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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: Andre Wolokita <Andre.Wolokita@analog.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Andre Wolokita 2015-03-16 12:54:50 +11:00 committed by Herbert Xu
parent 1a5addfe82
commit 656d7e7ee3
1 changed files with 1 additions and 1 deletions
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2
drivers/char/hw_random/omap-rng.c
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@ -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;