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The current code here is really, really bad. A huge amount of it looks to be copy pasted, it has some weird hatred of arrays and code sharing, switch cases everywhere for things that really don't need them, and it makes the file seem immensely more complex then it actually is. This is a pain for maintanence, and is vulnerable to more weird irq handling bugs. So, let's start cleaning this up a bit. Modify all of the IRQ handlers for evergreen/si so that they just use for loops. As well, we add a helper function radeon_irq_kms_set_irq_n_enabled(), whose purpose is just to update the state of registers that enable/disable interrupts while printing any changes to the set of enabled interrupts to the kernel log. Note in this commit, since vblank/vline irq acking is intertwined with page flip irq acking, we can't cut out all of the copy paste in evergreen/si_irq_ack() just yet. Changes since v1: - Preserve order we write back all registers Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Lyude <lyude@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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.