*ERR => whilst initialising MMC card

21

NO, It doesn’t have any error

22

then maybe it is not supported as from the configmemu, it does not include the MDM7607 chipset for WP76 modules:

config MMC_MSM
	tristate "Qualcomm SDCC Controller Support"
	depends on MMC && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
	help
	  This provides support for the SD/MMC cell found in the
	  MSM and QSD SOCs from Qualcomm. The controller also has
	  support for SDIO devices.
23

So,it mean cannot install this driver to wp76,right?

24

maybe WP module not support this feature

25

in dmseg I got this:

[ 273.965153] mmc0: error -22 whilst initialising SD card
[ 275.034652] sdhci_msm 7864900.sdhci: no support for card’s volts
[ 275.034694] mmc0: error -22 whilst initialising SD card
[ 399.951621] mmc0: error -22 whilst initialising SDIO card
[ 399.962264] sdhci_msm 7864900.sdhci: no support for card’s volts
[ 399.962294] mmc0: error -22 whilst initialising MMC card

how to fix it?
what is error -22 mean?

26

why previously you can read the SD card?

27

there were different board.

28

then that is hardware issue