Commit 83b9e5eb authored by Tomas Melin's avatar Tomas Melin Committed by Alexandre Belloni
Browse files

rtc: zynqmp: check calibration max value 



Enable check to not overflow the calibration
max value.

Reviewed-by: default avatarHarini T <harini.t@amd.com>
Tested-by: default avatarHarini T <harini.t@amd.com>
Signed-off-by: default avatarTomas Melin <tomas.melin@vaisala.com>
Acked-by: default avatarMichal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260122-zynqmp-rtc-updates-v4-2-d4edb966b499@vaisala.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent 2724fb4d

drivers/rtc/rtc-zynqmp.c

+5 −0
Original line number Diff line number Diff line
@@ -349,6 +349,11 @@ static int xlnx_rtc_probe(struct platform_device *pdev) 
		xrtcdev->freq--;

	}



	if (xrtcdev->freq > RTC_TICK_MASK) {

		dev_err(&pdev->dev, "Invalid RTC calibration value\n");

		return -EINVAL;

	}



	ret = readl(xrtcdev->reg_base + RTC_CALIB_RD);

	if (!ret)

		writel(xrtcdev->freq, (xrtcdev->reg_base + RTC_CALIB_WR));