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It seems that accessing registers during disconnection often leads to the GPU pipe error. The original driver had a similar check in the past, but it was lost through refactoring. Now put a connection check in the register access functions. One exception is the irq handler: it still needs to access the raw register even while disconnected, because it has to read and write to ACK the irq mask. Although the irq shouldn't be raised while disconnected (the stream should have been disabled), let's make it safer for now. Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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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.