[PATCH v2 2/3] media: vivid: use prandom
From: Markus Theil
Date: Tue Feb 11 2025 - 01:34:54 EST
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@xxxxxxxxx>
---
drivers/media/test-drivers/vivid/vivid-vid-cap.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
index b166d90177c6..166372d5f927 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
@@ -300,8 +300,10 @@ void vivid_update_quality(struct vivid_dev *dev)
*/
freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
if (freq_modulus > 2 * 16) {
+ struct rnd_state prng;
+ prandom_seed_state(&prng, dev->tv_freq ^ 0x55);
tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
- next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
+ prandom_u32_state(&prng) & 0x3f);
return;
}
if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
--
2.47.2