ASoC: topology: Only use valid names of PCM for the kernel DAI & DAI link
User space may not always set a valid FE DAI driver's name, FE DAI link's name, stream name or cpu DAI name. In such cases, there are all ZERO in these name string buffers of a topology PCM object. This patch will only duplicate valid name strings for kernel FE DAI driver and DAI link when creating them from topology, and free the name strings when destroying them. Signed-off-by: NMengdong Lin <mengdong.lin@linux.intel.com> Signed-off-by: NMark Brown <broonie@kernel.org>
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