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hwrng: st - Improve FIFO size/depth description 

The original representation of FIFO size in the driver coupled with the
ambiguity in the documentation meant that it was easy to confuse readers.
This lead to a false positive BUG-find and subsequently time wastage
debugging this phantom issue.

Hopefully this patch can prevent future readers from falling into the
same trap.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Lee Jones 2015-10-07 13:23:29 +01:00 committed by Herbert Xu
parent 93d649bd94
commit 9ad92bdff7
1 changed files with 2 additions and 1 deletions
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3
drivers/char/hw_random/st-rng.c
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@ -29,8 +29,9 @@
#define ST_RNG_STATUS_BAD_ALTERNANCE BIT(1)
#define ST_RNG_STATUS_FIFO_FULL BIT(5)
#define ST_RNG_FIFO_SIZE 8
#define ST_RNG_SAMPLE_SIZE 2 /* 2 Byte (16bit) samples */
#define ST_RNG_FIFO_DEPTH 4
#define ST_RNG_FIFO_SIZE (ST_RNG_FIFO_DEPTH * ST_RNG_SAMPLE_SIZE)
/*
* Samples are documented to be available every 0.667us, so in theory