As shown in Kernel Bugzilla #14761, doing a controller restart after a fatal DMA error does not accomplish anything other than consume the CPU on an affected system. Accordingly, substitute a meaningful message for the restart. Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx> Cc: Stable <stable@xxxxxxxxxxxxxxx> [2.6.32] --- John, If possible, this patch should be applied to 2.6.33. I made the message be two parts as the second will be replaced once the patch to change PIO from a compile-time to a run-time option is completed and tested. It is working here, but needs further testing. I expected the performance to be degraded, but it seems to be too much here. Larry --- Index: wireless-testing/drivers/net/wireless/b43/main.c =================================================================== --- wireless-testing.orig/drivers/net/wireless/b43/main.c +++ wireless-testing/drivers/net/wireless/b43/main.c @@ -1784,7 +1784,10 @@ static void b43_do_interrupt_thread(stru dma_reason[0], dma_reason[1], dma_reason[2], dma_reason[3], dma_reason[4], dma_reason[5]); - b43_controller_restart(dev, "DMA error"); + b43err(dev->wl, "This device does not support DMA " + "on your system. Please use PIO instead.\n"); + b43err(dev->wl, "CONFIG_B43_FORCE_PIO must be set in " + "your kernel configuration.\n"); return; } if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) { -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html