[PATCH] intel_punit_ipc: include linux/io.h

[Arnd Bergmann]

After we stop including linux/irq.h implicitly, we don't see linux/io.h
in intel_punit_ipc.c, leading to a build failure:

drivers/platform/x86/intel_punit_ipc.c: In function 'ipc_read_status':
drivers/platform/x86/intel_punit_ipc.c:55:9: error: implicit declaration of function 'readl' [-Werror=implicit-function-declaration]

Add back the include that is clearly needed.

Fixes: 447ae3166702 ("x86: Don't include linux/irq.h from asm/hardirq.h")
Cc: Nicolai Stange <nstange@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/platform/x86/intel_punit_ipc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/x86/intel_punit_ipc.c b/drivers/platform/x86/intel_punit_ipc.c
index f1afc0ebbc68..2efeab650345 100644
--- a/drivers/platform/x86/intel_punit_ipc.c
+++ b/drivers/platform/x86/intel_punit_ipc.c
@@ -18,6 +18,7 @@
 #include <linux/bitops.h>
 #include <linux/device.h>
 #include <linux/interrupt.h>
+#include <linux/io.h>
 #include <linux/platform_device.h>
 #include <asm/intel_punit_ipc.h>
 
-- 
2.18.0