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net: irda: avoid null pointer dereference

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Only dereference variable self after checking it is not NULL.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
xypron.glpk@gmx.de 2016-05-18 00:06:02 +02:00 committed by David S. Miller
parent d113412859
commit 3011905970
1 changed files with 2 additions and 1 deletions
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3
drivers/net/irda/nsc-ircc.c
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@ -1253,7 +1253,7 @@ static void nsc_ircc_change_dongle_speed(int iobase, int speed, int dongle_id)
*/
static __u8 nsc_ircc_change_speed(struct nsc_ircc_cb *self, __u32 speed)
{
struct net_device *dev = self->netdev;
struct net_device *dev;
__u8 mcr = MCR_SIR;
int iobase;
__u8 bank;
@ -1263,6 +1263,7 @@ static __u8 nsc_ircc_change_speed(struct nsc_ircc_cb *self, __u32 speed)
IRDA_ASSERT(self != NULL, return 0;);
dev = self->netdev;
iobase = self->io.fir_base;
/* Update accounting for new speed */