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Date: Wed, 30 May 2018 13:03:51 +1000 From: Finn Thain <fthain@...egraphics.com.au> To: "David S. Miller" <davem@...emloft.net> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH net] net/sonic: Use dma_mapping_error() With CONFIG_DMA_API_DEBUG=y, calling sonic_open() produces the message, "DMA-API: device driver failed to check map error". Add the missing dma_mapping_error() call. Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de> Signed-off-by: Finn Thain <fthain@...egraphics.com.au> --- drivers/net/ethernet/natsemi/sonic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/natsemi/sonic.c b/drivers/net/ethernet/natsemi/sonic.c index 7ed08486ae23..c805dcbebd02 100644 --- a/drivers/net/ethernet/natsemi/sonic.c +++ b/drivers/net/ethernet/natsemi/sonic.c @@ -84,7 +84,7 @@ static int sonic_open(struct net_device *dev) for (i = 0; i < SONIC_NUM_RRS; i++) { dma_addr_t laddr = dma_map_single(lp->device, skb_put(lp->rx_skb[i], SONIC_RBSIZE), SONIC_RBSIZE, DMA_FROM_DEVICE); - if (!laddr) { + if (dma_mapping_error(lp->device, laddr)) { while(i > 0) { /* free any that were mapped successfully */ i--; dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE); -- 2.16.1
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