irda: Fix a misalign access issue. (v2)

Replace u16ho with put/get_unaligned functions

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 10 insertions, 7 deletions

diff --git a/net/irda/discovery.c b/net/irda/discovery.c
index bfacef8b76f4..a6f99b5a1499 100644
--- a/net/irda/discovery.c
+++ b/net/irda/discovery.c
@@ -40,6 +40,8 @@
 
 #include <net/irda/discovery.h>
 
+#include <asm/unaligned.h>
+
 /*
  * Function irlmp_add_discovery (cachelog, discovery)
  *
@@ -87,7 +89,7 @@ void irlmp_add_discovery(hashbin_t *cachelog, discovery_t *new)
                          */
                         hashbin_remove_this(cachelog, (irda_queue_t *) node);
                         /* Check if hints bits are unchanged */
-                        if(u16ho(node->data.hints) == u16ho(new->data.hints))
+                        if (get_unaligned((__u16 *)node->data.hints) == get_unaligned((__u16 *)new->data.hints))
                                 /* Set time of first discovery for this node */
                                 new->firststamp = node->firststamp;
                         kfree(node);
@@ -281,9 +283,9 @@ struct irda_device_info *irlmp_copy_discoveries(hashbin_t *log, int *pn,
                 /* Mask out the ones we don't want :
                  * We want to match the discovery mask, and to get only
                  * the most recent one (unless we want old ones) */
-                if ((u16ho(discovery->data.hints) & mask) &&
+                if ((get_unaligned((__u16 *)discovery->data.hints) & mask) &&
                     ((old_entries) ||
-                     ((jiffies - discovery->firststamp) < j_timeout)) ) {
+                     ((jiffies - discovery->firststamp) < j_timeout))) {
                         /* Create buffer as needed.
                          * As this function get called a lot and most time
                          * we don't have anything to put in the log (we are
diff --git a/net/irda/irlmp.c b/net/irda/irlmp.c
index 1f81f8e7c61d..7bf5b913828b 100644
--- a/net/irda/irlmp.c
+++ b/net/irda/irlmp.c
@@ -1062,7 +1062,8 @@ void irlmp_discovery_expiry(discinfo_t *expiries, int number)
                 for(i = 0; i < number; i++) {
                         /* Check if we should notify client */
                         if ((client->expir_callback) &&
-                            (client->hint_mask.word & u16ho(expiries[i].hints)
+                            (client->hint_mask.word &
+                             get_unaligned((__u16 *)expiries[i].hints)
                              & 0x7f7f) )
                                 client->expir_callback(&(expiries[i]),
                                                        EXPIRY_TIMEOUT,
@@ -1086,7 +1087,7 @@ discovery_t *irlmp_get_discovery_response(void)
 
         IRDA_ASSERT(irlmp != NULL, return NULL;);
 
-        u16ho(irlmp->discovery_rsp.data.hints) = irlmp->hints.word;
+        put_unaligned(irlmp->hints.word, (__u16 *)irlmp->discovery_rsp.data.hints);
 
         /*
          *  Set character set for device name (we use ASCII), and
diff --git a/net/irda/irnet/irnet_irda.c b/net/irda/irnet/irnet_irda.c
index 75497e55927d..a3ec0026cdb2 100644
--- a/net/irda/irnet/irnet_irda.c
+++ b/net/irda/irnet/irnet_irda.c
@@ -1673,7 +1673,7 @@ irnet_discovery_indication(discinfo_t *		discovery,
   /* Notify the control channel */
   irnet_post_event(NULL, IRNET_DISCOVER,
                    discovery->saddr, discovery->daddr, discovery->info,
-                   u16ho(discovery->hints));
+                   get_unaligned((__u16 *)discovery->hints));
 
   DEXIT(IRDA_OCB_TRACE, "\n");
 }
@@ -1704,7 +1704,7 @@ irnet_expiry_indication(discinfo_t *	expiry,
   /* Notify the control channel */
   irnet_post_event(NULL, IRNET_EXPIRE,
                    expiry->saddr, expiry->daddr, expiry->info,
-                   u16ho(expiry->hints));
+                   get_unaligned((__u16 *)expiry->hints));
 
   DEXIT(IRDA_OCB_TRACE, "\n");
 }