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[PATCH] USB: Fix race condition in usblp_write

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Initialize status fields in the read and write urbs to prevent a race
condition with open/read/close - open/write/close sequences.

Fixes bug #4432 at bugzilla.kernel.org

Signed-off-by: Adam Oldham <oldhamca@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
C. Adam Oldham 2005-06-02 17:16:34 -04:00 committed by Greg Kroah-Hartman
parent 5da0106f0b
commit 2c45b6feb3
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/class/usblp.c
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@ -379,6 +379,8 @@ static int usblp_open(struct inode *inode, struct file *file)
usblp->writeurb->transfer_buffer_length = 0;
usblp->wcomplete = 1; /* we begin writeable */
usblp->rcomplete = 0;
usblp->writeurb->status = 0;
usblp->readurb->status = 0;
if (usblp->bidir) {
usblp->readcount = 0;