As reported by smatch:
drivers/media/pci/saa7164/saa7164-core.c:631 saa7164_irq() warn: variable dereferenced before check 'dev' (see line 621)
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
diff --git a/drivers/media/pci/saa7164/saa7164-core.c b/drivers/media/pci/saa7164/saa7164-core.c
index 9cf3c6cba498..072dcc8f13d9 100644
--- a/drivers/media/pci/saa7164/saa7164-core.c
+++ b/drivers/media/pci/saa7164/saa7164-core.c
@@ -618,12 +618,7 @@ static irqreturn_t saa7164_irq_ts(struct saa7164_port *port)
static irqreturn_t saa7164_irq(int irq, void *dev_id)
{
struct saa7164_dev *dev = dev_id;
- struct saa7164_port *porta = &dev->ports[SAA7164_PORT_TS1];
- struct saa7164_port *portb = &dev->ports[SAA7164_PORT_TS2];
- struct saa7164_port *portc = &dev->ports[SAA7164_PORT_ENC1];
- struct saa7164_port *portd = &dev->ports[SAA7164_PORT_ENC2];
- struct saa7164_port *porte = &dev->ports[SAA7164_PORT_VBI1];
- struct saa7164_port *portf = &dev->ports[SAA7164_PORT_VBI2];
+ struct saa7164_port *porta, *portb, *portc, *portd, *porte, *portf;
u32 intid, intstat[INT_SIZE/4];
int i, handled = 0, bit;
@@ -634,6 +629,13 @@ static irqreturn_t saa7164_irq(int irq, void *dev_id)
goto out;
}
+ porta = &dev->ports[SAA7164_PORT_TS1];
+ portb = &dev->ports[SAA7164_PORT_TS2];
+ portc = &dev->ports[SAA7164_PORT_ENC1];
+ portd = &dev->ports[SAA7164_PORT_ENC2];
+ porte = &dev->ports[SAA7164_PORT_VBI1];
+ portf = &dev->ports[SAA7164_PORT_VBI2];
+
/* Check that the hardware is accessible. If the status bytes are
* 0xFF then the device is not accessible, the the IRQ belongs
* to another driver.
--
2.1.0
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