Bluetooth: Fix incorrect alignment in Marvell BT-over-SDIO driver

The driver uses "u32" for alignment check and calculation which
works only on 32-bit system. It will crash the 64-bit system.
Replace "u32" with "unsigned long" to fix this issue.

Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index 224af53..1cfa8b4 100644 (file)
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -481,12 +481,14 @@ static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
                goto exit;
        }
 
-       if ((u32) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
-               skb_put(skb, (u32) skb->data & (BTSDIO_DMA_ALIGN - 1));
-               skb_pull(skb, (u32) skb->data & (BTSDIO_DMA_ALIGN - 1));
+       if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
+               skb_put(skb, (unsigned long) skb->data &
+                                       (BTSDIO_DMA_ALIGN - 1));
+               skb_pull(skb, (unsigned long) skb->data &
+                                       (BTSDIO_DMA_ALIGN - 1));
        }
 
-       payload = skb->tail;
+       payload = skb->data;
 
        ret = sdio_readsb(card->func, payload, card->ioport,
                          buf_block_len * blksz);
@@ -773,7 +775,7 @@ static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
        }
 
        buf = payload;
-       if ((u32) payload & (BTSDIO_DMA_ALIGN - 1)) {
+       if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
                tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
                tmpbuf = kmalloc(tmpbufsz, GFP_KERNEL);
                memset(tmpbuf, 0, tmpbufsz);

diff --git a/drivers/bluetooth/btmrvl_sdio.h b/drivers/bluetooth/btmrvl_sdio.h
index 2dd284e..27329f1 100644 (file)
--- a/drivers/bluetooth/btmrvl_sdio.h
+++ b/drivers/bluetooth/btmrvl_sdio.h
@@ -104,4 +104,5 @@ struct btmrvl_sdio_device {
 
 /* Macros for Data Alignment : address */
 #define ALIGN_ADDR(p, a)       \
-       ((((u32)(p)) + (((u32)(a)) - 1)) & ~(((u32)(a)) - 1))
+       ((((unsigned long)(p)) + (((unsigned long)(a)) - 1)) & \
+                                       ~(((unsigned long)(a)) - 1))