2013/4/9 Lee Jones <lee.jo...@linaro.org>: > Someone has spent a fair amount of effort writing a runtime configuration > changing algorithm for DMA clients. However, the config appears to never > actually make it to hardware. In order for the configuration to take hold > we need to issue a d40_config_write(), as this is the routine which writes > it into the hardware's registers.
No, it's not. This function is only for initial configuration which should only be written when the channel is allocated. In fact, by calling it here in runtime_config, you are introducing a serious bug: other logical channels on the same physical channel will stop because of the SSLNK/SDLNK of the physical channel being zeroed. The runtime config already makes it the hardware in the existing code, via d40_*_cfg(). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
