Hi, On Thu, Apr 09, 2015 at 10:42:15AM +0200, Yegor Yefremov wrote: > I see this during the boot: > > platform musb-hdrc.1.auto: Driver musb-hdrc requests probe deferral > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 1 at drivers/dma/dmaengine.c:863 > dma_async_device_register+0x2a8/0x4d8() > this driver doesn't support generic slave capabilities reporting > Modules linked in: > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-rc7 #1 > Hardware name: Generic AM33XX (Flattened Device Tree) > [<c0015ce4>] (unwind_backtrace) from [<c0012370>] (show_stack+0x10/0x14) > [<c0012370>] (show_stack) from [<c05f7a2c>] (dump_stack+0x84/0x9c) > [<c05f7a2c>] (dump_stack) from [<c003d868>] (warn_slowpath_common+0x7c/0xb8) > [<c003d868>] (warn_slowpath_common) from [<c003d8d4>] > (warn_slowpath_fmt+0x30/0x40) > [<c003d8d4>] (warn_slowpath_fmt) from [<c02dd5f8>] > (dma_async_device_register+0x2a8/0x4d8) > [<c02dd5f8>] (dma_async_device_register) from [<c02e1a14>] > (cppi41_dma_probe+0x3f4/0x470) > [<c02e1a14>] (cppi41_dma_probe) from [<c032152c>] (platform_drv_probe+0x44/0xa4) > [<c032152c>] (platform_drv_probe) from [<c031fc48>] > (driver_probe_device+0x104/0x23c) > [<c031fc48>] (driver_probe_device) from [<c031e27c>] > (bus_for_each_drv+0x64/0x98) > [<c031e27c>] (bus_for_each_drv) from [<c031fb10>] (device_attach+0x74/0x8c) > [<c031fb10>] (device_attach) from [<c031f1f4>] (bus_probe_device+0x88/0xb0) > [<c031f1f4>] (bus_probe_device) from [<c031d56c>] (device_add+0x378/0x520) > [<c031d56c>] (device_add) from [<c045c588>] > (of_platform_device_create_pdata+0xe8/0x144) > [<c045c588>] (of_platform_device_create_pdata) from [<c045c6cc>] > (of_platform_bus_create+0xdc/0x18c) > [<c045c6cc>] (of_platform_bus_create) from [<c045c8a8>] > (of_platform_populate+0x5c/0xac) > [<c045c8a8>] (of_platform_populate) from [<c0402a7c>] > (am335x_child_probe+0x28/0x44) > [<c0402a7c>] (am335x_child_probe) from [<c032152c>] > (platform_drv_probe+0x44/0xa4) > [<c032152c>] (platform_drv_probe) from [<c031fc48>] > (driver_probe_device+0x104/0x23c) > [<c031fc48>] (driver_probe_device) from [<c031fe58>] (__driver_attach+0x94/0x98) > [<c031fe58>] (__driver_attach) from [<c031e1d0>] (bus_for_each_dev+0x6c/0xa0) > [<c031e1d0>] (bus_for_each_dev) from [<c031f46c>] (bus_add_driver+0x144/0x1f0) > [<c031f46c>] (bus_add_driver) from [<c03205b0>] (driver_register+0x78/0xf8) > [<c03205b0>] (driver_register) from [<c0008b84>] (do_one_initcall+0x80/0x1dc) > [<c0008b84>] (do_one_initcall) from [<c087fd88>] > (kernel_init_freeable+0x110/0x1d8) > [<c087fd88>] (kernel_init_freeable) from [<c05f472c>] (kernel_init+0x8/0xec) > [<c05f472c>] (kernel_init) from [<c000e910>] (ret_from_fork+0x14/0x24) > ---[ end trace e3462ce3acfe8469 ]--- > > So far I could only find this patch, but it is > drivers/dma/qcom_bam_dma.c related: https://lkml.org/lkml/2015/3/5/324 > > My DTS: https://github.com/visionsystemsgmbh/onrisc_br_bsp/blob/master/board/vscom/dts/3.15/onrisc-baltos-ir-5221.dts try this patch: https://marc.info/?l=linux-usb&m=142851161717345&w=2 -- balbi
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