staging: xillybus: Fix comments

Trivial comments removed, and one comment clarified

Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Eli Billauer <eli.billauer@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/xillybus/xillybus_core.c b/drivers/staging/xillybus/xillybus_core.c
index 0001d1892d44ebc2b68bdd629eb0580e0a168004..04c60c64fc894c55dd933ec158dfd2184ae4b6d3 100644 (file)
--- a/drivers/staging/xillybus/xillybus_core.c
+++ b/drivers/staging/xillybus/xillybus_core.c
@@ -402,7 +402,7 @@ static int xilly_get_dma_buffers(struct xilly_endpoint *ep,
                s->left_of_salami -= bytebufsize;
                s->salami += bytebufsize;
        }
-       return 0; /* Success */
+       return 0;
 }
 
 static int xilly_setupchannels(struct xilly_endpoint *ep,
@@ -668,7 +668,7 @@ static int xilly_obtain_idt(struct xilly_endpoint *endpoint)
                return -ENODEV;
        }
 
-       return 0; /* Success */
+       return 0;
 }
 
 static ssize_t xillybus_read(struct file *filp, char __user *userbuf,
@@ -977,10 +977,11 @@ desperate:
                }
 
                /*
-                * Formally speaking, we should block for data at this point.
-                * But to keep the code cleaner, we'll just finish the loop,
-                * make the unlikely check for data, and then block at the
-                * usual place.
+                * Reaching here means that we *do* have data in the buffer,
+                * but the "partial" flag disallows returning less than
+                * required. And we don't have as much. So loop again,
+                * which is likely to end up blocking indefinitely until
+                * enough data has arrived.
                 */
        }
 
@@ -1947,7 +1948,7 @@ static int xilly_quiesce(struct xilly_endpoint *endpoint)
                        "Failed to quiesce the device on exit.\n");
                return -ENODEV;
        }
-       return 0; /* Success */
+       return 0;
 }
 
 int xillybus_endpoint_discovery(struct xilly_endpoint *endpoint)