[IRDA]: Use put_unaligned() in irlmp_do_discovery().

irda_device_info->hints[] is byte aligned but is being
accessed as a u16

Based upon a patch by Luke Yang <luke.adi@gmail.com>.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 1 deletions

diff --git a/net/irda/irlmp.c b/net/irda/irlmp.c
index c19e9ce05a3..57ea160f470 100644
--- a/net/irda/irlmp.c
+++ b/net/irda/irlmp.c
@@ -44,6 +44,8 @@
 #include <net/irda/irlmp.h>
 #include <net/irda/irlmp_frame.h>
 
+#include <asm/unaligned.h>
+
 static __u8 irlmp_find_free_slsap(void);
 static int irlmp_slsap_inuse(__u8 slsap_sel);
 
@@ -840,6 +842,7 @@ void irlmp_do_expiry(void)
 void irlmp_do_discovery(int nslots)
 {
         struct lap_cb *lap;
+        __u16 *data_hintsp;
 
         /* Make sure the value is sane */
         if ((nslots != 1) && (nslots != 6) && (nslots != 8) && (nslots != 16)){
@@ -849,7 +852,8 @@ void irlmp_do_discovery(int nslots)
         }
 
         /* Construct new discovery info to be used by IrLAP, */
-        u16ho(irlmp->discovery_cmd.data.hints) = irlmp->hints.word;
+        data_hintsp = (__u16 *) irlmp->discovery_cmd.data.hints;
+        put_unaligned(irlmp->hints.word, data_hintsp);
 
         /*
          *  Set character set for device name (we use ASCII), and