Feb 28 2016

staging: rts5208: Remove NULL test before vfree 

Author: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>

vfree frees the virtually continuous memory area starting at addr.
If addr is NULL, no operation is performed. So NULL test is not needed
before vfree.

This was done using Coccinelle:

@@
expression x;
@@
-if (x != NULL)
    vfree(x);

@@
expression x;
@@

-if (x != NULL) {
vfree(x);
x = NULL;
-}

Signed-off-by: Bhaktipriya Shridhar 
Signed-off-by: Greg Kroah-Hartman 

---
 drivers/staging/rts5208/ms.c | 30 ++++++++++--------------------
 drivers/staging/rts5208/xd.c | 36 ++++++++++++------------------------
 2 files changed, 22 insertions(+), 44 deletions(-)
 
diff --git a/drivers/staging/rts5208/ms.c b/drivers/staging/rts5208/ms.c
index b8c9337..6433015 100644
--- a/drivers/staging/rts5208/ms.c
+++ b/drivers/staging/rts5208/ms.c
@@ -2457,10 +2457,8 @@ static int ms_init_l2p_tbl(struct rtsx_chip *chip)
 	return STATUS_SUCCESS;
 
 INIT_FAIL:
-	if (ms_card->segment) {
-		vfree(ms_card->segment);
-		ms_card->segment = NULL;
-	}
+	vfree(ms_card->segment);
+	ms_card->segment = NULL;
 
 	return STATUS_FAIL;
 }
@@ -2803,14 +2801,10 @@ static int ms_build_l2p_tbl(struct rtsx_chip *chip, int seg_no)
 
 BUILD_FAIL:
 	segment->build_flag = 0;
-	if (segment->l2p_table) {
-		vfree(segment->l2p_table);
-		segment->l2p_table = NULL;
-	}
-	if (segment->free_table) {
-		vfree(segment->free_table);
-		segment->free_table = NULL;
-	}
+	vfree(segment->l2p_table);
+	segment->l2p_table = NULL;
+	vfree(segment->free_table);
+	segment->free_table = NULL;
 
 	return STATUS_FAIL;
 }
@@ -4096,14 +4090,10 @@ void ms_free_l2p_tbl(struct rtsx_chip *chip)
 
 	if (ms_card->segment != NULL) {
 		for (i = 0; i < ms_card->segment_cnt; i++) {
-			if (ms_card->segment[i].l2p_table != NULL) {
-				vfree(ms_card->segment[i].l2p_table);
-				ms_card->segment[i].l2p_table = NULL;
-			}
-			if (ms_card->segment[i].free_table != NULL) {
-				vfree(ms_card->segment[i].free_table);
-				ms_card->segment[i].free_table = NULL;
-			}
+			vfree(ms_card->segment[i].l2p_table);
+			ms_card->segment[i].l2p_table = NULL;
+			vfree(ms_card->segment[i].free_table);
+			ms_card->segment[i].free_table = NULL;
 		}
 		vfree(ms_card->segment);
 		ms_card->segment = NULL;
diff --git a/drivers/staging/rts5208/xd.c b/drivers/staging/rts5208/xd.c
index fe84f75..fc1dfe0 100644
--- a/drivers/staging/rts5208/xd.c
+++ b/drivers/staging/rts5208/xd.c
@@ -903,14 +903,10 @@ static inline void free_zone(struct zone_entry *zone)
 	zone->set_index = 0;
 	zone->get_index = 0;
 	zone->unused_blk_cnt = 0;
-	if (zone->l2p_table) {
-		vfree(zone->l2p_table);
-		zone->l2p_table = NULL;
-	}
-	if (zone->free_table) {
-		vfree(zone->free_table);
-		zone->free_table = NULL;
-	}
+	vfree(zone->l2p_table);
+	zone->l2p_table = NULL;
+	vfree(zone->free_table);
+	zone->free_table = NULL;
 }
 
 static void xd_set_unused_block(struct rtsx_chip *chip, u32 phy_blk)
@@ -1588,14 +1584,10 @@ static int xd_build_l2p_tbl(struct rtsx_chip *chip, int zone_no)
 	return STATUS_SUCCESS;
 
 Build_Fail:
-	if (zone->l2p_table) {
-		vfree(zone->l2p_table);
-		zone->l2p_table = NULL;
-	}
-	if (zone->free_table) {
-		vfree(zone->free_table);
-		zone->free_table = NULL;
-	}
+	vfree(zone->l2p_table);
+	zone->l2p_table = NULL;
+	vfree(zone->free_table);
+	zone->free_table = NULL;
 
 	return STATUS_FAIL;
 }
@@ -2251,14 +2243,10 @@ void xd_free_l2p_tbl(struct rtsx_chip *chip)
 
 	if (xd_card->zone != NULL) {
 		for (i = 0; i < xd_card->zone_cnt; i++) {
-			if (xd_card->zone[i].l2p_table != NULL) {
-				vfree(xd_card->zone[i].l2p_table);
-				xd_card->zone[i].l2p_table = NULL;
-			}
-			if (xd_card->zone[i].free_table != NULL) {
-				vfree(xd_card->zone[i].free_table);
-				xd_card->zone[i].free_table = NULL;
-			}
+			vfree(xd_card->zone[i].l2p_table);
+			xd_card->zone[i].l2p_table = NULL;
+			vfree(xd_card->zone[i].free_table);
+			xd_card->zone[i].free_table = NULL;
 		}
 		vfree(xd_card->zone);
 		xd_card->zone = NULL;

qlambert