Commit 39a3b3c7 authored Nov 16, 2020 by Giancarlo Stasi Committed by Anas Nashif Mar 18, 2021

drivers: entropy: stm32: fix discarding of false negative rng values



Function random_byte_get() returns only the least significant byte of
the 32-bit random datum, as this is the used value, so avoiding that
higher numbers are interpreted as negative error codes and their value
is not discarded.

Signed-off-by: Giancarlo Stasi <giancarlo.stasi.co@gmail.com>

parent 41ca34a7

drivers/entropy/entropy_stm32.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -127,6 +127,7 @@ static int random_byte_get(void)
		} else {
		retval = LL_RNG_ReadRandData32(
		entropy_stm32_rng_data.rng);
		retval &= 0xFF;
		}
		}

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