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SubjectRe: [PATCH 1/2] drivers: dma-coherent: Add support for default DMA coherent pool
Hi George,

[auto build test ERROR on staging/staging-testing]
[also build test ERROR on v4.12]
[cannot apply to next-20170704]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/vitaly_kuzmichev-mentor-com/drivers-dma-coherent-Add-support-for-default-DMA-coherent-pool/20170705-040238
config: i386-randconfig-c0-07051154 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All error/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/io.h:21,
from drivers//base/dma-coherent.c:5:
drivers//base/dma-coherent.c: In function 'dev_get_dma_area':
>> drivers//base/dma-coherent.c:28:16: error: 'struct device' has no member named 'cma_area'
if (dev && dev->cma_area)
^
include/linux/compiler.h:160:30: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^
>> drivers//base/dma-coherent.c:28:2: note: in expansion of macro 'if'
if (dev && dev->cma_area)
^
>> drivers//base/dma-coherent.c:28:16: error: 'struct device' has no member named 'cma_area'
if (dev && dev->cma_area)
^
include/linux/compiler.h:160:42: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^
>> drivers//base/dma-coherent.c:28:2: note: in expansion of macro 'if'
if (dev && dev->cma_area)
^
>> drivers//base/dma-coherent.c:28:16: error: 'struct device' has no member named 'cma_area'
if (dev && dev->cma_area)
^
include/linux/compiler.h:171:16: note: in definition of macro '__trace_if'
______r = !!(cond); \
^
>> drivers//base/dma-coherent.c:28:2: note: in expansion of macro 'if'
if (dev && dev->cma_area)
^

vim +28 drivers//base/dma-coherent.c

1 /*
2 * Coherent per-device memory handling.
3 * Borrowed from i386
4 */
> 5 #include <linux/io.h>
6 #include <linux/slab.h>
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/dma-mapping.h>
10
11 struct dma_coherent_mem {
12 void *virt_base;
13 dma_addr_t device_base;
14 unsigned long pfn_base;
15 int size;
16 int flags;
17 unsigned long *bitmap;
18 spinlock_t spinlock;
19 };
20
21 static struct dma_coherent_mem **dma_coherent_default_area;
22
23 static inline struct dma_coherent_mem *dev_get_dma_area(struct device *dev)
24 {
25 if (dev && dev->dma_mem)
26 return dev->dma_mem;
27 #ifdef CONFIG_CMA
> 28 if (dev && dev->cma_area)
29 return NULL;
30 #endif
31 return dma_coherent_default_area ? *dma_coherent_default_area : NULL;

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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