Hi All,
While trying to test suspend/resume of sdio(wifi) module of my imx6 sabresd board, I encountered the following problem where the sdio module fails to go to suspend mode.
Log:
Freezing user space processes ... (elapsed 0.01 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
wl1271_sdio mmc2:0001:2: can't keep power while host is suspended
pm_op(): platform_pm_suspend+0x0/0x5c returns -22
PM: Device sdhci-esdhc-imx.2 failed to suspend: error -22
PM: Some devices failed to suspend
While debugging this problem, I came across a flag MMC_PM_KEEP_POWER which needs to be set for sdio module to suspend. I took reference from the link iMX28 SDIO suspend fails on a 802.11n module but didn succeed. Where do I need to set this flag?
I am using freescale BSP kk4.4.2_1.0.0-ga with linux kernel version 3.0.35.
