libertas: treat firmware data as const

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c
index 54280e2..d075b44 100644
--- a/drivers/net/wireless/libertas/if_cs.c
+++ b/drivers/net/wireless/libertas/if_cs.c
@@ -122,7 +122,7 @@
 static inline void if_cs_write16_rep(
 	struct if_cs_card *card,
 	uint reg,
-	void *buf,
+	const void *buf,
 	unsigned long count)
 {
 	if (debug_output)
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index 51f664b..3dd537b 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -392,7 +392,7 @@
 	unsigned long timeout;
 	u8 *chunk_buffer;
 	u32 chunk_size;
-	u8 *firmware;
+	const u8 *firmware;
 	size_t size;
 
 	lbs_deb_enter(LBS_DEB_SDIO);
@@ -508,7 +508,7 @@
 	unsigned long timeout;
 	u8 *chunk_buffer;
 	u32 chunk_size;
-	u8 *firmware;
+	const u8 *firmware;
 	size_t size, req_size;
 
 	lbs_deb_enter(LBS_DEB_SDIO);
diff --git a/drivers/net/wireless/libertas/if_usb.c b/drivers/net/wireless/libertas/if_usb.c
index 36288b2..4dcd409 100644
--- a/drivers/net/wireless/libertas/if_usb.c
+++ b/drivers/net/wireless/libertas/if_usb.c
@@ -293,7 +293,7 @@
 static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
 {
 	struct fwdata *fwdata = cardp->ep_out_buf;
-	uint8_t *firmware = cardp->fw->data;
+	const uint8_t *firmware = cardp->fw->data;
 
 	/* If we got a CRC failure on the last block, back
 	   up and retry it */
@@ -746,7 +746,7 @@
  *         len               image length
  *  @return     0 or -1
  */
-static int check_fwfile_format(uint8_t *data, uint32_t totlen)
+static int check_fwfile_format(const uint8_t *data, uint32_t totlen)
 {
 	uint32_t bincmd, exit;
 	uint32_t blksize, offset, len;