staging: wilc1000: fix NULL comparison style

This patch changes NULL comparison style to use ! operator found by
checkpatch.pl

CHECK: Comparison to NULL could be written "!pstrWFIDrv"
drivers/staging/wilc1000/host_interface.c:5324:

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/wilc1000/host_interface.c b/drivers/staging/wilc1000/host_interface.c
index c635b84..65bd325 100644 (file)
--- a/drivers/staging/wilc1000/host_interface.c
+++ b/drivers/staging/wilc1000/host_interface.c
@@ -5321,7 +5321,7 @@ int host_int_set_mac_chnl_num(tstrWILC_WFIDrv *hWFIDrv, u8 u8ChNum)
        tstrWILC_WFIDrv *pstrWFIDrv = (tstrWILC_WFIDrv *)hWFIDrv;
        struct host_if_msg msg;
 
-       if (pstrWFIDrv == NULL) {
+       if (!pstrWFIDrv) {
                PRINT_ER("driver is null\n");
                return -EFAULT;
        }