| Commit message (Collapse) | Author | Age | Files | Lines |
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Fix the missing clk_disable_unprepare() before return
from st_rng_probe() in the error handling case.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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HW RNG core never asks for data less than 4 bytes. The check whether max
is less than 4 bytes is unnecessary. Remove the check.
Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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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>
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Samples are documented to be available every 0.667us, so in theory
the 8 sample deep FIFO should take 5.336us to fill. However, during
thorough testing, it became apparent that filling the FIFO actually
takes closer to 12us.
Also take into consideration that udelay() can behave oddly i.e. not
delay for as long as requested.
Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk>:
"IIRC, Linus recommends a x2 factor on delays, especially
timeouts generated by these functions.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Kieran Bingham <kieranbingham@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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