mei: drop mei_io_cb_alloc_buf

mei_io_cb_alloc_buf have a single caller :mei_cl_alloc_cb. After amthif
stopped using it, the code can be integrated into the caller and the
function can be dropped.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 6 insertions, 28 deletions

diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 641c1a566687..6658917be64f 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -420,31 +420,6 @@ static inline void mei_io_list_free(struct mei_cl_cb *list, struct mei_cl *cl)
 }
 
 /**
- * mei_io_cb_alloc_buf - allocate callback buffer
- *
- * @cb: io callback structure
- * @length: size of the buffer
- *
- * Return: 0 on success
- *         -EINVAL if cb is NULL
- *         -ENOMEM if allocation failed
- */
-int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length)
-{
-        if (!cb)
-                return -EINVAL;
-
-        if (length == 0)
-                return 0;
-
-        cb->buf.data = kmalloc(length, GFP_KERNEL);
-        if (!cb->buf.data)
-                return -ENOMEM;
-        cb->buf.size = length;
-        return 0;
-}
-
-/**
  * mei_cl_alloc_cb - a convenient wrapper for allocating read cb
  *
  * @cl: host client
@@ -464,10 +439,15 @@ struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
         if (!cb)
                 return NULL;
 
-        if (mei_io_cb_alloc_buf(cb, length)) {
+        if (length == 0)
+                return cb;
+
+        cb->buf.data = kmalloc(length, GFP_KERNEL);
+        if (!cb->buf.data) {
                 mei_io_cb_free(cb);
                 return NULL;
         }
+        cb->buf.size = length;
 
         return cb;
 }
diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
index 0d7a3a1fef78..16466aa40cbd 100644
--- a/drivers/misc/mei/client.h
+++ b/drivers/misc/mei/client.h
@@ -85,8 +85,6 @@ static inline u8 mei_me_cl_ver(const struct mei_me_client *me_cl)
 struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type,
                                  const struct file *fp);
 void mei_io_cb_free(struct mei_cl_cb *priv_cb);
-int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length);
-
 
 /**
  * mei_io_list_init - Sets up a queue list.