pwm: stmpe: Silence duplicate error messages

stmpe_reg_read() and stmpe_reg_write() already emit error messages when
they fail. So the extra error messages in the pwm driver are only little
useful. They are useful in some situation, as they give a bit of context
to the failing register write. So don't remove them but degrade them to
dev_dbg().

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pwm/pwm-stmpe.c b/drivers/pwm/pwm-stmpe.c
index d730631c6583acd0051058f1014cb49e3c3febf2..19c0c0f39675d3315512f45cc425229e1da120b7 100644 (file)
--- a/drivers/pwm/pwm-stmpe.c
+++ b/drivers/pwm/pwm-stmpe.c
@@ -44,7 +44,7 @@ static int stmpe_24xx_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 
        ret = stmpe_reg_read(stmpe_pwm->stmpe, STMPE24XX_PWMCS);
        if (ret < 0) {
-               dev_err(chip->dev, "error reading PWM#%u control\n",
+               dev_dbg(chip->dev, "error reading PWM#%u control\n",
                        pwm->hwpwm);
                return ret;
        }
@@ -53,7 +53,7 @@ static int stmpe_24xx_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 
        ret = stmpe_reg_write(stmpe_pwm->stmpe, STMPE24XX_PWMCS, value);
        if (ret) {
-               dev_err(chip->dev, "error writing PWM#%u control\n",
+               dev_dbg(chip->dev, "error writing PWM#%u control\n",
                        pwm->hwpwm);
                return ret;
        }
@@ -70,7 +70,7 @@ static int stmpe_24xx_pwm_disable(struct pwm_chip *chip,
 
        ret = stmpe_reg_read(stmpe_pwm->stmpe, STMPE24XX_PWMCS);
        if (ret < 0) {
-               dev_err(chip->dev, "error reading PWM#%u control\n",
+               dev_dbg(chip->dev, "error reading PWM#%u control\n",
                        pwm->hwpwm);
                return ret;
        }
@@ -79,7 +79,7 @@ static int stmpe_24xx_pwm_disable(struct pwm_chip *chip,
 
        ret = stmpe_reg_write(stmpe_pwm->stmpe, STMPE24XX_PWMCS, value);
        if (ret)
-               dev_err(chip->dev, "error writing PWM#%u control\n",
+               dev_dbg(chip->dev, "error writing PWM#%u control\n",
                        pwm->hwpwm);
        return ret;
 }
@@ -233,7 +233,7 @@ static int stmpe_24xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
 
                ret = stmpe_reg_write(stmpe_pwm->stmpe, offset, value);
                if (ret) {
-                       dev_err(chip->dev, "error writing register %02x: %d\n",
+                       dev_dbg(chip->dev, "error writing register %02x: %d\n",
                                offset, ret);
                        return ret;
                }
@@ -242,7 +242,7 @@ static int stmpe_24xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
 
                ret = stmpe_reg_write(stmpe_pwm->stmpe, offset, value);
                if (ret) {
-                       dev_err(chip->dev, "error writing register %02x: %d\n",
+                       dev_dbg(chip->dev, "error writing register %02x: %d\n",
                                offset, ret);
                        return ret;
                }