re: [media] netup_unidvb: NetUP Universal DVB-S/S2/T/T2/C PCI-E card driver

[Dan Carpenter <dan.carpenter@oracle.com>]

Hello Kozlov Sergey,

The patch 52b1eaf4c59a: "[media] netup_unidvb: NetUP Universal
DVB-S/S2/T/T2/C PCI-E card driver" from Jul 28, 2015, leads to the
following static checker warning:

	drivers/media/pci/netup_unidvb/netup_unidvb_spi.c:84 netup_spi_interrupt()
	error: we previously assumed 'spi' could be null (see line 83)

drivers/media/pci/netup_unidvb/netup_unidvb_spi.c
    78  irqreturn_t netup_spi_interrupt(struct netup_spi *spi)
    79  {
    80          u16 reg;
    81          unsigned long flags;
    82  
    83          if (!spi) {
                    ^^^^
    84                  dev_dbg(&spi->master->dev,
                                ^^^^^^^^^^^^^^^^^
    85                          "%s(): SPI not initialized\n", __func__);
    86                  return IRQ_NONE;
    87          }
    88          spin_lock_irqsave(&spi->lock, flags);


See also:

	drivers/media/pci/netup_unidvb/netup_unidvb_spi.c:238 netup_spi_release()
	error: we previously assumed 'spi' could be null (see line 237)

regards,
dan carpenter