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 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html