pnp: avoid a small unlikely memory leak in proc_read_escd()

There's a small and unlikely memory leak in
drivers/pnp/pnpbios/proc.c::proc_read_escd().  It's inside a sanity check,
so it probably won't trigger often (if at all), however it *is* a potential
leak and it's easy to avoid, so let's just fix it :)

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/pnp/pnpbios/proc.c b/drivers/pnp/pnpbios/proc.c
index 9d9841f..bb19bc9 100644 (file)
--- a/drivers/pnp/pnpbios/proc.c
+++ b/drivers/pnp/pnpbios/proc.c
@@ -94,8 +94,9 @@ static int proc_read_escd(char *buf, char **start, off_t pos,
 
        /* sanity check */
        if (escd_size > MAX_SANE_ESCD_SIZE) {
-               printk(KERN_ERR
-                      "PnPBIOS: proc_read_escd: ESCD size reported by BIOS read_escd call is too great\n");
+               printk(KERN_ERR "PnPBIOS: proc_read_escd: ESCD size reported by"
+                               " BIOS read_escd call is too great\n");
+               kfree(tmpbuf);
                return -EFBIG;
        }