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SubjectRe: [PATCH V02 3/5] dmaengine: core: Introduce new, universal API to request a channel
Hi Peter,

[auto build test WARNING on slave-dma/next]
[also build test WARNING on v4.4-rc5 next-20151214]

url: https://github.com/0day-ci/linux/commits/Peter-Ujfalusi/dmaengine-core-Skip-mask-matching-when-it-is-not-provided-to-private_candidate/20151214-192521
base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/slave-dma.git next


coccinelle warnings: (new ones prefixed by >>)

>> drivers/dma/dmaengine.c:715:23-30: ERROR: PTR_ERR applied after initialization to constant on line 703

vim +715 drivers/dma/dmaengine.c

697 *
698 * Returns pointer to appropriate DMA channel on success or an error pointer.
699 */
700 struct dma_chan *dma_request_chan(struct device *dev, const char *name)
701 {
702 struct dma_device *d, *_d;
> 703 struct dma_chan *chan = NULL;
704
705 /* If device-tree is present get slave info from here */
706 if (dev->of_node)
707 chan = of_dma_request_slave_channel(dev->of_node, name);
708
709 /* If device was enumerated by ACPI get slave info from here */
710 if (has_acpi_companion(dev) && !chan)
711 chan = acpi_dma_request_slave_chan_by_name(dev, name);
712
713 if (chan) {
714 /* Valid channel found or requester need to be deferred */
> 715 if (!IS_ERR(chan) || PTR_ERR(chan) == -EPROBE_DEFER)
716 return chan;
717 }
718

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


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