The code uses readl() and writel(). Include the header file to
get the declarations.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/ipu-v3/ipu-prv.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/ipu-v3/ipu-prv.h b/drivers/gpu/ipu-v3/ipu-prv.h
index 291ac1bab66d..d4621b1ea7f1 100644
--- a/drivers/gpu/ipu-v3/ipu-prv.h
+++ b/drivers/gpu/ipu-v3/ipu-prv.h
@@ -8,6 +8,7 @@
 
 struct ipu_soc;
 
+#include <linux/io.h>
 #include <linux/types.h>
 #include <linux/device.h>
 #include <linux/clk.h>
-- 
2.40.0

On Fri, Apr 28, 2023 at 11:27:08AM +0200, Thomas Zimmermann wrote:
> The code uses readl() and writel(). Include the header file to
> get the declarations.
> 
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> ---
>  drivers/gpu/ipu-v3/ipu-prv.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/ipu-v3/ipu-prv.h b/drivers/gpu/ipu-v3/ipu-prv.h
> index 291ac1bab66d..d4621b1ea7f1 100644
> --- a/drivers/gpu/ipu-v3/ipu-prv.h
> +++ b/drivers/gpu/ipu-v3/ipu-prv.h
> @@ -8,6 +8,7 @@
>  
>  struct ipu_soc;
>  
> +#include <linux/io.h>
>  #include <linux/types.h>
>  #include <linux/device.h>
>  #include <linux/clk.h>
> -- 
> 2.40.0