Le 11/12/2020 à 17:07, David Laight a écrit :
From: Christophe Leroy
Sent: 11 December 2020 15:22
Le 11/12/2020 à 09:52, Xu Wang a écrit :
Remove casting the values returned by dma_alloc_coherent.
Can you explain more in the commit log ?
As far as I can see, dma_alloc_coherent() doesn't return __iomem, and ring_base
member is __iomem
Which is probably wrong - that is the kernel address of kernel memory.
So it shouldn't have the __iomem marker.
That's where the buffer descriptors are, the driver accesses to the content of the buffer
descriptors using the IO accessors in_be16()/out_be16(). Is it not correct ?
Christophe
I wonder what else is wrong....
David
Christophe
Signed-off-by: Xu Wang <vu...@iscas.ac.cn>
---
drivers/net/ethernet/freescale/fs_enet/mac-fec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/fs_enet/mac-fec.c
b/drivers/net/ethernet/freescale/fs_enet/mac-fec.c
index 99fe2c210d0f..3ae345676e50 100644
--- a/drivers/net/ethernet/freescale/fs_enet/mac-fec.c
+++ b/drivers/net/ethernet/freescale/fs_enet/mac-fec.c
@@ -131,7 +131,7 @@ static int allocate_bd(struct net_device *dev)
struct fs_enet_private *fep = netdev_priv(dev);
const struct fs_platform_info *fpi = fep->fpi;
- fep->ring_base = (void __force __iomem *)dma_alloc_coherent(fep->dev,
+ fep->ring_base = dma_alloc_coherent(fep->dev,
(fpi->tx_ring + fpi->rx_ring) *
sizeof(cbd_t), &fep->ring_mem_addr,
GFP_KERNEL);
-
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