[tip: core/headers] efi/capsule-loader: Explicitly include linux/io.h for page_to_phys()

[tip-bot2 for Sean Christopherson]

The following commit has been merged into the core/headers branch of tip:

Commit-ID:     53db61e1d344adda56a2a9dc8ae4fc099df0f95a
Gitweb:        https://git.kernel.org/tip/53db61e1d344adda56a2a9dc8ae4fc099df0f95a
Author:        Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
AuthorDate:    Mon, 18 Nov 2019 16:21:15 -08:00
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Tue, 19 Nov 2019 17:50:26 +01:00

efi/capsule-loader: Explicitly include linux/io.h for page_to_phys()

Through a labyrinthian sequence of includes, usage of page_to_phys() is
dependent on the include of asm/io.h in x86's asm/realmode.h, which is
included in x86's asm/acpi.h and thus by linux/acpi.h.  Explicitly
include linux/io.h to break the dependency on realmode.h so that a
future patch can remove the realmode.h include from acpi.h without
breaking the build.

Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20191119002121.4107-7-sean.j.christopherson@xxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 drivers/firmware/efi/capsule-loader.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/firmware/efi/capsule-loader.c b/drivers/firmware/efi/capsule-loader.c
index b139513..d3067cb 100644
--- a/drivers/firmware/efi/capsule-loader.c
+++ b/drivers/firmware/efi/capsule-loader.c
@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/miscdevice.h>
 #include <linux/highmem.h>
+#include <linux/io.h>
 #include <linux/slab.h>
 #include <linux/mutex.h>
 #include <linux/efi.h>