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linux/kernel.h: Add ALIGN_DOWN macro

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Few parts of kernel define their own macro for aligning down so provide
a common define for this, with the same usage and assumptions as existing
ALIGN.

Convert also three existing implementations to this one.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Krzysztof Kozlowski 2017-04-11 20:08:34 +02:00 • committed by Herbert Xu
commit ed067d4a85
4 changed files with 3 additions and 4 deletions
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include/video/udlfb.h
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@ -92,6 +92,6 @@ struct dlfb_data {
/* remove these once align.h patch is taken into kernel */
#define DL_ALIGN_UP(x, a) ALIGN(x, a)
#define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)
#define DL_ALIGN_DOWN(x, a) ALIGN_DOWN(x, a)
#endif