On Tue, Aug 05, 2014 at 12:36:49AM +0800, Fu, Zhonghui wrote: > Hi, Arend > > I investigated this issue, and its root cause is still that sdio > controller can't receive interrupts from WiFi chip on sdio bus when > sdio controller is in runtime suspend status. I am running 3.16-rc5 > linux kernel on ASUS T100TA tablet, and using sdhci-acpi driver. That's the root cause. I fixed this with the Freescale i.MX SD driver which is now able to report pending SDIO interrupts while runtime PM suspended. Other host drivers probably need fixing too, or having runtime PM disabled on them - if you can't receive SDIO interrupts while runtime PM suspended, then entering runtime PM while you have a SDIO device attached is a bug. This is something for the MMC people to deal with rather than Arend. -- FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
