I had removed this when I switched the atom indirect io methods to use the io bar rather than the mmio bar, but it appears it's still needed. Reported-by: Mark Lord <kernel@xxxxxxxxxxxx> Signed-off-by: Alex Deucher <alexdeucher@xxxxxxxxx> Cc: stable@xxxxxxxxxx --- drivers/gpu/drm/radeon/atom.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c index 8e421f6..05efb5b 100644 --- a/drivers/gpu/drm/radeon/atom.c +++ b/drivers/gpu/drm/radeon/atom.c @@ -112,6 +112,7 @@ static uint32_t atom_iio_execute(struct atom_context *ctx, int base, base += 3; break; case ATOM_IIO_WRITE: + (void)ctx->card->ioreg_read(ctx->card, CU16(base + 1)); ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp); base += 3; break; -- 1.7.1.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
