dell-laptop: Fix build error by making buffer_mutex static
The following build bug (x86, allyesconfig):
arch/x86/oprofile/built-in.o:(.data+0x250): multiple definition of `buffer_mutex'
Was triggered in -tip testing, caused by this upstream commit:
116ee77: dell-laptop: Use buffer with 32-bit physical address
There's multiple buffer_mutex's in the kernel. Make this new one
static.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index b7f4d27..29d96a4 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -132,8 +132,8 @@
};
static struct calling_interface_buffer *buffer;
-struct page *bufferpage;
-DEFINE_MUTEX(buffer_mutex);
+static struct page *bufferpage;
+static DEFINE_MUTEX(buffer_mutex);
static int hwswitch_state;