On Thu, Oct 10, 2013 at 11:26 AM, Meelis Roos <mroos@xxxxxxxx> wrote: >> On Thu, Oct 10, 2013 at 7:51 AM, Meelis Roos <mroos@xxxxxxxx> wrote: >> > To prevent hangs on non-PC machines (e.g. sparc64), probe Radeon ROM >> > from ATI IGP only on X86. Fixes hang in this place and allows PCI radeon >> > detection to move on to next problem. >> >> NACK. All this function does it attempt to read the rom from the >> framebuffer PCI BAR. If you get hangs reading the BAR, then you have >> larger problems on your platform. Also, there are non-x86 platforms >> that IGP chips which this may break. > > OK. But the code seems to just dereference addresses returned from > ioremap, but to the best of my knowledge, these are not universally > (like on each arch) safe to read without readb/readw/readl. Should I > convert these to readb for test? Yeah, that would be great. Thanks, Alex > >> > Signed-off-by: Meelis Roos <mroos@xxxxxxxx> >> > >> > diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c >> > index 061b227..48ef97c 100644 >> > --- a/drivers/gpu/drm/radeon/radeon_bios.c >> > +++ b/drivers/gpu/drm/radeon/radeon_bios.c >> > @@ -49,6 +49,11 @@ static bool igp_read_bios_from_vram(struct radeon_device *rdev) >> > resource_size_t vram_base; >> > resource_size_t size = 256 * 1024; /* ??? */ >> > >> > +#ifndef CONFIG_X86 >> > + /* IGP only exists on X86 (32- and 64-bit) */ >> > + return false; >> > +#endif >> > + >> > if (!(rdev->flags & RADEON_IS_IGP)) >> > if (!radeon_card_posted(rdev)) >> > return false; >> > >> > -- >> > Meelis Roos (mroos@xxxxxxxx) >> > > -- > Meelis Roos (mroos@xxxxxxxx) -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
