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drm/bridge: ti-sn65dsi86: Propagate errors in .get_state() to the caller

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.get_state() can return an error indication. Make use of it to propagate
failing hardware accesses.

Acked-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221130152148.2769768-4-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Uwe Kleine-König 2022-12-02 19:35:28 +01:00 committed by Thierry Reding
parent 3dae106f4c
commit f00de18066
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/bridge/ti-sn65dsi86.c
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@ -1512,19 +1512,19 @@ static int ti_sn_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
ret = regmap_read(pdata->regmap, SN_PWM_EN_INV_REG, &pwm_en_inv);
if (ret)
return 0;
return ret;
ret = ti_sn65dsi86_read_u16(pdata, SN_BACKLIGHT_SCALE_REG, &scale);
if (ret)
return 0;
return ret;
ret = ti_sn65dsi86_read_u16(pdata, SN_BACKLIGHT_REG, &backlight);
if (ret)
return 0;
return ret;
ret = regmap_read(pdata->regmap, SN_PWM_PRE_DIV_REG, &pre_div);
if (ret)
return 0;
return ret;
state->enabled = FIELD_GET(SN_PWM_EN_MASK, pwm_en_inv);
if (FIELD_GET(SN_PWM_INV_MASK, pwm_en_inv))