On 24/05/16 09:50, Maxime Coquelin wrote:
diff --git a/drivers/char/hw_random/stm32-rng.c
b/drivers/char/hw_random/stm32-rng.c
index 92a810648bd0..2a0fc90e4dc3 100644
--- a/drivers/char/hw_random/stm32-rng.c
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -68,6 +68,10 @@ static int stm32_rng_read(struct hwrng *rng, void
*data, size_t max, bool wait)
} while (!sr && --timeout);
}
+ if (WARN_ONCE(sr & (RNG_SR_SEIS | RNG_SR_CEIS),
+ "bad RNG status - %x\n", sr))
+ writel_relaxed(0, priv->base + RNG_SR);
+
/* If error detected or data not ready... */
if (sr != RNG_SR_DRDY)
break;
Minor quibble but I might prefer that the error handling/recovery
actually be put on the error path itself (included in the if (sr !=
RNG_SR_DRDY) ).
Daniel.
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