Replace explicit polling loop with equivalent call to
tc_poll_timeout() for brevity. No functional change intended.

Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
Reviewed-by: Andrzej Hajda <a.ha...@samsung.com>
Cc: Andrzej Hajda <a.ha...@samsung.com>
Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkei...@ti.com>
Cc: Andrey Gusakov <andrey.gusa...@cogentembedded.com>
Cc: Philipp Zabel <p.za...@pengutronix.de>
Cc: Cory Tusar <cory.tu...@zii.aero>
Cc: Chris Healy <cphe...@gmail.com>
Cc: Lucas Stach <l.st...@pengutronix.de>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-ker...@vger.kernel.org
---
 drivers/gpu/drm/bridge/tc358767.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/bridge/tc358767.c 
b/drivers/gpu/drm/bridge/tc358767.c
index fb8a1942ec54..f463ef6d4271 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -774,7 +774,6 @@ static int tc_main_link_enable(struct tc_data *tc)
        struct device *dev = tc->dev;
        unsigned int rate;
        u32 dp_phy_ctrl;
-       int timeout;
        u32 value;
        int ret;
        u8 tmp[8];
@@ -831,15 +830,10 @@ static int tc_main_link_enable(struct tc_data *tc)
        dp_phy_ctrl &= ~(DP_PHY_RST | PHY_M1_RST | PHY_M0_RST);
        tc_write(DP_PHY_CTRL, dp_phy_ctrl);
 
-       timeout = 1000;
-       do {
-               tc_read(DP_PHY_CTRL, &value);
-               udelay(1);
-       } while ((!(value & PHY_RDY)) && (--timeout));
-
-       if (timeout == 0) {
+       ret = tc_poll_timeout(tc, DP_PHY_CTRL, PHY_RDY, PHY_RDY, 1, 1000);
+       if (ret) {
                dev_err(dev, "timeout waiting for phy become ready");
-               return -ETIMEDOUT;
+               return ret;
        }
 
        /* Set misc: 8 bits per color */
-- 
2.21.0

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