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Mauro Carvalho Chehab committed 9fda5130d31
docs: DMA-API-HOWTO: add a missing "=" The === line is shorter than the section title. As this will generate a warning with rst build, fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>