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dwapb_irq_set_type overwrites polarity register value for IRQ_TYPE_EDGE_BOTH case. If the polarity of one gpio is 0 by default, then it will set falling edge irq trigger. and the gpio may requires rising edge irq for the first time, and it will be missed. Do not overwrite polarity register for IRQ_TYPE_EDGE_BOTH case can solve this issue. Signed-off-by: Xiaoguang Chen <xgchenshy@gmail.com> Tested-by: Jisheng Zhang <jszhang@marvell.com> [Fix some really weird text encoding problem] Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
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| README | ||
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.