Hi Shengjiu, On Fri, Jun 18, 2021 at 7:10 AM Shengjiu Wang <shengjiu.wang@xxxxxxx> wrote: > > There is an unhandled interrupt after suspend, which cause endless > interrupt when system resume, so system may hang. > > Disable all interrupts in runtime suspend callback to avoid above > issue. Fixe tag? > + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0, > + FSL_XCVR_IRQ_EARC_ALL, 0); > + if (ret < 0) > + dev_err(dev, "Failed to clear IER0: %d\n", ret); > + The operations in _suspend() are usually balanced with the ones in _resume(). Shouldn't you enable the interrupts in resume() then? I see that the interrupts are currently enabled inside fsl_xcvr_prepare().
