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author | Grant Likely <grant.likely@linaro.org> | 2013-09-15 22:32:39 +0100 |
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committer | Grant Likely <grant.likely@linaro.org> | 2013-10-24 11:43:04 +0100 |
commit | 2361613206e66ce59cc0e08efa8d98ec15b84ed1 (patch) | |
tree | 5e4f5fc33f715202f71770890dcc09ac09a2d851 /Documentation/rt-mutex.txt | |
parent | e6d30ab1e7d1281784672c0fc2ffa385cfb7279e (diff) | |
download | linux-2361613206e66ce59cc0e08efa8d98ec15b84ed1.tar.gz |
of/irq: Refactor interrupt-map parsing
All the users of of_irq_parse_raw pass in a raw interrupt specifier from the device tree and expect it to be returned (possibly modified) in an of_phandle_args structure. However, the primary function of of_irq_parse_raw() is to check for translations due to the presence of one or more interrupt-map properties. The actual placing of the data into an of_phandle_args structure is trivial. If it is refactored to accept an of_phandle_args structure directly, then it becomes possible to consume of_phandle_args from other sources. This is important for an upcoming patch that allows a device to be connected to more than one interrupt parent. It also simplifies the code a bit. The biggest complication with this patch is that the old version works on the interrupt specifiers in __be32 form, but the of_phandle_args structure is intended to carry it in the cpu-native version. A bit of churn was required to make this work. In the end it results in tighter code, so the churn is worth it. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'Documentation/rt-mutex.txt')
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