On Wed, 14 Apr 2010, Pedro Ribeiro wrote: > On 14 April 2010 22:01, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote: > > On Wed, Apr 14, 2010 at 04:29:22PM -0400, Alan Stern wrote: > >> On Wed, 14 Apr 2010, Chris Wright wrote: > >> > >> > So dma_map_single is the case that's failing, but you think the mask is > >> > correct? What about the direction? > >> > >> The mask and direction are unquestionably correct. The mask is set up > >> by pci_setup_device() and not changed thereafter. Furthermore, the > >> audio works okay until another device (a DVB tuner) is plugged in. > > > > Could the driver for the DVB tuner change the PCI mask? That is, change > > the pci mask way after it has been initialized (don't laugh, this did > > happend - as I remember 4 months fix was posted on the DRM mailing list > > for this). > > > > I can also trigger the bug on mount and unmount of a USB stick, albeit > its not as intensive. In addition, it's worth pointing out that the DVB tuner is another USB device, not a PCI device. Hence it doesn't have a PCI driver, and it seems most unlikely that its driver would modify the DMA mask of a different device. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
