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button: add udevice forward declaration

After 401d1c4f5d2d ("common: Drop asm/global_data.h from common header")
build fails with :

drivers/button/button-uclass.c:13:5: error: conflicting types for 'button_get_by_label'
int button_get_by_label(const char *label, struct udevice **devp)
    ^~~~~~~~~~~~~~~~~~~

Adding struct udevice forward declaration in button.h solves the build error.

Fixes: 401d1c4f5d2d ("common: Drop asm/global_data.h from common header")
Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Neil Armstrong 3 jaren geleden
bovenliggende
commit
2d339efb1f
1 gewijzigde bestanden met toevoegingen van 2 en 0 verwijderingen
  1. 2 0
      include/button.h

+ 2 - 0
include/button.h

@@ -6,6 +6,8 @@
 #ifndef __BUTTON_H
 #define __BUTTON_H
 
+struct udevice;
+
 /**
  * struct button_uc_plat - Platform data the uclass stores about each device
  *