From: Julia Lawall <julia@diku.dk>
Date: Sun, 19 Jul 2009 05:26:35 +0000 (+0000)
Subject: drivers/net: Move a dereference below a NULL test
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0376d5b25ef11e9b6450ebae20781a32d8985170;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

drivers/net: Move a dereference below a NULL test

If the NULL test is necessary, then the dereference should be moved below
the NULL test.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T;
expression E,E1;
identifier i,fld;
statement S;
@@

- T i = E->fld;
+ T i;
  ... when != E=E1
      when != i
  if (E == NULL||...) S
+ i = E->fld;
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/bnx2x_link.c b/drivers/net/bnx2x_link.c
index ed648acef7cf..2ee581a2cdec 100644
--- a/drivers/net/bnx2x_link.c
+++ b/drivers/net/bnx2x_link.c
@@ -4212,13 +4212,14 @@ static void bnx2x_turn_off_sf(struct bnx2x *bp, u8 port)
 u8 bnx2x_get_ext_phy_fw_version(struct link_params *params, u8 driver_loaded,
 			      u8 *version, u16 len)
 {
-	struct bnx2x *bp = params->bp;
+	struct bnx2x *bp;
 	u32 ext_phy_type = 0;
 	u32 spirom_ver = 0;
 	u8 status = 0 ;
 
 	if (version == NULL || params == NULL)
 		return -EINVAL;
+	bp = params->bp;
 
 	spirom_ver = REG_RD(bp, params->shmem_base +
 		   offsetof(struct shmem_region,