diff options
| author | Sylvain \\\"ythier\\\" Hitier <sylvain.hitier@gmail.com> | 2014-10-07 13:40:34 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-10-15 12:29:23 +0200 |
| commit | f823cda9b841d142930e3de51dfda6cd245a2f83 (patch) | |
| tree | d4c4ad8be4f0203a1453db4fdf9106c6d80677c9 /drivers/net | |
| parent | 404db05025f2fb873b0569a99cf541519fec607f (diff) | |
3c59x: fix bad split of cpu_to_le32(pci_map_single())
[ Upstream commit 88b09a6d958af6c458acf055ee2eb5bc9564efda ]
In commit 6f2b6a3005b2c34c39f207a87667564f64f2f91a,
# 3c59x: Add dma error checking and recovery
the intent is to split out the mapping from the byte-swapping in order to
insert a dma_mapping_error() check.
Kinda this semantic patch:
// See http://coccinelle.lip6.fr/
//
// Beware, grouik-and-dirty!
@@
expression DEV, X, Y, Z;
@@
- cpu_to_le32(pci_map_single(DEV, X, Y, Z))
+ dma_addr_t addr = pci_map_single(DEV, X, Y, Z);
+ if (dma_mapping_error(&DEV->dev, addr))
+ /* snip */;
+ cpu_to_le32(addr)
However, the #else part (of the #if DO_ZEROCOPY test) is changed this way:
- cpu_to_le32(pci_map_single(DEV, X, Y, Z))
+ dma_addr_t addr = cpu_to_le32(pci_map_single(DEV, X, Y, Z));
// ^^^^^^^^^^^
// That mismatches the 3 other changes!
+ if (dma_mapping_error(&DEV->dev, addr))
+ /* snip */;
+ cpu_to_le32(addr)
Let's remove the leftover cpu_to_le32() for coherency.
v2: Better changelog.
v3: Add Acked-by
Fixes: 6f2b6a3005b2c34c39f207a87667564f64f2f91a
# 3c59x: Add dma error checking and recovery
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Sylvain "ythier" Hitier <sylvain.hitier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/3com/3c59x.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/3com/3c59x.c b/drivers/net/ethernet/3com/3c59x.c index 8ca49f04acec..0a3108b3c267 100644 --- a/drivers/net/ethernet/3com/3c59x.c +++ b/drivers/net/ethernet/3com/3c59x.c @@ -2214,7 +2214,7 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev) } } #else - dma_addr = cpu_to_le32(pci_map_single(VORTEX_PCI(vp), skb->data, skb->len, PCI_DMA_TODEVICE)); + dma_addr = pci_map_single(VORTEX_PCI(vp), skb->data, skb->len, PCI_DMA_TODEVICE); if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma_addr)) goto out_dma_err; vp->tx_ring[entry].addr = cpu_to_le32(dma_addr); |