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[ Upstream commit 5dd195522562542bc6ebe6e7bd47890d8b7ca93c ] In the event of that any data error (like, IRQSTAT[DCE]) occurs during an eSDHC data transaction where DMA is used for data transfer to/from the system memory, setting the SYSCTL[RSTD] register may cause a system hang. If software sets the register SYSCTL[RSTD] to 1 for error recovery while DMA transferring is not complete, eSDHC may hang the system bus. This happens because the software register SYSCTL[RSTD] resets the DMA engine without waiting for the completion of pending system transactions. This erratum is to fix this issue. Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Sasha Levin <sashal@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.