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irda: fix !PNP support in drivers/net/irda/nsc-ircc.c 

x86.git testing found the following build failure in latest -git:

 drivers/built-in.o: In function `nsc_ircc_pnp_probe':
 nsc-ircc.c:(.text+0xdf1b6): undefined reference to `pnp_get_resource'
 nsc-ircc.c:(.text+0xdf1d4): undefined reference to `pnp_get_resource'
 nsc-ircc.c:(.text+0xdf1ee): undefined reference to `pnp_get_resource'
 nsc-ircc.c:(.text+0xdf237): undefined reference to `pnp_get_resource'
 nsc-ircc.c:(.text+0xdf24c): undefined reference to `pnp_get_resource'
 drivers/built-in.o:nsc-ircc.c:(.text+0xdf266): more undefined references to `pnp_get_resource' follow
 make: *** [.tmp_vmlinux1] Error 1

triggered via this config:

  http://redhat.com/~mingo/misc/config-Sat_May__3_20_53_13_CEST_2008.bad

while generally most users will have PNP enabled, drivers can support
non-PNP build mode too - and most drivers implement it. That is typically
done by providing a dummy pnp_driver structure that will not probe anything.

The fallback routines in the driver will handle this dumber mode of
operation too.

This patch implements that. I have not tested whether this actually
works on real hardware so take care. It does resolve the build bug.

[ Another solution that is used by a few drivers is to exclude the driver
  in the Kconfig if PNP is disabled, via "depends on PNP", but this would
  limit the availability of the driver needlessly. ]

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ingo Molnar 2008-05-05 01:04:06 -07:00 committed by David S. Miller
parent fa1b1cff3d
commit c17f888f8f
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/irda/nsc-ircc.c
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@ -100,7 +100,9 @@ static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info);
static int nsc_ircc_init_108(nsc_chip_t *chip, chipio_t *info);
static int nsc_ircc_init_338(nsc_chip_t *chip, chipio_t *info);
static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info);
#ifdef CONFIG_PNP
static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id);
#endif
/* These are the known NSC chips */
static nsc_chip_t chips[] = {
@ -156,9 +158,11 @@ static const struct pnp_device_id nsc_ircc_pnp_table[] = {
MODULE_DEVICE_TABLE(pnp, nsc_ircc_pnp_table);
static struct pnp_driver nsc_ircc_pnp_driver = {
#ifdef CONFIG_PNP
.name = "nsc-ircc",
.id_table = nsc_ircc_pnp_table,
.probe = nsc_ircc_pnp_probe,
#endif
};
/* Some prototypes */
@ -916,6 +920,7 @@ static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info)
return 0;
}
#ifdef CONFIG_PNP
/* PNP probing */
static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id)
{
@ -952,6 +957,7 @@ static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *i
return 0;
}
#endif
/*
* Function nsc_ircc_setup (info)