From: Souptick Joarder <jrdr.linux@gmail.com>
To: linux-wireless <linux-wireless@vger.kernel.org>,
Julian Calaby <julian.calaby@gmail.com>,
Kalle Valo <kvalo@codeaurora.org>
Cc: Rameshwar Sahu <sahu.rameshwar73@gmail.com>
Subject: [PATCH] wl18xx: Handle kfree() in better way when kzalloc fails
Date: Fri, 7 Oct 2016 12:19:23 +0530 [thread overview]
Message-ID: <20161007064923.GA3404@symbol-HP-ZBook-15> (raw)
This patch is added to handle kfree and return error in a better way
if kzalloc fails in wl18xx_scan_send() and wl18xx_scan_sched_scan_config().
Signed-off-by: Souptick joarder <jrdr.linux@gmail.com>
---
drivers/net/wireless/ti/wl18xx/scan.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/net/wireless/ti/wl18xx/scan.c b/drivers/net/wireless/ti/wl18xx/scan.c
index 4e522154..aed22e1 100644
--- a/drivers/net/wireless/ti/wl18xx/scan.c
+++ b/drivers/net/wireless/ti/wl18xx/scan.c
@@ -41,14 +41,13 @@ static void wl18xx_adjust_channels(struct wl18xx_cmd_scan_params *cmd,
static int wl18xx_scan_send(struct wl1271 *wl, struct wl12xx_vif *wlvif,
struct cfg80211_scan_request *req)
{
- struct wl18xx_cmd_scan_params *cmd;
+ struct wl18xx_cmd_scan_params *cmd = NULL;
struct wlcore_scan_channels *cmd_channels = NULL;
int ret;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd) {
- ret = -ENOMEM;
- goto out;
+ return -ENOMEM;
}
/* scan on the dev role if the regular one is not started */
@@ -59,7 +58,7 @@ static int wl18xx_scan_send(struct wl1271 *wl, struct wl12xx_vif *wlvif,
if (WARN_ON(cmd->role_id == WL12XX_INVALID_ROLE_ID)) {
ret = -EINVAL;
- goto out;
+ goto err_cmd_free;
}
cmd->scan_type = SCAN_TYPE_SEARCH;
@@ -84,7 +83,7 @@ static int wl18xx_scan_send(struct wl1271 *wl, struct wl12xx_vif *wlvif,
cmd_channels = kzalloc(sizeof(*cmd_channels), GFP_KERNEL);
if (!cmd_channels) {
ret = -ENOMEM;
- goto out;
+ goto err_cmd_free;
}
wlcore_set_scan_chan_params(wl, cmd_channels, req->channels,
@@ -153,6 +152,7 @@ static int wl18xx_scan_send(struct wl1271 *wl, struct wl12xx_vif *wlvif,
out:
kfree(cmd_channels);
+err_cmd_free:
kfree(cmd);
return ret;
}
@@ -171,7 +171,7 @@ int wl18xx_scan_sched_scan_config(struct wl1271 *wl,
struct cfg80211_sched_scan_request *req,
struct ieee80211_scan_ies *ies)
{
- struct wl18xx_cmd_scan_params *cmd;
+ struct wl18xx_cmd_scan_params *cmd = NULL;
struct wlcore_scan_channels *cmd_channels = NULL;
struct conf_sched_scan_settings *c = &wl->conf.sched_scan;
int ret;
@@ -185,15 +185,14 @@ int wl18xx_scan_sched_scan_config(struct wl1271 *wl,
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd) {
- ret = -ENOMEM;
- goto out;
+ return -ENOMEM;
}
cmd->role_id = wlvif->role_id;
if (WARN_ON(cmd->role_id == WL12XX_INVALID_ROLE_ID)) {
ret = -EINVAL;
- goto out;
+ goto err_cmd_free;
}
cmd->scan_type = SCAN_TYPE_PERIODIC;
@@ -218,7 +217,7 @@ int wl18xx_scan_sched_scan_config(struct wl1271 *wl,
cmd_channels = kzalloc(sizeof(*cmd_channels), GFP_KERNEL);
if (!cmd_channels) {
ret = -ENOMEM;
- goto out;
+ goto err_cmd_free;
}
/* configure channels */
@@ -296,6 +295,7 @@ int wl18xx_scan_sched_scan_config(struct wl1271 *wl,
out:
kfree(cmd_channels);
+err_cmd_free:
kfree(cmd);
return ret;
}
--
1.9.1
next reply other threads:[~2016-10-07 6:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-07 6:49 Souptick Joarder [this message]
2016-10-07 7:06 ` [PATCH] wl18xx: Handle kfree() in better way when kzalloc fails Johannes Berg
2016-10-07 7:29 ` souptick joarder
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