spi: simplify devm_spi_register_controller

Use devm_add_action_or_reset() instead of devres_alloc() and
devres_add(), which works the same. This will simplify the
code. There is no functional changes.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/1617843307-53853-1-git-send-email-tiantao6@hisilicon.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 2fe3c3a..b1419a3 100644 (file)
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2793,9 +2793,9 @@ free_bus_id:
 }
 EXPORT_SYMBOL_GPL(spi_register_controller);
 
-static void devm_spi_unregister(struct device *dev, void *res)
+static void devm_spi_unregister(void *ctlr)
 {
-       spi_unregister_controller(*(struct spi_controller **)res);
+       spi_unregister_controller(ctlr);
 }
 
 /**
@@ -2814,22 +2814,13 @@ static void devm_spi_unregister(struct device *dev, void *res)
 int devm_spi_register_controller(struct device *dev,
                                 struct spi_controller *ctlr)
 {
-       struct spi_controller **ptr;
        int ret;
 
-       ptr = devres_alloc(devm_spi_unregister, sizeof(*ptr), GFP_KERNEL);
-       if (!ptr)
-               return -ENOMEM;
-
        ret = spi_register_controller(ctlr);
-       if (!ret) {
-               *ptr = ctlr;
-               devres_add(dev, ptr);
-       } else {
-               devres_free(ptr);
-       }
+       if (ret)
+               return ret;
 
-       return ret;
+       return devm_add_action_or_reset(dev, devm_spi_unregister, ctlr);
 }
 EXPORT_SYMBOL_GPL(devm_spi_register_controller);