sdcard disabling irq 19

kernel 4.8.9_64
slackware 14.1
SD Host controller: O2 Micro, Inc. Device 8520 (rev 01)

I insert an SD card and get this:
Quote:

Message from syslogd@dark dark kernel: [13553.864719] Disabling IRQ #19

fdisk -l does not see /dev/sdc
The machine slows down, has to be rebooted to function properly again.

Does anyone know how to overcome the objection to SD cards ?

Quote:

# MMC/SD/SDIO Card Drivers # CONFIG_MMC_BLOCK=m CONFIG_MMC_BLOCK_MINORS=8 CONFIG_MMC_BLOCK_BOUNCE=y CONFIG_SDIO_UART=m CONFIG_MMC_TEST=m # # MMC/SD/SDIO Host Controller Drivers # CONFIG_MMC_SDHCI=m CONFIG_MMC_SDHCI_PCI=m # CONFIG_MMC_RICOH_MMC is not set CONFIG_MMC_SDHCI_ACPI=m CONFIG_MMC_SDHCI_PLTFM=m # CONFIG_MMC_WBSD is not set # CONFIG_MMC_TIFM_SD is not set # CONFIG_MMC_SDRICOH_CS is not set # CONFIG_MMC_CB710 is not set # CONFIG_MMC_VIA_SDMMC is not set # CONFIG_MMC_VUB300 is not set # CONFIG_MMC_USHC is not set # CONFIG_MMC_USDHI6ROL0 is not set # CONFIG_MMC_TOSHIBA_PCI is not set # CONFIG_MMC_MTK is not set # CONFIG_MEMSTICK is not set CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=m # CONFIG_LEDS_CLASS_FLASH is not set