diff options
| -rw-r--r-- | drivers/rtc/rtc-zynqmp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-zynqmp.c b/drivers/rtc/rtc-zynqmp.c index 856bc1678e7d..caacce3725e2 100644 --- a/drivers/rtc/rtc-zynqmp.c +++ b/drivers/rtc/rtc-zynqmp.c @@ -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)); |