On 11/13/2009 06:15 PM, William Bourque wrote: > > Larry Finger wrote: >> Based on a suggestion by Matthew Garrett, please try the patch below. >> >> Thanks, >> >> 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 >> @@ -43,6 +43,7 @@ >> #include <linux/io.h> >> #include <linux/dma-mapping.h> >> #include <asm/unaligned.h> >> +#include <linux/pm_qos_params.h> >> >> #include "b43.h" >> #include "main.h" >> @@ -3881,6 +3882,8 @@ redo: >> if (!dev || b43_status(dev) < B43_STAT_STARTED) >> return dev; >> >> + pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "b43", >> + PM_QOS_DEFAULT_VALUE); >> /* Cancel work. Unlock to avoid deadlocks. */ >> mutex_unlock(&wl->mutex); >> cancel_delayed_work_sync(&dev->periodic_work); >> @@ -3963,6 +3966,9 @@ static int b43_wireless_core_start(struc >> /* We are ready to run. */ >> b43_set_status(dev, B43_STAT_STARTED); >> >> + /* Set the maximum DMA latency */ >> + pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "b43", 200); >> + >> /* Start data flow (TX/RX). */ >> b43_mac_enable(dev); >> b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask); >> >> >> >> > > Well, this one did not solve the problem but it certainly did help! > > It took me some effort to make it bug again... I worked fine for 5 > minutes, I was able to browse the web and such. I was also > removed/inserted the module a few times. It finally crashed when I tried > to transfert a file of several MB. > > Maybe the 200ms delay should be less (or more?) I think I will try to > change it for some arbitrary number, just to see if it helps.
You should try decreasing it. That parameter is used by 2 drivers in the kernel: ipw2100 with a value of 175 and e1000e with a value of 55. I would expect the value for the other wireless device to be closer that that for a wired interface. Please try 150. If that also fails, try 100. BTW, the parameter is in usec, not msec. I'm finally encouraged that we might figure out this problem. Larry Larry _______________________________________________ Bcm43xx-dev mailing list Bcm43xx-dev@lists.berlios.de https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
