power: sequencing: add defines for return values of the match() callback

Instead of using 0 and 1 as magic numbers, let's add proper defines
whose names tell the reader what the meaning behind them is.

Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20250624-pwrseq-match-defines-v1-3-a59d90a951f1@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/drivers/power/sequencing/core.c b/drivers/power/sequencing/core.c
index 0ffc259c6bb6c8333ba1fc5e6ab43e42ba0d3524..190564e55988557940206b059fef52981bd49e5b 100644 (file)
--- a/drivers/power/sequencing/core.c
+++ b/drivers/power/sequencing/core.c
@@ -628,7 +628,7 @@ static int pwrseq_match_device(struct device *pwrseq_dev, void *data)
                return 0;
 
        ret = pwrseq->match(pwrseq, match_data->dev);
-       if (ret <= 0)
+       if (ret == PWRSEQ_NO_MATCH || ret < 0)
                return ret;
 
        /* We got the matching device, let's find the right target. */
@@ -651,7 +651,7 @@ static int pwrseq_match_device(struct device *pwrseq_dev, void *data)
 
        match_data->desc->pwrseq = pwrseq_device_get(pwrseq);
 
-       return 1;
+       return PWRSEQ_MATCH_OK;
 }
 
 /**
@@ -684,7 +684,7 @@ struct pwrseq_desc *pwrseq_get(struct device *dev, const char *target)
                               pwrseq_match_device);
        if (ret < 0)
                return ERR_PTR(ret);
-       if (ret == 0)
+       if (ret == PWRSEQ_NO_MATCH)
                /* No device matched. */
                return ERR_PTR(-EPROBE_DEFER);
 

diff --git a/include/linux/pwrseq/provider.h b/include/linux/pwrseq/provider.h
index cbc3607cbfcfeb5acbc94908a1eb4a861159dc41..33b3d2c2e39decafac6c6fca9254ad4329d90e94 100644 (file)
--- a/include/linux/pwrseq/provider.h
+++ b/include/linux/pwrseq/provider.h
@@ -13,6 +13,9 @@ struct pwrseq_device;
 typedef int (*pwrseq_power_state_func)(struct pwrseq_device *);
 typedef int (*pwrseq_match_func)(struct pwrseq_device *, struct device *);
 
+#define PWRSEQ_NO_MATCH 0
+#define PWRSEQ_MATCH_OK 1
+
 /**
  * struct pwrseq_unit_data - Configuration of a single power sequencing
  *                           unit.