Re: [PATCH v2 4/5] rtc: tps6586x: Fix initial enable_irq/disable_irq balance
From: Jon Hunter <jonathanh@nvidia.com>
Date: 2025-10-30 09:07:25
Also in:
linux-rtc, linux-tegra, lkml
On 29/10/2025 10:39, Alexandre Belloni wrote:
On 29/10/2025 09:20:17+0000, Jon Hunter wrote:quoted
Hi Esben, On 16/05/2025 08:23, Esben Haabendal wrote:quoted
Interrupts are automatically enabled when requested, so we need to initialize irq_en accordingly to avoid causing an unbalanced enable warning. Signed-off-by: Esben Haabendal <redacted> --- drivers/rtc/rtc-tps6586x.c | 1 + 1 file changed, 1 insertion(+)diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c index 54c8429b16bfcc692b1f4d5404f0c42f720e93b4..76ecf7b798f0de22aa89a552a263b473ab3065ef 100644 --- a/drivers/rtc/rtc-tps6586x.c +++ b/drivers/rtc/rtc-tps6586x.c@@ -258,6 +258,7 @@ static int tps6586x_rtc_probe(struct platform_device *pdev) irq_set_status_flags(rtc->irq, IRQ_NOAUTOEN); + rtc->irq_en = true; ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL, tps6586x_rtc_irq, IRQF_ONESHOT,I have bisected a suspend regression on one of our Tegra20 boards (that uses this driver) and bisect is pointing to this commit. Reverting this commit fixes the problem. Looking at the above I see that the flag IRQ_NOAUTOEN is being set and so now with your change we never enable the interrupt. Hence, the wake-ups are now broken and suspend testing fails. So it would seem best to revert this. BTW, I looked at the change to the CPCAP driver and that driver actively disables the IRQ after requesting it and so I am wondering if that will also have alarm issues? I don't have a board with CPCAP to test.That's right, I guess you can send reverts.
You guessed right! I certainly can. I am happy to send a revert for this because I can clearly test and verify this. I am not sure if you and Esben want to review the rest of the series. Jon -- nvpublic