Hi!
> As soon as nokia-modem on my Nokia N900 gets used, I get the following
> warning, followed by an oops [1]. I believe the nokia-modem module is
> probed with the "pm=1" argument, but that doesn't seem particularly
> important given the trace, I think.
Actually, it seems two warnings and an oops.
> > [ 165.467529] IPv6: ADDRCONF(NETDEV_CHANGE): phonet0: link becomes ready
> > [ 165.498687] ------------[ cut here ]------------
> > [ 165.503417] WARNING: CPU: 0 PID: 662 at kernel/dma/mapping.c:188 __dma_map_sg_attrs+0xd8/0x100
This one should be easy. __dma_map_sg_attrs
if (WARN_ON_ONCE(!dev->dma_mask))
return 0;
someone forgot to set the mask. ssi_start_dma() has some dev_dbgs,
could you make sure they end up in the logs?
Maybe it is as simple as adding dma_set_mask() somehwere?
dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); ?
> > [ 165.787841] ---[ end trace a3f2b689bab17aa5 ]---
> > [ 166.436523] irq 26: nobody cared (try booting with the "irqpoll" option)
> > [ 166.443298] CPU: 0 PID: 662 Comm: irq/83-SSI PORT Tainted: G W 5.15.2-218696-g31e48a7f0946-dirty #1
> > [ 166.453704] Hardware name: Nokia RX-51 board
Second warning here. We don't have handler for irq 26.
> > [ 166.593566] 8<--- cut here ---
> > [ 166.600799] Unable to handle kernel NULL pointer dereference at virtual address 00000000
> > [ 166.608978] pgd = 34df813c
> > [ 166.611724] [00000000] *pgd=00000000
And now the oops...
Best regards,
Pavel
--
http://www.livejournal.com/~pavelmachek
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