From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

In rtca3_initial_setup(), the driver clears the RTCA3_RADJ register and
waits for it to reach zero using readb_poll_timeout(). Check the return
value of readb_poll_timeout() and propagate the error if the poll fails.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 drivers/rtc/rtc-renesas-rtca3.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/rtc/rtc-renesas-rtca3.c b/drivers/rtc/rtc-renesas-rtca3.c
index 2dc080d0eb6c..af2a3878289e 100644
--- a/drivers/rtc/rtc-renesas-rtca3.c
+++ b/drivers/rtc/rtc-renesas-rtca3.c
@@ -634,6 +634,8 @@ static int rtca3_initial_setup(struct clk *clk, struct rtca3_priv *priv)
 	writeb(0, priv->base + RTCA3_RADJ);
 	ret = readb_poll_timeout(priv->base + RTCA3_RADJ, tmp, !tmp, 10,
 				 RTCA3_DEFAULT_TIMEOUT_US);
+	if (ret)
+		return ret;
 
 	/* Start the RTC and enable automatic time error adjustment. */
 	mask = RTCA3_RCR2_START | RTCA3_RCR2_AADJE;
-- 
2.54.0

On 5/6/26 19:49, Prabhakar wrote:
> From: Lad Prabhakar<prabhakar.mahadev-lad.rj@bp.renesas.com>
> 
> In rtca3_initial_setup(), the driver clears the RTCA3_RADJ register and
> waits for it to reach zero using readb_poll_timeout(). Check the return
> value of readb_poll_timeout() and propagate the error if the poll fails.
> 
> Signed-off-by: Lad Prabhakar<prabhakar.mahadev-lad.rj@bp.renesas.com>

Reviewed-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Tested-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> # on RZ/G3S