Replace explicit polling in tc_link_training() with equivalent call to tc_poll_timeout() for simplicity. No functional change intended (not including slightly altered debug output).
Signed-off-by: Andrey Smirnov <[email protected]> Cc: Archit Taneja <[email protected]> Cc: Andrzej Hajda <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Tomi Valkeinen <[email protected]> Cc: Andrey Gusakov <[email protected]> Cc: Philipp Zabel <[email protected]> Cc: Cory Tusar <[email protected]> Cc: Chris Healy <[email protected]> Cc: Lucas Stach <[email protected]> Cc: [email protected] Cc: [email protected] --- drivers/gpu/drm/bridge/tc358767.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 5e1e73a91696..115cffc55a96 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -748,22 +748,19 @@ static int tc_set_video_mode(struct tc_data *tc, static int tc_wait_link_training(struct tc_data *tc) { - u32 timeout = 1000; u32 value; int ret; - do { - udelay(1); - tc_read(DP0_LTSTAT, &value); - } while ((!(value & LT_LOOPDONE)) && (--timeout)); - - if (timeout == 0) { + ret = tc_poll_timeout(tc, DP0_LTSTAT, LT_LOOPDONE, + LT_LOOPDONE, 1, 1000); + if (ret) { dev_err(tc->dev, "Link training timeout waiting for LT_LOOPDONE!\n"); - return -ETIMEDOUT; + return ret; } - return (value >> 8) & 0x7; + tc_read(DP0_LTSTAT, &value); + return (value >> 8) & 0x7; err: return ret; } -- 2.21.0
