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staging: cxt1e1: linux.c: Use NULL instead of 0 

Pointers should be assigned NULL instead of 0.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sachin Kamat 2013-09-27 09:36:31 +05:30 committed by Greg Kroah-Hartman
parent 0c5d465b4c
commit 86a3cdaf12
1 changed files with 13 additions and 13 deletions
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26
drivers/staging/cxt1e1/linux.c
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@ -133,7 +133,7 @@ getuserbychan (int channum)
mch_t *ch;
ch = c4_find_chan (channum);
return ch ? ch->user : 0;
return ch ? ch->user : NULL;
}
@ -245,7 +245,7 @@ c4_wq_port_cleanup (mpi_t *pi)
{
destroy_workqueue (pi->wq_port); /* this also calls
* flush_workqueue() */
pi->wq_port = 0;
pi->wq_port = NULL;
}
}
@ -420,7 +420,7 @@ create_chan (struct net_device *ndev, ci_t *ci,
int ret;
if (c4_find_chan (cp->channum))
return 0; /* channel already exists */
return NULL; /* channel already exists */
{
struct c4_priv *priv;
@ -430,14 +430,14 @@ create_chan (struct net_device *ndev, ci_t *ci,
if (!priv)
{
pr_warning("%s: no memory for net_device !\n", ci->devname);
return 0;
return NULL;
}
dev = alloc_hdlcdev (priv);
if (!dev)
{
pr_warning("%s: no memory for hdlc_device !\n", ci->devname);
OS_kfree (priv);
return 0;
return NULL;
}
priv->ci = ci;
priv->channum = cp->channum;
@ -496,7 +496,7 @@ create_chan (struct net_device *ndev, ci_t *ci,
pr_info("%s: create_chan[%d] registration error = %d.\n",
ci->devname, cp->channum, ret);
free_netdev (dev); /* cleanup */
return 0; /* failed to register */
return NULL; /* failed to register */
}
return dev;
}
@ -744,7 +744,7 @@ do_deluser (struct net_device *ndev, int lockit)
ch = c4_find_chan (channum);
if (ch == NULL)
return -ENOENT;
ch->user = 0; /* will be freed, below */
ch->user = NULL; /* will be freed, below */
}
if (lockit)
@ -959,7 +959,7 @@ c4_add_dev (hdw_info_t *hi, int brdno, unsigned long f0, unsigned long f1,
{
pr_warning("%s: no memory for struct net_device !\n", hi->devname);
error_flag = ENOMEM;
return 0;
return NULL;
}
ci = (ci_t *)(netdev_priv(ndev));
ndev->irq = irq0;
@ -970,7 +970,7 @@ c4_add_dev (hdw_info_t *hi, int brdno, unsigned long f0, unsigned long f1,
c4_list = ci;
ci->brdno = ci->next ? ci->next->brdno + 1 : 0;
if (CI == 0)
if (!CI)
CI = ci; /* DEBUG, only board 0 usage */
strcpy (ci->devname, hi->devname);
@ -996,7 +996,7 @@ c4_add_dev (hdw_info_t *hi, int brdno, unsigned long f0, unsigned long f1,
OS_kfree (netdev_priv(ndev));
OS_kfree (ndev);
error_flag = ENODEV;
return 0;
return NULL;
}
/*************************************************************
* int request_irq(unsigned int irq,
@ -1022,7 +1022,7 @@ c4_add_dev (hdw_info_t *hi, int brdno, unsigned long f0, unsigned long f1,
OS_kfree (netdev_priv(ndev));
OS_kfree (ndev);
error_flag = EIO;
return 0;
return NULL;
}
#ifdef CONFIG_SBE_PMCC4_NCOMM
if (request_irq (irq1, &c4_ebus_interrupt, IRQF_SHARED, ndev->name, ndev))
@ -1033,7 +1033,7 @@ c4_add_dev (hdw_info_t *hi, int brdno, unsigned long f0, unsigned long f1,
OS_kfree (netdev_priv(ndev));
OS_kfree (ndev);
error_flag = EIO;
return 0;
return NULL;
}
#endif
@ -1091,7 +1091,7 @@ c4_add_dev (hdw_info_t *hi, int brdno, unsigned long f0, unsigned long f1,
free_irq (irq0, ndev);
OS_kfree (netdev_priv(ndev));
OS_kfree (ndev);
return 0; /* failure, error_flag is set */
return NULL; /* failure, error_flag is set */
}
return ndev;
}