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When module size > DMA buffer size, driver copies first chunk and waits for the BDL complete interrupt. BDL complete interrupt never occurs and wait time expires as module load IPC is not send to start the DMA from DSP. To fix the above issue need to follow the below steps: 1. After copying the first chunk, send the module load IPC to start the DMA. 2. Wait for the BDL interrupt. Once interrupt is received, copy the next chunk. 3. Continue step 2 till all bytes are copied. 4. When all the bytes are copied (bytes_left = 0), wait for module load IPC response 5. Handled module load IPC response messages, check the load module IPC response and wake up the thread to complete module load. Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.