[PATCH] USB: usblp: 2x up() in usblp_read

up(&usblp->sem) was called twice in a row in this code path.

Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index dff1341..7ce43fb 100644 (file)
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -753,6 +753,7 @@ static ssize_t usblp_read(struct file *file, char __user *buffer, size_t count,
                                schedule();
                        } else {
                                set_current_state(TASK_RUNNING);
+                               down(&usblp->sem);
                                break;
                        }
                        down (&usblp->sem);