Re: [PATCH] mptlan: add checks for dma mapping errors
From: kbuild test robot
Date: Fri Jan 22 2016 - 21:04:14 EST
Hi Alexey,
[auto build test WARNING on v4.4-rc8]
[also build test WARNING on next-20160122]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/Alexey-Khoroshilov/mptlan-add-checks-for-dma-mapping-errors/20160123-070633
config: x86_64-randconfig-s1-01230930 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
In file included from include/uapi/linux/stddef.h:1:0,
from include/linux/stddef.h:4,
from include/uapi/linux/posix_types.h:4,
from include/uapi/linux/types.h:13,
from include/linux/types.h:5,
from include/linux/list.h:4,
from include/linux/module.h:9,
from drivers/message/fusion/mptlan.h:55,
from drivers/message/fusion/mptlan.c:55:
drivers/message/fusion/mptlan.c: In function 'mpt_lan_sdu_send':
drivers/message/fusion/mptlan.c:737:24: warning: passing argument 1 of 'dma_mapping_error' from incompatible pointer type [-Wincompatible-pointer-types]
if (dma_mapping_error(mpt_dev->pcidev, dma)) {
^
include/linux/compiler.h:147:28: note: in definition of macro '__trace_if'
if (__builtin_constant_p((cond)) ? !!(cond) : \
^
>> drivers/message/fusion/mptlan.c:737:2: note: in expansion of macro 'if'
if (dma_mapping_error(mpt_dev->pcidev, dma)) {
^
In file included from arch/x86/include/asm/dma-mapping.h:49:0,
from include/linux/dma-mapping.h:87,
from include/linux/skbuff.h:34,
from include/linux/if_ether.h:23,
from include/uapi/linux/ethtool.h:17,
from include/linux/ethtool.h:16,
from include/linux/netdevice.h:42,
from drivers/message/fusion/mptlan.h:58,
from drivers/message/fusion/mptlan.c:55:
include/asm-generic/dma-mapping-common.h:316:19: note: expected 'struct device *' but argument is of type 'struct pci_dev *'
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
^
In file included from include/uapi/linux/stddef.h:1:0,
from include/linux/stddef.h:4,
from include/uapi/linux/posix_types.h:4,
from include/uapi/linux/types.h:13,
from include/linux/types.h:5,
from include/linux/list.h:4,
from include/linux/module.h:9,
from drivers/message/fusion/mptlan.h:55,
from drivers/message/fusion/mptlan.c:55:
drivers/message/fusion/mptlan.c:737:24: warning: passing argument 1 of 'dma_mapping_error' from incompatible pointer type [-Wincompatible-pointer-types]
if (dma_mapping_error(mpt_dev->pcidev, dma)) {
^
include/linux/compiler.h:147:40: note: in definition of macro '__trace_if'
if (__builtin_constant_p((cond)) ? !!(cond) : \
^
>> drivers/message/fusion/mptlan.c:737:2: note: in expansion of macro 'if'
if (dma_mapping_error(mpt_dev->pcidev, dma)) {
^
In file included from arch/x86/include/asm/dma-mapping.h:49:0,
from include/linux/dma-mapping.h:87,
from include/linux/skbuff.h:34,
from include/linux/if_ether.h:23,
from include/uapi/linux/ethtool.h:17,
from include/linux/ethtool.h:16,
from include/linux/netdevice.h:42,
from drivers/message/fusion/mptlan.h:58,
from drivers/message/fusion/mptlan.c:55:
include/asm-generic/dma-mapping-common.h:316:19: note: expected 'struct device *' but argument is of type 'struct pci_dev *'
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
^
In file included from include/uapi/linux/stddef.h:1:0,
from include/linux/stddef.h:4,
from include/uapi/linux/posix_types.h:4,
from include/uapi/linux/types.h:13,
from include/linux/types.h:5,
from include/linux/list.h:4,
from include/linux/module.h:9,
from drivers/message/fusion/mptlan.h:55,
from drivers/message/fusion/mptlan.c:55:
drivers/message/fusion/mptlan.c:737:24: warning: passing argument 1 of 'dma_mapping_error' from incompatible pointer type [-Wincompatible-pointer-types]
if (dma_mapping_error(mpt_dev->pcidev, dma)) {
^
include/linux/compiler.h:158:16: note: in definition of macro '__trace_if'
______r = !!(cond); \
^
>> drivers/message/fusion/mptlan.c:737:2: note: in expansion of macro 'if'
if (dma_mapping_error(mpt_dev->pcidev, dma)) {
^
In file included from arch/x86/include/asm/dma-mapping.h:49:0,
from include/linux/dma-mapping.h:87,
from include/linux/skbuff.h:34,
from include/linux/if_ether.h:23,
from include/uapi/linux/ethtool.h:17,
from include/linux/ethtool.h:16,
from include/linux/netdevice.h:42,
from drivers/message/fusion/mptlan.h:58,
from drivers/message/fusion/mptlan.c:55:
include/asm-generic/dma-mapping-common.h:316:19: note: expected 'struct device *' but argument is of type 'struct pci_dev *'
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
^
vim +/if +737 drivers/message/fusion/mptlan.c
721 ctx = priv->mpt_txfidx[priv->mpt_txfidx_tail--];
722 spin_unlock_irqrestore(&priv->txfidx_lock, flags);
723
724 // dioprintk((KERN_INFO MYNAM ": %s/%s: Creating new msg frame (send).\n",
725 // IOC_AND_NETDEV_NAMES_s_s(dev)));
726
727 pSendReq = (LANSendRequest_t *) mf;
728
729 /* Set the mac.raw pointer, since this apparently isn't getting
730 * done before we get the skb. Pull the data pointer past the mac data.
731 */
732 skb_reset_mac_header(skb);
733 skb_pull(skb, 12);
734
735 dma = pci_map_single(mpt_dev->pcidev, skb->data, skb->len,
736 PCI_DMA_TODEVICE);
> 737 if (dma_mapping_error(mpt_dev->pcidev, dma)) {
738 netif_stop_queue(dev);
739
740 printk (KERN_ERR "%s: dma mapping failed\n", __func__);
741 return NETDEV_TX_BUSY;
742 }
743
744 priv->SendCtl[ctx].skb = skb;
745 priv->SendCtl[ctx].dma = dma;
---
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