Tomoki Sekiyama 564246fd3f media: siano: Fix coherent memory allocation failure on arm64 ... On some architectures such as arm64, siano chip based TV-tuner USB devices are not recognized correctly due to coherent memory allocation failure with the following error: [ 663.556135] usbcore: deregistering interface driver smsusb [ 683.624809] smsusb:smsusb_probe: board id=18, interface number 0 [ 683.633530] smsusb:smsusb_init_device: smscore_register_device(...) failed, rc -12 [ 683.641501] smsusb:smsusb_probe: Device initialized with return code -12 [ 683.652978] smsusb: probe of 1-1:1.0 failed with error -12 This is caused by dma_alloc_coherent(NULL, ...) returning NULL in smscoreapi.c. To fix this error, allocate the buffer memory for the USB devices via kmalloc() and let the USB core do the DMA mapping and free. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>		2018-03-06 12:46:15 -05:00
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smsusb.c	media: siano: Fix coherent memory allocation failure on arm64	2018-03-06 12:46:15 -05:00