drivers: entropy: mcux_trng: fix error after reset #37626
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dleach02
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platform: NXP
dleach02
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MaureenHelm,
hakehuang,
mmahadevan108 and
pdgendt
There are situations after certain types of resets of the board, that the underlying TRNG IP reports an error when making a request for TRNG_GetRandomData(). The function will clear the error bit but doesn't try to retrieve the entropy data so this change will retry once on the error. The observation is that the error only occurs once and since this function is likely only called a couple of times to provide a seed to RNG functions there is little impact. fixes: #37619 Signed-off-by: David Leach <[email protected]>
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Turns out the fix is also in the SDK 2.10 driver which is an active PR |
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There are situations after certain types of resets of the
board, that the underlying TRNG IP reports an error when
making a request for TRNG_GetRandomData(). The function
will clear the error bit but doesn't try to retrieve the
entropy data so this change will retry once on the error.
The observation is that the error only occurs once and
since this function is likely only called a couple of
times to provide a seed to RNG functions there is little
impact.
Fixes #37619
Signed-off-by: David Leach [email protected]