From: Simran Singhal <singhalsimran0@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
outreachy-kernel <outreachy-kernel@googlegroups.com>
Subject: [PATCH] staging: rtl8723bs: Clean up tests if NULL returned on failure
Date: Thu, 26 Mar 2020 03:59:08 +0530 [thread overview]
Message-ID: <20200325222908.GA5370@simran-Inspiron-5558> (raw)
Some functions like kmalloc/kzalloc return NULL on failure.
When NULL represents failure, !x is commonly used.
This was done using Coccinelle:
@@
expression *e;
identifier l1;
@@
e = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\)(...);
...
- e == NULL
+ !e
Signed-off-by: Simran Singhal <singhalsimran0@gmail.com>
---
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
index 29f36cca3972..5c27c11f006a 100644
--- a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
@@ -474,7 +474,7 @@ static int wpa_set_encryption(struct net_device *dev, struct ieee_param *param,
wep_key_len = wep_key_len <= 5 ? 5 : 13;
wep_total_len = wep_key_len + FIELD_OFFSET(struct ndis_802_11_wep, KeyMaterial);
pwep = kzalloc(wep_total_len, GFP_KERNEL);
- if (pwep == NULL) {
+ if (!pwep) {
RT_TRACE(_module_rtl871x_ioctl_os_c, _drv_err_, (" wpa_set_encryption: pwep allocate fail !!!\n"));
goto exit;
}
@@ -2137,7 +2137,7 @@ static int rtw_wx_set_enc_ext(struct net_device *dev,
param_len = sizeof(struct ieee_param) + pext->key_len;
param = kzalloc(param_len, GFP_KERNEL);
- if (param == NULL)
+ if (!param)
return -1;
param->cmd = IEEE_CMD_SET_ENCRYPTION;
@@ -3491,7 +3491,7 @@ static int rtw_set_encryption(struct net_device *dev, struct ieee_param *param,
wep_key_len = wep_key_len <= 5 ? 5 : 13;
wep_total_len = wep_key_len + FIELD_OFFSET(struct ndis_802_11_wep, KeyMaterial);
pwep = kzalloc(wep_total_len, GFP_KERNEL);
- if (pwep == NULL) {
+ if (!pwep) {
DBG_871X(" r871x_set_encryption: pwep allocate fail !!!\n");
goto exit;
}
--
2.17.1
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next reply other threads:[~2020-03-25 22:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-25 22:29 Simran Singhal [this message]
2020-03-26 7:23 ` [Outreachy kernel] [PATCH] staging: rtl8723bs: Clean up tests if NULL returned on failure Julia Lawall
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