[media] netup_unidvb: fix potential crash when spi is NULL

Signed-off-by: Abylay Ospan <aospan@netup.ru>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 4 insertions, 8 deletions

diff --git a/drivers/media/pci/netup_unidvb/netup_unidvb_spi.c b/drivers/media/pci/netup_unidvb/netup_unidvb_spi.c
index f55b3276f28d..56773f3893d4 100644
--- a/drivers/media/pci/netup_unidvb/netup_unidvb_spi.c
+++ b/drivers/media/pci/netup_unidvb/netup_unidvb_spi.c
@@ -80,11 +80,9 @@ irqreturn_t netup_spi_interrupt(struct netup_spi *spi)
         u16 reg;
         unsigned long flags;
 
-        if (!spi) {
-                dev_dbg(&spi->master->dev,
-                        "%s(): SPI not initialized\n", __func__);
+        if (!spi)
                 return IRQ_NONE;
-        }
+
         spin_lock_irqsave(&spi->lock, flags);
         reg = readw(&spi->regs->control_stat);
         if (!(reg & NETUP_SPI_CTRL_IRQ)) {
@@ -234,11 +232,9 @@ void netup_spi_release(struct netup_unidvb_dev *ndev)
         unsigned long flags;
         struct netup_spi *spi = ndev->spi;
 
-        if (!spi) {
-                dev_dbg(&spi->master->dev,
-                        "%s(): SPI not initialized\n", __func__);
+        if (!spi)
                 return;
-        }
+
         spin_lock_irqsave(&spi->lock, flags);
         reg = readw(&spi->regs->control_stat);
         writew(reg | NETUP_SPI_CTRL_IRQ, &spi->regs->control_stat);