x86/boot: Fix memremap() related build failure

Ingo Molnar · Ingo Molnar · commit 693bf0aa01b7 · 2017-07-20T11:37:58.000+02:00
The following commit: 5997efb ("x86/boot: Use memremap() to map the MPF and MPC data") causes new build failures on certain randconfigs: drivers/sfi/sfi_core.c: In function ‘sfi_map_memory’: drivers/sfi/sfi_core.c:104:10: error: implicit declaration of function ‘memremap’ [-Werror=implicit-function-declaration] drivers/sfi/sfi_core.c:104:31: error: ‘MEMREMAP_WB’ undeclared (first use in this function) This is a case of parasitic header dependencies: the sfi_core.c file indirectly includes <linux/io.h> for typical - but not all configs. Including <linux/io.h> explicitly solves the build failure. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: arnd@arndb.de Cc: aryabinin@virtuozzo.com Cc: bp@alien8.de Cc: bp@suse.de Cc: brijesh.singh@amd.com Cc: corbet@lwn.net Cc: dvyukov@google.com Cc: dyoung@redhat.com Cc: glider@google.com Cc: konrad.wilk@oracle.com Cc: linux-tip-commits@vger.kernel.org Cc: luto@kernel.org Cc: lwoodman@redhat.com Cc: matt@codeblueprint.co.uk Cc: mst@redhat.com Cc: pbonzini@redhat.com Cc: riel@redhat.com Cc: rkrcmar@redhat.com Cc: thomas.lendacky@amd.com Cc: toshi.kani@hpe.com Link: http://lkml.kernel.org/r/20170720092307.6xslahuaclmsiffe@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/drivers/sfi/sfi_core.c b/drivers/sfi/sfi_core.c
@@ -68,6 +68,7 @@
 #include <linux/init.h>
 #include <linux/sfi.h>
 #include <linux/slab.h>
+#include <linux/io.h>
 
 #include "sfi_core.h"
 
