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The variable dma_is_rxing is currently set to 1 in imx_disable_rx_int(). This is problematic as: - whilst imx_disable_rx_int() is currently always called before start_rx_dma() this dependency isn't obvious. - start_rx_dma() does error checking and might exit without enabling DMA. Currently this will result in dma_is_rxing suggesting that DMA is being used for recieving. To avoid these issues, move the setting of dma_is_rxing to start_rx_dma() when appropriate. Signed-off-by: Romain Perier <romain.perier@collabora.com> Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.