--- drivers/staging/comedi/drivers/jr3_pci.c

+++ drivers/staging/comedi/drivers/jr3_pci.c

@@ -856,8 +856,11 @@ static int jr3_pci_attach(struct comedi_

}

devpriv->pci_enabled = 1;

- devpriv->iobase =

- ioremap(pci_resource_start(card, 0), sizeof(struct jr3_t));

+ devpriv->iobase = ioremap(pci_resource_start(card, 0),

+ offsetof(struct jr3_t, channel[devpriv->n_channels]));

+ if (!devpriv->iobase)

+ return -ENOMEM;

+

result = alloc_subdevices(dev, devpriv->n_channels);

if (result < 0)

goto out;