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usb: gadget: FunctionFS: dereference ffs_dev conditionally

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ffs_dev->ffs_release_dev_callback should be accessed only if ffs_dev
is not NULL.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz 2014-01-13 16:49:35 +01:00 committed by Felipe Balbi
parent de9db572fe
commit ea365922f9
1 changed files with 5 additions and 4 deletions
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9
drivers/usb/gadget/f_fs.c
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@ -2590,11 +2590,12 @@ static void ffs_release_dev(struct ffs_data *ffs_data)
ffs_dev_lock();
ffs_dev = ffs_data->private_data;
if (ffs_dev)
if (ffs_dev) {
ffs_dev->mounted = false;
if (ffs_dev->ffs_release_dev_callback)
ffs_dev->ffs_release_dev_callback(ffs_dev);
if (ffs_dev->ffs_release_dev_callback)
ffs_dev->ffs_release_dev_callback(ffs_dev);
}
ffs_dev_unlock();
}