diff options
| author | Ben Dooks <ben-linux@fluff.org> | 2008-08-05 22:01:22 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-05 23:33:48 +0200 |
| commit | 14563a4ec450f35c70fbe5f6ac5199e9d5a0edc5 (patch) | |
| tree | 07cc513465e074eef9d0f369dc639af845b1db8d /drivers/video/backlight/pwm_bl.c | |
| parent | blackfin RTC driver: drop PIE/stopwatch code since the hardware can only do a... (diff) | |
| download | linux-14563a4ec450f35c70fbe5f6ac5199e9d5a0edc5.tar.xz linux-14563a4ec450f35c70fbe5f6ac5199e9d5a0edc5.zip | |
backlight: add more information output to pwm_backlight
Make the error paths in the pwm_backlight driver more informative in the
probe path, especially for the times that it finds an error.
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/backlight/pwm_bl.c')
| -rw-r--r-- | drivers/video/backlight/pwm_bl.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 6338d0e2fe07..441e5a707d37 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -68,8 +68,10 @@ static int pwm_backlight_probe(struct platform_device *pdev) struct pwm_bl_data *pb; int ret; - if (!data) + if (!data) { + dev_err(&pdev->dev, "failed to find platform data\n"); return -EINVAL; + } if (data->init) { ret = data->init(&pdev->dev); @@ -79,6 +81,7 @@ static int pwm_backlight_probe(struct platform_device *pdev) pb = kzalloc(sizeof(*pb), GFP_KERNEL); if (!pb) { + dev_err(&pdev->dev, "no memory for state\n"); ret = -ENOMEM; goto err_alloc; } @@ -91,7 +94,8 @@ static int pwm_backlight_probe(struct platform_device *pdev) dev_err(&pdev->dev, "unable to request PWM for backlight\n"); ret = PTR_ERR(pb->pwm); goto err_pwm; - } + } else + dev_dbg(&pdev->dev, "got pwm for backlight\n"); bl = backlight_device_register(pdev->name, &pdev->dev, pb, &pwm_backlight_ops); |