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Don't use evil casts in cdevsw initialization.

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This commit is contained in:
phk 2003-03-02 19:17:51 +00:00
parent d44666a5de
commit ff24404b37
1 changed files with 13 additions and 5 deletions
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18
sys/dev/null/null.c
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@ -44,15 +44,16 @@ static dev_t zero_dev;
static d_write_t null_write; static d_write_t null_write;
static d_ioctl_t null_ioctl; static d_ioctl_t null_ioctl;
static d_read_t zero_read; static d_read_t zero_read;
static d_read_t null_read;
#define CDEV_MAJOR 2 #define CDEV_MAJOR 2
#define NULL_MINOR 2 #define NULL_MINOR 2
#define ZERO_MINOR 12 #define ZERO_MINOR 12
static struct cdevsw null_cdevsw = { static struct cdevsw null_cdevsw = {
/* open */ (d_open_t *)nullop, /* open */ nullopen,
/* close */ (d_close_t *)nullop, /* close */ nullclose,
/* read */ (d_read_t *)nullop, /* read */ null_read,
/* write */ null_write, /* write */ null_write,
/* ioctl */ null_ioctl, /* ioctl */ null_ioctl,
/* poll */ nopoll, /* poll */ nopoll,
@ -67,8 +68,8 @@ static struct cdevsw null_cdevsw = {
}; };
static struct cdevsw zero_cdevsw = { static struct cdevsw zero_cdevsw = {
/* open */ (d_open_t *)nullop, /* open */ nullopen,
/* close */ (d_close_t *)nullop, /* close */ nullclose,
/* read */ zero_read, /* read */ zero_read,
/* write */ null_write, /* write */ null_write,
/* ioctl */ noioctl, /* ioctl */ noioctl,
@ -85,6 +86,13 @@ static struct cdevsw zero_cdevsw = {
static void *zbuf; static void *zbuf;
static int
null_read(dev_t dev __unused, struct uio *uio, int flags __unused)
{
return 0;
}
/* ARGSUSED */ /* ARGSUSED */
static int static int
null_write(dev_t dev __unused, struct uio *uio, int flags __unused) null_write(dev_t dev __unused, struct uio *uio, int flags __unused)