Re: [PATCH] ixp4xx_eth: set the device dma_coherent_mask
From: David Miller <davem@davemloft.net>
Date: 2013-03-19 16:34:01
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From: Christophe Aeschlimann <redacted> Date: Tue, 19 Mar 2013 16:59:25 +0100
Without the mask it is impossible to take the network interface up since it returns the following error:quoted
net eth1: coherent DMA mask is unset ifconfig: SIOCSIFFLAGS: Cannot allocate memoryTested on an out-of-tree ixp425 based board. Signed-off-by: Christophe Aeschlimann <redacted>
...
quoted hunk ↗ jump to hunk
@@ -1398,6 +1398,7 @@ static int eth_init_one(struct platform_device *pdev) return -ENOMEM; SET_NETDEV_DEV(dev, &pdev->dev); + dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
Hmmm, shouldn't this be the default value, set by the bus layer or similar?