lib: clean up put_cpu_var usage

shligit · davem330 · commit 3796c3cbfb91 · 2016-09-27T22:09:17.000-04:00
put_cpu_var takes the percpu data, not the data returned from
get_cpu_var.

This doesn't change the behavior.

Cc: Tejun Heo &lt;tj@kernel.org&gt;
Signed-off-by: Shaohua Li &lt;shli@fb.com&gt;
Acked-by: Tejun Heo &lt;tj@kernel.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/lib/random32.c b/lib/random32.c
@@ -81,7 +81,7 @@ u32 prandom_u32(void)
 	u32 res;
 
 	res = prandom_u32_state(state);
-	put_cpu_var(state);
+	put_cpu_var(net_rand_state);
 
 	return res;
 }
@@ -128,7 +128,7 @@ void prandom_bytes(void *buf, size_t bytes)
 	struct rnd_state *state = &get_cpu_var(net_rand_state);
 
 	prandom_bytes_state(state, buf, bytes);
-	put_cpu_var(state);
+	put_cpu_var(net_rand_state);
 }
 EXPORT_SYMBOL(prandom_bytes);
 

Original file line number	Diff line number	Diff line change
`@@ -81,7 +81,7 @@ u32 prandom_u32(void)`
`81`	`81`	`u32 res;`
`82`	`82`
`83`	`83`	`res = prandom_u32_state(state);`
`84`		`- put_cpu_var(state);`
	`84`	`+ put_cpu_var(net_rand_state);`
`85`	`85`
`86`	`86`	`return res;`
`87`	`87`	`}`
`@@ -128,7 +128,7 @@ void prandom_bytes(void *buf, size_t bytes)`
`128`	`128`	`struct rnd_state *state = &get_cpu_var(net_rand_state);`
`129`	`129`
`130`	`130`	`prandom_bytes_state(state, buf, bytes);`
`131`		`- put_cpu_var(state);`
	`131`	`+ put_cpu_var(net_rand_state);`
`132`	`132`	`}`
`133`	`133`	`EXPORT_SYMBOL(prandom_bytes);`
`134`	`134`