Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
[linux-2.6.git] / drivers / acpi / apei / erst-dbg.c
index cbab9b0..de73caf 100644 (file)
@@ -2,7 +2,7 @@
  * APEI Error Record Serialization Table debug support
  *
  * ERST is a way provided by APEI to save and retrieve hardware error
- * infomation to and from a persistent store. This file provide the
+ * information to and from a persistent store. This file provide the
  * debugging/testing support for ERST kernel support and firmware
  * implementation.
  *
@@ -111,11 +111,13 @@ retry:
                goto out;
        }
        if (len > erst_dbg_buf_len) {
-               kfree(erst_dbg_buf);
+               void *p;
                rc = -ENOMEM;
-               erst_dbg_buf = kmalloc(len, GFP_KERNEL);
-               if (!erst_dbg_buf)
+               p = kmalloc(len, GFP_KERNEL);
+               if (!p)
                        goto out;
+               kfree(erst_dbg_buf);
+               erst_dbg_buf = p;
                erst_dbg_buf_len = len;
                goto retry;
        }
@@ -150,11 +152,13 @@ static ssize_t erst_dbg_write(struct file *filp, const char __user *ubuf,
        if (mutex_lock_interruptible(&erst_dbg_mutex))
                return -EINTR;
        if (usize > erst_dbg_buf_len) {
-               kfree(erst_dbg_buf);
+               void *p;
                rc = -ENOMEM;
-               erst_dbg_buf = kmalloc(usize, GFP_KERNEL);
-               if (!erst_dbg_buf)
+               p = kmalloc(usize, GFP_KERNEL);
+               if (!p)
                        goto out;
+               kfree(erst_dbg_buf);
+               erst_dbg_buf = p;
                erst_dbg_buf_len = usize;
        }
        rc = copy_from_user(erst_dbg_buf, ubuf, usize);