tree c86321fcc1fee3924ea1e9f4eebc4609f5dcae4b
parent 451771c40c6a0c44b57d4fbae8d6803e2213fa53
author Pete Zaitcev <[EMAIL PROTECTED]> Tue, 26 Jul 2005 02:50:46 -0700
committer Marcelo Tosatti <[EMAIL PROTECTED]> Mon, 25 Jul 2005 21:12:30 -0300
[PATCH] usb: printer double up()
Doing a double up() is actually safe in Linux, but still, it's a bug.
This fix is present in 2.6.13-rc3.
By Domen Puncer <[EMAIL PROTECTED]>
up(&usblp->sem) was called twice in a row in this code path.
drivers/usb/printer.c | 1 +
1 files changed, 1 insertion(+)
diff --git a/drivers/usb/printer.c b/drivers/usb/printer.c
--- a/drivers/usb/printer.c
+++ b/drivers/usb/printer.c
@@ -740,6 +740,7 @@ static ssize_t usblp_read(struct file *f
schedule();
} else {
set_current_state(TASK_RUNNING);
+ down (&usblp->sem);
break;
}
down (&usblp->sem);
-
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