Date: Tue, 03 Aug 2004 18:37:54 +0400 From: Roman Kurakin <rik@cronyx.ru> To: Mark Murray <mark@grondar.org> Cc: obrien@FreeBSD.ORG Subject: Re: cvs commit: src/sys/modules Makefile Message-ID: <410FA342.4030506@cronyx.ru> In-Reply-To: <200408021850.i72Io3JB028204@grimreaper.grondar.org> References: <200408021850.i72Io3JB028204@grimreaper.grondar.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Mark Murray wrote:
>"David O'Brien" writes:
>
>
>>Please find a way for all your /dev KO's to detect if they are already
>>active and not panic if loaded(initialized) twice. Many of the network
>>and SCSI device KO's DTRT. Maybe you can copy their method of handling
>>this.
>>
>>
>
>I am investigating. In the meanwhile, please back out this commit, and
>keep it as a local patch if you feel that strongly about it.
>
>
Take a look how ctau(4)/cx(4)/cp(4) solve this problem. I guess that you
may use same
technic:
static int cp_modevent (module_t mod, int type, void *unused)
{
#if __FreeBSD_version >= 500000
struct cdev *dev;
#else
dev_t dev;
#endif
static int load_count = 0;
struct cdevsw *cdsw;
#if __FreeBSD_version >= 502117
dev = findcdev (makedev(CDEV_MAJOR, 0));
#elif __FreeBSD_version >= 502103
dev = udev2dev (makeudev(CDEV_MAJOR, 0));
#else
dev = makedev (CDEV_MAJOR, 0);
#endif
switch (type) {
case MOD_LOAD:
#if __FreeBSD_version >= 502117
if (dev != NULL &&
#else
if (dev != NODEV &&
#endif
(cdsw = devsw (dev)) &&
cdsw->d_maj == CDEV_MAJOR) {
printf ("Tau-PCI driver is already in system\n");
return (ENXIO);
}
rik
>M
>--
>Mark Murray
>iumop ap!sdn w,I idlaH
>
>
>
>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?410FA342.4030506>