[PATCH] backlight: pwm_bl: print errno for probe errors

[Martin Kepplinger-Novaković]

This makes debugging often easier.

Signed-off-by: Martin Kepplinger-Novaković 
<martin.kepplinger-novako...@ginzinger.com>
---
 drivers/video/backlight/pwm_bl.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index f1005bd0c41e3..cc7e7af71891f 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -502,7 +502,8 @@ static int pwm_backlight_probe(struct platform_device *pdev)
                                                  GPIOD_ASIS);
        if (IS_ERR(pb->enable_gpio)) {
                ret = dev_err_probe(&pdev->dev, PTR_ERR(pb->enable_gpio),
-                                   "failed to acquire enable GPIO\n");
+                                   "failed to acquire enable GPIO: %ld\n",
+                                   PTR_ERR(pb->enable_gpio));
                goto err_alloc;
        }
 
@@ -513,7 +514,8 @@ static int pwm_backlight_probe(struct platform_device *pdev)
                        pb->power_supply = NULL;
                } else {
                        dev_err_probe(&pdev->dev, ret,
-                                     "failed to acquire power regulator\n");
+                                     "failed to acquire power regulator: %d\n",
+                                     ret);
                        goto err_alloc;
                }
        }
@@ -521,7 +523,8 @@ static int pwm_backlight_probe(struct platform_device *pdev)
        pb->pwm = devm_pwm_get(&pdev->dev, NULL);
        if (IS_ERR(pb->pwm)) {
                ret = dev_err_probe(&pdev->dev, PTR_ERR(pb->pwm),
-                                   "unable to request PWM\n");
+                                   "unable to request PWM: %ld\n",
+                                   PTR_ERR(pb->pwm));
                goto err_alloc;
        }
 
-- 
2.39.2

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