SD card not showing up under /dev

I'm trying to mount a 2gb Kingston SD card on a Lenovo ThinkPad t420s running Arch Gnu/Linux with kernel version 5.2.6. It has a removable SD card reader connected with an ExpressCard slot. I've previously found this reader to be fully functional, and the SD card worked fine in a camera. When I insert the SD card into the reader it is not visible when I run

or look under

/dev

with

. In the past when I've had this problem with the SD reader or my (currently functional) USB ports, a reboot fixed it. I would like to figure out a solution that does not require me to reboot my machine. Is it possible to re-detect hardware on the fly? Something with

perhaps? I ran

before and after inserting the card, and a

of the outputs yielded this:

> [55367.604387] mmc0: error -110 whilst initialising SD card
> [55367.604769] sdhci-pci 0000:05:00.0: Will use DMA mode even though HW doesn't fully claim to support it.
> [55367.867535] mmc0: new high speed SD card at address 0002