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rtc: renesas-rtca3: Check RADJ poll result during initial setup

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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
Link: https://patch.msgid.link/20260602192559.1791344-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Lad Prabhakar 2026-06-02 20:25:56 +01:00 committed by Alexandre Belloni
parent 7e342d87aa
commit fafb016d08
1 changed files with 2 additions and 0 deletions
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2
drivers/rtc/rtc-renesas-rtca3.c
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@ -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;