hwrng: imx-rngc - simpler check for available random bytes

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The "level" field in the status register contains the number of random
bytes that are available in the FIFO.  Use GENMASK to extract this field.
We only want to check if level is 0 or if we can read another byte.
There's no need for the shift or the level variable.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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Martin Kaiser 2023-05-19 18:04:31 +02:00 • committed by Herbert Xu

parent b7be31b0d5

commit 97ecafc4f6

1 changed files with 3 additions and 8 deletions

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drivers/char/hw_random/imx-rngc.c

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