[PATCH] scsi: aic7xxx: Remove unnecessary NULL check before kfree

[Wen Yang]

kfree(NULL) is safe, so removes NULL check before freeing the mem.
This patch also fix the ifnullfree.cocci warnings.

Signed-off-by: Wen Yang <wen.yang99@xxxxxxxxxx>
CC: Alex Deucher <alexander.deucher@xxxxxxx>
CC: Hannes Reinecke <hare@xxxxxxxx>
CC: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxx>
CC: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
CC: linux-scsi@xxxxxxxxxxxxxxx
CC: linux-kernel@xxxxxxxxxxxxxxx
---
 drivers/scsi/aic7xxx/aic79xx_core.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/scsi/aic7xxx/aic79xx_core.c b/drivers/scsi/aic7xxx/aic79xx_core.c
index 9ee75c9a9aa1..090440f2ebed 100644
--- a/drivers/scsi/aic7xxx/aic79xx_core.c
+++ b/drivers/scsi/aic7xxx/aic79xx_core.c
@@ -3673,8 +3673,7 @@ ahd_free_tstate(struct ahd_softc *ahd, u_int scsi_id, char channel, int force)
 		return;
 
 	tstate = ahd->enabled_targets[scsi_id];
-	if (tstate != NULL)
-		kfree(tstate);
+	kfree(tstate);
 	ahd->enabled_targets[scsi_id] = NULL;
 }
 #endif
@@ -6136,8 +6135,7 @@ ahd_set_unit(struct ahd_softc *ahd, int unit)
 void
 ahd_set_name(struct ahd_softc *ahd, char *name)
 {
-	if (ahd->name != NULL)
-		kfree(ahd->name);
+	kfree(ahd->name);
 	ahd->name = name;
 }
 
@@ -6198,12 +6196,9 @@ ahd_free(struct ahd_softc *ahd)
 		kfree(ahd->black_hole);
 	}
 #endif
-	if (ahd->name != NULL)
-		kfree(ahd->name);
-	if (ahd->seep_config != NULL)
-		kfree(ahd->seep_config);
-	if (ahd->saved_stack != NULL)
-		kfree(ahd->saved_stack);
+	kfree(ahd->name);
+	kfree(ahd->seep_config);
+	kfree(ahd->saved_stack);
 #ifndef __FreeBSD__
 	kfree(ahd);
 #endif
-- 
2.19.1