Hi James, > > To understand what is happening here could you apply attached debug > > patch to generate logs, or enable dynamic_debug for that? > > Here's a dynamic_debug log. > > Note the point of failure is the "mmc0: Timeout waiting for hardware > interrupt." message, which occurs in the driver SDIO interrupt > function, which began execution in a critical time period after driver > suspend but before platform suspend. > > We use a GPIO to wake from WLAN. This doesn't match the gpio parameter configured in hscfg command 0xe5. > > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.090061] Freezing remaining freezable tasks ... (elapsed > 0.01 seconds) done. > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.113049] Suspending console(s) (use no_console_suspend to > debug) [...] > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.304049] mwifiex_sdio: cmd: mmc0:0001:1: suspend: PM flag = > 0x3 > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.304049] mwifiex_sdio mmc0:0001:1: cmd: HS_CFG_CMD: > condition:0xa gpio:0xff gap:0xff gpio:0xff --> This configures firmware to use SDIO interface to wake up host. Could you change the gpio parameter to the actual GPIO pin number (from 8787 point of view)? > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.304072] mwifiex_sdio mmc0:0001:1: cmd: QUEUE_CMD: cmd=0xe5, > cmd_pending=1 > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.304083] mwifiex_sdio mmc0:0001:1: cmd: DNLD_CMD: > (1401090251.944017): 0xe5, act 0x1, len 16, seqno 0x5f [...] > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.304886] mwifiex_sdio mmc0:0001:1: event: hs_activated > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.304903] mwifiex_sdio mmc0:0001:1: cmd: FREE_CMD: cmd=0xe5, > cmd_pending=0 > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.304907] mwifiex_sdio: cmd: suspend with > MMC_PM_KEEP_POWER|MMC_PM_WAKE_SDIO_IRQ > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.307736] mmc0: keeping power over suspend > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.307736] sdhci_wakeup_irq > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.307749] sdhci_wakeup_irq > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.307749] sdhci_wakeup_irq > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.307751] sdhci_wakeup_irq > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.307753] [galcore] enter gpu_suspend > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.307793] [galcore] exit gpu_suspend, return 0 > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.307859] PM: suspend of devices complete after 194.744 > msecs > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.320018] olpc_ec_1_75_suspend: suspend sync 0000001f > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.340038] PM: late suspend of devices complete after 32.172 > msecs > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.340307] PM: noirq suspend of devices complete after 0.263 > msecs > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.340417] mmp3_pm_enter_d2 > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.340417] before suspend > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.340430] after resume > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.372814] PM: noirq resume of devices complete after 0.098 > msecs > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.391862] PM: early resume of devices complete after 18.934 > msecs > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.391873] [galcore] enter gpu_resume > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.396056] [galcore] exit gpu_resume, return 0 > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.396056] sdhci_wakeup_irq > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.396070] sdhci_wakeup_irq > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.396072] sdhci_wakeup_irq > May 26 07:44:33 xo-96-6d-f4 kernel: [ 188.396074] sdhci_wakeup_irq > May 26 07:44:33 xo-96-6d-f4 kernel: [ 198.341764] mmc0: Timeout waiting for hardware interrupt. > May 26 07:44:33 xo-96-6d-f4 kernel: [ 198.341784] mwifiex_sdio mmc0:0001:1: read mp_regs failed I was expecting that mwifiex_sdio_resume handler is called before the SDIO interrupt function is called. > May 26 07:44:33 xo-96-6d-f4 kernel: [ 198.341909] mwifiex_sdio mmc0:0001:1: cmd: HS_CFG_CMD: > condition:0xffffffff gpio:0xff gap:0xff > May 26 07:44:33 xo-96-6d-f4 kernel: [ 198.341909] mwifiex_sdio mmc0:0001:1: cmd: QUEUE_CMD: cmd=0xe5, > cmd_pending=1 > May 26 07:44:33 xo-96-6d-f4 kernel: [ 198.341947] mwifiex_sdio mmc0:0001:1: cmd: DNLD_CMD: > (1401090261.950120): 0xe5, act 0x1, len 16, seqno 0x61 Thanks, Bing -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
