I'm still seeing errors in the kernel logs

Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmc0: cannot verify signal voltage switch
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmc0: new ultra high speed SDR104 SDXC card at address 0007
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmcblk0: mmc0:0007 SD64G 58.2 GiB 
Feb 13 11:04:23 t440s.akl.redhat.com kernel:  mmcblk0: p1
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmc0: cannot verify signal voltage switch
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900
Feb 13 11:04:23 t440s.akl.redhat.com kernel: blk_update_request: I/O error, dev mmcblk0, sector 122142456
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900
Feb 13 11:04:23 t440s.akl.redhat.com kernel: blk_update_request: I/O error, dev mmcblk0, sector 122142456
Feb 13 11:04:23 t440s.akl.redhat.com kernel: Buffer I/O error on dev mmcblk0, logical block 15267807, async page read
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900
Feb 13 11:04:23 t440s.akl.redhat.com kernel: blk_update_request: I/O error, dev mmcblk0, sector 122142456
Feb 13 11:04:23 t440s.akl.redhat.com kernel: Buffer I/O error on dev mmcblk0, logical block 15267807, async page read
Feb 13 11:04:23 t440s.akl.redhat.com baloo_file.desktop[3012]: QObject::connect: invalid null parameter
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900
Feb 13 11:04:23 t440s.akl.redhat.com baloo_file.desktop[3012]: QObject::connect: invalid null parameter
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmc0: cannot verify signal voltage switch


Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900
Feb 13 11:04:23 t440s.akl.redhat.com kernel: blk_update_request: I/O error, dev mmcblk0, sector 2048
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900
Feb 13 11:04:23 t440s.akl.redhat.com kernel: blk_update_request: I/O error, dev mmcblk0, sector 2048
Feb 13 11:04:23 t440s.akl.redhat.com kernel: Buffer I/O error on dev mmcblk0p1, logical block 0, async page read
Feb 13 11:04:23 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900


Feb 13 11:04:24 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900
Feb 13 11:04:24 t440s.akl.redhat.com kernel: blk_update_request: I/O error, dev mmcblk0, sector 122140408
Feb 13 11:04:24 t440s.akl.redhat.com kernel: mmcblk0: unknown error -22 sending read/write command, card status 0x900
Feb 13 11:04:24 t440s.akl.redhat.com kernel: blk_update_request: I/O error, dev mmcblk0, sector 122140408
Feb 13 11:04:24 t440s.akl.redhat.com kernel: Buffer I/O error on dev mmcblk0p1, logical block 15267295, async page read


Can't detect a valid filesystem on partition 1 when using the SD Card slot.

Re-tested card in a USB-3 SD Card reader and the xfs partition is still present and working correctly.