# \[PATCH v7 3/7\] ipu-v3: Include \<linux/io.h\>

- From: Thomas Zimmermann \<tzimmermann@suse.de\>
- Date: 2023-05-12 10:25:23 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2023/05/2195553
- Thread: https://ratatoskr.run/linux-fbdev/2023/05/2195549/t.md

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

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Sam Ravnborg <redacted>
Reviewed-by: Sui Jingfeng <redacted>
---
 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>
-- 
2.40.1

```