On Sunday 17 June 2007, Michael Buesch wrote: > The backplane on the b44 chip seems to have a silicon bug > in the IRQ routing. The ethernet core IRQ routing does not work > with the routing bit returned from the backplaneflag register. > This patch adds a workaround for the b44 chip to use a hardcoded > constant. This constant was also used in the old b44 driver. > > Signed-off-by: Michael Buesch <[EMAIL PROTECTED]> > Cc: Maximilian Engelhardt <[EMAIL PROTECTED]> > Cc: Gary Zambrano <[EMAIL PROTECTED]>
Tested-by: Maximilian Engelhardt <[EMAIL PROTECTED]>
>
> Index: bu3sch-wireless-dev/drivers/ssb/driver_pcicore.c
> ===================================================================
> --- bu3sch-wireless-dev.orig/drivers/ssb/driver_pcicore.c 2007-06-17
> 13:35:45.000000000 +0200 +++
> bu3sch-wireless-dev/drivers/ssb/driver_pcicore.c 2007-06-17
> 14:19:05.000000000 +0200 @@ -496,9 +496,15 @@ int
> ssb_pcicore_dev_irqvecs_enable(struc
> u32 intvec;
>
> intvec = ssb_read32(pdev, SSB_INTVEC);
> - tmp = ssb_read32(dev, SSB_TPSFLAG);
> - tmp &= SSB_TPSFLAG_BPFLAG;
> - intvec |= tmp;
> + if ((bus->chip_id & 0xFF00) == 0x4400) {
> + /* Workaround: On the BCM44XX the BPFLAG routing
> + * bit is wrong. Use a hardcoded constant. */
> + intvec |= 0x00000002;
> + } else {
> + tmp = ssb_read32(dev, SSB_TPSFLAG);
> + tmp &= SSB_TPSFLAG_BPFLAG;
> + intvec |= tmp;
> + }
> ssb_write32(pdev, SSB_INTVEC, intvec);
> }
>
>
> Please apply this to wireless-dev.
> This is also most likely the bug Uwe Bugla was
> bullshitting about^W^Wreporting.
Maxi
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