diff options
| author | Oliver Neukum <oliver@neukum.org> | 2010-01-13 15:33:15 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:54:23 -0800 |
| commit | 86266452f80545285c14e20a8024f79c4fb88a86 (patch) | |
| tree | ebb0a287f9bf189737d4924536d18b36492fd330 /drivers/usb/misc/sisusbvga/sisusb.c | |
| parent | f9de332ebf9df71892d52f7eb64af101a647349f (diff) | |
| download | op-kernel-dev-86266452f80545285c14e20a8024f79c4fb88a86.zip op-kernel-dev-86266452f80545285c14e20a8024f79c4fb88a86.tar.gz | |
USB: Push BKL on open down into the drivers
Straightforward push into the drivers to allow
auditing individual drivers separately
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/misc/sisusbvga/sisusb.c')
| -rw-r--r-- | drivers/usb/misc/sisusbvga/sisusb.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index bb0b315..3991655 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -2416,21 +2416,28 @@ sisusb_open(struct inode *inode, struct file *file) struct usb_interface *interface; int subminor = iminor(inode); - if (!(interface = usb_find_interface(&sisusb_driver, subminor))) + lock_kernel(); + if (!(interface = usb_find_interface(&sisusb_driver, subminor))) { + unlock_kernel(); return -ENODEV; + } - if (!(sisusb = usb_get_intfdata(interface))) + if (!(sisusb = usb_get_intfdata(interface))) { + unlock_kernel(); return -ENODEV; + } mutex_lock(&sisusb->lock); if (!sisusb->present || !sisusb->ready) { mutex_unlock(&sisusb->lock); + unlock_kernel(); return -ENODEV; } if (sisusb->isopen) { mutex_unlock(&sisusb->lock); + unlock_kernel(); return -EBUSY; } @@ -2439,11 +2446,13 @@ sisusb_open(struct inode *inode, struct file *file) if (sisusb_init_gfxdevice(sisusb, 0)) { mutex_unlock(&sisusb->lock); dev_err(&sisusb->sisusb_dev->dev, "Failed to initialize device\n"); + unlock_kernel(); return -EIO; } } else { mutex_unlock(&sisusb->lock); dev_err(&sisusb->sisusb_dev->dev, "Device not attached to USB 2.0 hub\n"); + unlock_kernel(); return -EIO; } } @@ -2456,6 +2465,7 @@ sisusb_open(struct inode *inode, struct file *file) file->private_data = sisusb; mutex_unlock(&sisusb->lock); + unlock_kernel(); return 0; } |
