[patch -next 2/2] drivers, samsung-laptop: fix usage of isalnum

[David Rientjes]

linux/ctype.h is needed for isalnum() to avoid a build error:

drivers/platform/x86/samsung-laptop.c: In function âsamsung_sabi_diagâ:
drivers/platform/x86/samsung-laptop.c:1306: error: implicit declaration of function âisalnumâ

Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
---
 drivers/platform/x86/samsung-laptop.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -25,6 +25,7 @@
 #include <linux/acpi.h>
 #include <linux/seq_file.h>
 #include <linux/debugfs.h>
+#include <linux/ctype.h>
 
 /*
  * This driver is needed because a number of Samsung laptops do not hook