hwrng: timeriomem - Remove 'max < 4' condition check

In read routiene max is always >= 4. The check whether 'max < 4' is not
necessary. Remove it.

Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Acked-By: Rick Altherr <raltherr@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/char/hw_random/timeriomem-rng.c

@@ -52,13 +52,6 @@ static int timeriomem_rng_read(struct hwrng *hwrng, void *data,
 	int retval = 0;
 	int period_us = ktime_to_us(priv->period);
 
-	/*
-	 * The RNG provides 32-bits per read.  Ensure there is enough space for
-	 * at minimum one read.
-	 */
-	if (max < sizeof(u32))
-		return 0;
-
 	/*
 	 * There may not have been enough time for new data to be generated
 	 * since the last request.  If the caller doesn't want to wait, let them