[PATCH powerpc] Revert c6102609 and replace it with the correct fix for vio dma mask setting
From: Li Zhong <hidden>
Date: 2013-11-27 09:22:41
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
This patch reverts my previous "fix", and replace it with the correct fix from Russell. And as Russell pointed out -- dma_set_mask_and_coherent() (and the other dma_set_mask() functions) are really supposed to be used by drivers only. Signed-off-by: Li Zhong <redacted> --- arch/powerpc/kernel/vio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 76a6482..d771778 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c@@ -1419,7 +1419,8 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node) /* needed to ensure proper operation of coherent allocations * later, in case driver doesn't set it explicitly */ - dma_coerce_mask_and_coherent(&viodev->dev, DMA_BIT_MASK(64)); + viodev->dev.coherent_dma_mask = DMA_BIT_MASK(64); + viodev->dev.dma_mask = &viodev->dev.coherent_dma_mask; } /* register with generic device framework */