Re: [PATCH v2 1/7] usb: musb: dsps: Manage CPPI 4.1 DMA interrupt in dsps

[kbuild test robot <lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

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Hi Alexandre,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.10-rc4 next-20170117]
[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/Alexandre-Bailon/dmaengine-cppi41-Make-CPPI-4-1-driver-more-generic/20170118-002219
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
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=xtensa 

All error/warnings (new ones prefixed by >>):

   drivers/usb/musb/musb_dsps.c: In function 'dsps_dma_controller_create':
>> drivers/usb/musb/musb_dsps.c:642:3: error: implicit declaration of function 'cppi41_register_dma_callback' [-Werror=implicit-function-declaration]
      cppi41_register_dma_callback(controller,
      ^
   drivers/usb/musb/musb_dsps.c: In function 'dsps_dma_controller_destroy':
>> drivers/usb/musb/musb_dsps.c:651:9: error: implicit declaration of function 'cppi41_dma_controller_to_musb' [-Werror=implicit-function-declaration]
     struct musb *musb = cppi41_dma_controller_to_musb(c);
            ^
>> drivers/usb/musb/musb_dsps.c:651:22: warning: initialization makes pointer from integer without a cast
     struct musb *musb = cppi41_dma_controller_to_musb(c);
                         ^
   drivers/usb/musb/musb_dsps.c: At top level:
   drivers/usb/musb/musb_dsps.c:633:1: warning: 'dsps_dma_controller_create' defined but not used [-Wunused-function]
    dsps_dma_controller_create(struct musb *musb, void __iomem *base)
    ^
   drivers/usb/musb/musb_dsps.c:649:13: warning: 'dsps_dma_controller_destroy' defined but not used [-Wunused-function]
    static void dsps_dma_controller_destroy(struct dma_controller *c)
                ^
   drivers/usb/musb/musb_dsps.c:659:13: warning: 'dsps_dma_controller_suspend' defined but not used [-Wunused-function]
    static void dsps_dma_controller_suspend(struct dsps_glue *glue)
                ^
   drivers/usb/musb/musb_dsps.c:666:13: warning: 'dsps_dma_controller_resume' defined but not used [-Wunused-function]
    static void dsps_dma_controller_resume(struct dsps_glue *glue)
                ^
   cc1: some warnings being treated as errors

vim +/cppi41_register_dma_callback +642 drivers/usb/musb/musb_dsps.c

   636		struct dsps_glue *glue = dev_get_drvdata(musb->controller->parent);
   637		void __iomem *usbss_base = glue->usbss_base;
   638	
   639		controller = cppi41_dma_controller_create(musb, base);
   640		if (!IS_ERR_OR_NULL(controller)) {
   641			musb_writel(usbss_base, USBSS_IRQ_ENABLER, USBSS_IRQ_PD_COMP);
 > 642			cppi41_register_dma_callback(controller,
   643						     dsps_dma_controller_callback);
   644		}
   645	
   646		return controller;
   647	}
   648	
   649	static void dsps_dma_controller_destroy(struct dma_controller *c)
   650	{
 > 651		struct musb *musb = cppi41_dma_controller_to_musb(c);
   652		struct dsps_glue *glue = dev_get_drvdata(musb->controller->parent);
   653		void __iomem *usbss_base = glue->usbss_base;
   654	

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