linux-kernel - [RFC PATCH 34/60] hyper_dmabuf: extend DMA bitmask to 64-bits.

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Date:   Tue, 19 Dec 2017 11:29:50 -0800
From:   Dongwon Kim <dongwon.kim@...el.com>
To:     linux-kernel@...r.kernel.org
Cc:     dri-devel@...ts.freedesktop.org, xen-devel@...ts.xenproject.org,
        mateuszx.potrola@...el.com, dongwon.kim@...el.com
Subject: [RFC PATCH 34/60] hyper_dmabuf: extend DMA bitmask to 64-bits.

From: Mateusz Polrola <mateuszx.potrola@...el.com>

Extending DMA bitmask of hyper_dmabuf device to cover whole
address space driver may access.

Signed-off-by: Dongwon Kim <dongwon.kim@...el.com>
---
 drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c b/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
index 476c0d7..f7d98c1 100644
--- a/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
+++ b/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
@@ -723,7 +723,7 @@ int register_device(void)
 	hyper_dmabuf_private.device = hyper_dmabuf_miscdev.this_device;
 
 	/* TODO: Check if there is a different way to initialize dma mask nicely */
-	dma_coerce_mask_and_coherent(hyper_dmabuf_private.device, 0xFFFFFFFF);
+	dma_coerce_mask_and_coherent(hyper_dmabuf_private.device, DMA_BIT_MASK(64));
 
 	return ret;
 }
-- 
2.7.4