1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 7585c4164bd5..278cf5bceef2 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -22,6 +22,7 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #include "at_hdmac_regs.h"
 
@@ -99,7 +100,7 @@ static struct at_desc *atc_alloc_descriptor(struct dma_chan *chan,
 }
 
 /**
- * atc_desc_get - get a unsused descriptor from free_list
+ * atc_desc_get - get an unused descriptor from free_list
  * @atchan: channel we want a new descriptor for
  */
 static struct at_desc *atc_desc_get(struct at_dma_chan *atchan)
@@ -815,7 +816,7 @@ atc_is_tx_complete(struct dma_chan *chan,
         dev_vdbg(chan2dev(chan), "is_tx_complete: %d (d%d, u%d)\n",
                         cookie, done ? *done : 0, used ? *used : 0);
 
-        spin_lock_bh(atchan->lock);
+        spin_lock_bh(&atchan->lock);
 
         last_complete = atchan->completed_cookie;
         last_used = chan->cookie;
@@ -830,7 +831,7 @@ atc_is_tx_complete(struct dma_chan *chan,
                 ret = dma_async_is_complete(cookie, last_complete, last_used);
         }
 
-        spin_unlock_bh(atchan->lock);
+        spin_unlock_bh(&atchan->lock);
 
         if (done)
                 *done = last_complete;
@@ -1188,7 +1189,7 @@ static int at_dma_resume_noirq(struct device *dev)
         return 0;
 }
 
-static struct dev_pm_ops at_dma_dev_pm_ops = {
+static const struct dev_pm_ops at_dma_dev_pm_ops = {
         .suspend_noirq = at_dma_suspend_noirq,
         .resume_noirq = at_dma_resume_noirq,
 };