Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
media: vivid: use prandom
This is part of a prandom cleanup, which removes
next_pseudo_random32 and replaces it with the standard PRNG.
Signed-off-by: Markus Theil <theil.markus@gmail.com>
Reviewed-by: Krzysztof Karas <krzysztof.karas@intel.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
authored by
Markus Theil
and committed by
Jason A. Donenfeld
8c0cf654
a6a4d97f
+3
-1
+3
-1
drivers/media/test-drivers/vivid/vivid-vid-cap.c
+3
-1
drivers/media/test-drivers/vivid/vivid-vid-cap.c
···
302
302
*/
303
303
freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
304
304
if (freq_modulus > 2 * 16) {
305
+
struct rnd_state prng;
306
+
prandom_seed_state(&prng, dev->tv_freq ^ 0x55);
305
307
tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
306
-
next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
308
+
prandom_u32_state(&prng) & 0x3f);
307
309
return;
308
310
}
309
311
if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)