staging: most: Using macro DIV_ROUND_UP
The macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /(d)). It clarifies the divisor calculations. This occurence was detected using the coccinelle script: @@ expression e1; expression e2; @@ ( - ((e1) + e2 - 1) / (e2) + DIV_ROUND_UP(e1,e2) | - ((e1) + (e2 - 1)) / (e2) + DIV_ROUND_UP(e1,e2) ) Signed-off-by: simran singhal <singhalsimran0@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -18,6 +18,7 @@
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#include "dim2_errors.h"
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#include "dim2_reg.h"
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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/*
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* Size factor for isochronous DBR buffer.
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@ -49,7 +50,7 @@
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#define DBR_SIZE (16 * 1024) /* specified by IP */
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#define DBR_BLOCK_SIZE (DBR_SIZE / 32 / DBR_MAP_SIZE)
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#define ROUND_UP_TO(x, d) (((x) + (d) - 1) / (d) * (d))
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#define ROUND_UP_TO(x, d) (DIV_ROUND_UP(x, (d)) * (d))
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/* -------------------------------------------------------------------------- */
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/* generic helper functions and macros */
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@ -117,7 +118,7 @@ static int alloc_dbr(u16 size)
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return DBR_SIZE; /* out of memory */
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for (i = 0; i < DBR_MAP_SIZE; i++) {
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u32 const blocks = (size + DBR_BLOCK_SIZE - 1) / DBR_BLOCK_SIZE;
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u32 const blocks = DIV_ROUND_UP(size, DBR_BLOCK_SIZE);
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u32 mask = ~((~(u32)0) << blocks);
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do {
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@ -137,7 +138,7 @@ static int alloc_dbr(u16 size)
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static void free_dbr(int offs, int size)
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{
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int block_idx = offs / DBR_BLOCK_SIZE;
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u32 const blocks = (size + DBR_BLOCK_SIZE - 1) / DBR_BLOCK_SIZE;
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u32 const blocks = DIV_ROUND_UP(size, DBR_BLOCK_SIZE);
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u32 mask = ~((~(u32)0) << blocks);
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mask <<= block_idx % 32;
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