 @@ static int __init fbtft_device_init(void)
> }
>
> if (!found) {
> - pr_err(DRVNAME": display not supported: '%s'\n", name);
> + pr_err("display not supported: '%s'\n", name);
> return -EINVAL;
> }
>
> if (verbose && pdata && pdata->gpios) {
> gpio = pdata->gpios;
> - pr_info(DRVNAME": GPIOS used by '%s':\n", name);
> + pr_info("GPIOS used by '%s':\n", name);
> found = false;
> while (verbose && gpio->name[0]) {
> - pr_info(DRVNAME": '%s' = GPIO%d\n",
> + pr_info("'%s' = GPIO%d\n",
> gpio->name, gpio->gpio);
> gpio++;
> found = true;
> }
> if (!found)
> - pr_info(DRVNAME": (none)\n");
> + pr_info("(none)\n");
> }
>
> if (spi_device && (verbose > 1))
> @@ -1489,7 +1480,7 @@ static int __init fbtft_device_init(void)
>
> static void __exit fbtft_device_exit(void)
> {
> - pr_debug(DRVNAME" - exit\n");
> + pr_debug("exit\n");

Delete this as well.

If a driver is working properly, nothing should show up in the kernel
log at all, otherwise it's just noise that everyone ignores.

thanks,

greg k-h