linux-kernel - Re: [4.4 regression] 46a7fd8a : pcnet32: use pci_set_dma_mask insted of pci_dma

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Date:	Wed, 11 Nov 2015 12:58:22 +0100
From:	Christoph Hellwig <hch@....de>
To:	허종만 <jongman.heo@...sung.com>
Cc:	linux-kernel@...r.kernel.org, pcnet32@...ntier.com
Subject: Re: [4.4 regression] 46a7fd8a : pcnet32: use pci_set_dma_mask
	insted of pci_dma_supported

Can you try the patch below?

diff --git a/drivers/net/ethernet/amd/pcnet32.c b/drivers/net/ethernet/amd/pcnet32.c
index e2afabf..7ccebae 100644
--- a/drivers/net/ethernet/amd/pcnet32.c
+++ b/drivers/net/ethernet/amd/pcnet32.c
@@ -1500,10 +1500,11 @@ pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
 		return -ENODEV;
 	}
 
-	if (!pci_set_dma_mask(pdev, PCNET32_DMA_MASK)) {
+	err = pci_set_dma_mask(pdev, PCNET32_DMA_MASK);
+	if (err) {
 		if (pcnet32_debug & NETIF_MSG_PROBE)
 			pr_err("architecture does not support 32bit PCI busmaster DMA\n");
-		return -ENODEV;
+		return err;
 	}
 	if (!request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci")) {
 		if (pcnet32_debug & NETIF_MSG_PROBE)
--
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