[PATCH v6 2/2] dmaengine: Add Xilinx zynqmp dma engine driver support

kbuild test robot
2016-04-15T13:13:44Z

Hi Kedareswara,

[auto build test WARNING on robh/for-next]
[also build test WARNING on v4.6-rc3 next-20160415]
[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/Kedareswara-rao-Appana/Documentation-DT-dma-Add-Xilinx-zynqmp-dma-device-tree-binding-documentation/20160415-165623
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux for-next
config: sparc64-allmodconfig (attached as .config)
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=sparc64

All warnings (new ones prefixed by >>):

drivers/dma/xilinx/zynqmp_dma.c: In function 'zynqmp_dma_config_sg_ll_desc':
>> drivers/dma/xilinx/zynqmp_dma.c:371:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
((dma_addr_t)sdesc - (dma_addr_t)chan->desc_pool_v);
^
drivers/dma/xilinx/zynqmp_dma.c:371:29: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
((dma_addr_t)sdesc - (dma_addr_t)chan->desc_pool_v);
^

vim +371 drivers/dma/xilinx/zynqmp_dma.c

355 struct zynqmp_dma_desc_ll *prev)
356 {
357 struct zynqmp_dma_desc_ll *ddesc = sdesc + 1;
358
359 sdesc->size = ddesc->size = len;
360 sdesc->addr = src;
361 ddesc->addr = dst;
362
363 sdesc->ctrl = ddesc->ctrl = ZYNQMP_DMA_DESC_CTRL_SIZE_256;
364 if (chan->is_dmacoherent) {
365 sdesc->ctrl |= ZYNQMP_DMA_DESC_CTRL_COHRNT;
366 ddesc->ctrl |= ZYNQMP_DMA_DESC_CTRL_COHRNT;
367 }
368
369 if (prev) {
370 dma_addr_t addr = chan->desc_pool_p +
> 371 ((dma_addr_t)sdesc - (dma_addr_t)chan->desc_pool_v);
372 ddesc = prev + 1;
373 prev->nxtdscraddr = addr;
374 ddesc->nxtdscraddr = addr + ZYNQMP_DMA_DESC_SIZE(chan);
375 }
376 }
377
378 /**
379 * zynqmp_dma_init - Initialize the channel

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
-------------- next part --------------
A non-text attachment was scrubbed...
Name: .config.gz
Type: application/octet-stream
Size: 45798 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20160415/01ab2406/attachment-0001.obj>