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Commit 656d7e7e authored by Andre Wolokita's avatar Andre Wolokita Committed by Herbert Xu
Browse files

hwrng: omap - Change RNG_CONFIG_REG to RNG_CONTROL_REG in init 



omap4_rng_init() checks bit 10 of the RNG_CONFIG_REG to determine whether
the RNG is already running before performing any initiliasation. This is not
the correct register to check, as the enable bit is in RNG_CONFIG_CONTROL.
Read from RNG_CONTROL_REG instead.

Signed-off-by: default avatarAndre Wolokita <Andre.Wolokita@analog.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 1a5addfe

drivers/char/hw_random/omap-rng.c

+1 −1
Original line number Diff line number Diff line
@@ -236,7 +236,7 @@ static int omap4_rng_init(struct omap_rng_dev *priv) 
	u32 val;



	/* Return if RNG is already running. */

	if (omap_rng_read(priv, RNG_CONFIG_REG) & RNG_CONTROL_ENABLE_TRNG_MASK)

	if (omap_rng_read(priv, RNG_CONTROL_REG) & RNG_CONTROL_ENABLE_TRNG_MASK)

		return 0;



	val = RNG_CONFIG_MIN_REFIL_CYCLES << RNG_CONFIG_MIN_REFIL_CYCLES_SHIFT;