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authorBjorn Helgaas <bjorn.helgaas@hp.com>2007-06-27 14:09:50 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-06-28 11:34:53 -0700
commit7c31d2f59c14191c3251f18ad1782fe6692f0c33 (patch)
tree883df65c2943ebb70befdc1962bc1f02809915ec /drivers/net/irda
parent80581c43d02f66afb2cafa44bef710a2549a1748 (diff)
downloadlinux-7c31d2f59c14191c3251f18ad1782fe6692f0c33.tar.bz2
smsc-ircc2: skip preconfiguration for PNP devices
If we rely on the device resources from PNPBIOS, we also have to rely on the BIOS to configure any bridges on the way to the device. Using the PNPBIOS resources but changing the configuration of a bridge behind the back of the firmware is likely to make things inconsistent. This patch addresses part of the 2.6.22 regression: "no irda0 interface (2.6.21 was OK), smsc does not find chip" It fixes smsc-ircc2 PNP device detection on HP nx5000 laptops. Other laptops, including HP nc6000, HP nc8000, HP nw8000, and Toshiba Portege 4000, still need PNP quirks to make this work. With "smsc-ircc2.nopnp", we do the legacy device probe, including manual bridge preconfiguration, as before. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Samuel Ortiz <samuel@sortiz.org> Acked-by: "Linus Walleij (LD/EAB)" <linus.walleij@ericsson.com> Cc: Andrey Borzenkov <arvidjaar@mail.ru> Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/net/irda')
-rw-r--r--drivers/net/irda/smsc-ircc2.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/net/irda/smsc-ircc2.c b/drivers/net/irda/smsc-ircc2.c
index 9043bf4aa49e..2803b370ba01 100644
--- a/drivers/net/irda/smsc-ircc2.c
+++ b/drivers/net/irda/smsc-ircc2.c
@@ -416,6 +416,13 @@ static int __init smsc_ircc_legacy_probe(void)
{
int ret = 0;
+#ifdef CONFIG_PCI
+ if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) {
+ /* Ignore errors from preconfiguration */
+ IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name);
+ }
+#endif
+
if (ircc_fir > 0 && ircc_sir > 0) {
IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir);
IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir);
@@ -459,13 +466,6 @@ static int __init smsc_ircc_init(void)
return ret;
}
-#ifdef CONFIG_PCI
- if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) {
- /* Ignore errors from preconfiguration */
- IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name);
- }
-#endif
-
dev_count = 0;
if (smsc_nopnp || !pnp_platform_devices ||