Request for testing b43 & Broadcom 14e4:4315 cards for DMA ERRORs (Linux 3.0)

Rafał Miłecki zajec5 at
Mon May 30 03:22:32 EDT 2011

Hello everybody,

I believe I've grabbed e-mails of all the people reporting DMA errors
on b43/bcm43xx mailing list.

Short remind of the problem. When using b43 and LP-PHY card on some
specific machines you got:
b43-phy0 ERROR: Fatal DMA error: 0x00000800, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...

The workaround was to use PIO instead of DMA, or "modprobe wl && rmmod wl".

I believe we've fixed that errors in Linux 3.0-rc1. Can you give it a
chance and report back?


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