From: Frederic Danis <frederic.danis@linux.intel.com>
Date: Mon, 2 Jun 2014 18:19:46 +0000 (+0300)
Subject: ath6kl: Fix ath6kl_bmi_read_hi32 macro
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1c3d95edf026c6fb446f53913c61ff1036c469cd;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

ath6kl: Fix ath6kl_bmi_read_hi32 macro

tmp may be used uninitialized if ath6kl_bmi_read() returns an error.

Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
---

diff --git a/drivers/net/wireless/ath/ath6kl/bmi.h b/drivers/net/wireless/ath/ath6kl/bmi.h
index 18fdd69e1f71..397a52f2628b 100644
--- a/drivers/net/wireless/ath/ath6kl/bmi.h
+++ b/drivers/net/wireless/ath/ath6kl/bmi.h
@@ -242,7 +242,8 @@ struct ath6kl_bmi_target_info {
 		(void) (check_type == val);				\
 		addr = ath6kl_get_hi_item_addr(ar, HI_ITEM(item));	\
 		ret = ath6kl_bmi_read(ar, addr, (u8 *) &tmp, 4);	\
-		*val = le32_to_cpu(tmp);				\
+		if (!ret)						\
+			*val = le32_to_cpu(tmp);			\
 		ret;							\
 	})
 
diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
index d5ef211f261c..6e1e6995a634 100644
--- a/drivers/net/wireless/ath/ath6kl/init.c
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -1161,11 +1161,19 @@ static int ath6kl_upload_board_file(struct ath6kl *ar)
 		ath6kl_bmi_write_hi32(ar, hi_board_data,
 				      board_address);
 	} else {
-		ath6kl_bmi_read_hi32(ar, hi_board_data, &board_address);
+		ret = ath6kl_bmi_read_hi32(ar, hi_board_data, &board_address);
+		if (ret) {
+			ath6kl_err("Failed to get board file target address.\n");
+			return ret;
+		}
 	}
 
 	/* determine where in target ram to write extended board data */
-	ath6kl_bmi_read_hi32(ar, hi_board_ext_data, &board_ext_address);
+	ret = ath6kl_bmi_read_hi32(ar, hi_board_ext_data, &board_ext_address);
+	if (ret) {
+		ath6kl_err("Failed to get extended board file target address.\n");
+		return ret;
+	}
 
 	if (ar->target_type == TARGET_TYPE_AR6003 &&
 	    board_ext_address == 0) {