AcoSail/kernel_optimize_test
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drivers/net/wireless/wl1251: add missing kfree

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In each case, the kfree already at the end of the function is also needed
in the error case.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@exists@
local idexpression x;
statement S,S1;
expression E;
identifier fl;
expression *ptr != NULL;
@@

x = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
     when != if (...) { <+...kfree(x)...+> }
     when any
     when != true x == NULL
x->fl
...>
(
if (x == NULL) S1
|
if (...) { ... when != x
               when forall
(
 return \(0\|<+...x...+>\|ptr\);
|
* return ...;
)
}
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Julia Lawall 2011-08-08 13:18:03 +02:00 committed by John W. Linville
parent bdc71bc592
commit 059c438355
2 changed files with 2 additions and 6 deletions
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6
drivers/net/wireless/wl1251/acx.c
View File

@ -140,8 +140,6 @@ int wl1251_acx_sleep_auth(struct wl1251 *wl, u8 sleep_auth)
auth->sleep_auth = sleep_auth;
ret = wl1251_cmd_configure(wl, ACX_SLEEP_AUTH, auth, sizeof(*auth));
if (ret < 0)
return ret;
out:
kfree(auth);
@ -681,10 +679,8 @@ int wl1251_acx_cca_threshold(struct wl1251 *wl)
ret = wl1251_cmd_configure(wl, ACX_CCA_THRESHOLD,
detection, sizeof(*detection));
if (ret < 0) {
if (ret < 0)
wl1251_warning("failed to set cca threshold: %d", ret);
return ret;
}
out:
kfree(detection);

2
drivers/net/wireless/wl1251/cmd.c
View File

@ -241,7 +241,7 @@ int wl1251_cmd_data_path(struct wl1251 *wl, u8 channel, bool enable)
if (ret < 0) {
wl1251_error("tx %s cmd for channel %d failed",
enable ? "start" : "stop", channel);
return ret;
goto out;
}
wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d",