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printer gadget: BKL pushdown

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Add explicit lock_kernel() calls to printer_open()

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Corbet 2008-05-16 14:21:30 -06:00
parent 26ce4f0684
commit b2f2ba01b2
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/printer.c
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@ -462,6 +462,7 @@ printer_open(struct inode *inode, struct file *fd)
unsigned long flags; unsigned long flags;
int ret = -EBUSY; int ret = -EBUSY;
lock_kernel();
dev = container_of(inode->i_cdev, struct printer_dev, printer_cdev); dev = container_of(inode->i_cdev, struct printer_dev, printer_cdev);
spin_lock_irqsave(&dev->lock, flags); spin_lock_irqsave(&dev->lock, flags);
@ -477,7 +478,7 @@ printer_open(struct inode *inode, struct file *fd)
spin_unlock_irqrestore(&dev->lock, flags); spin_unlock_irqrestore(&dev->lock, flags);
DBG(dev, "printer_open returned %x\n", ret); DBG(dev, "printer_open returned %x\n", ret);
unlock_kernel();
return ret; return ret;
} }