diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c
index 067dd462736280d4c49d67c5c7d7d3c123e126be..571915dfb218382f0d29ea72136b05669b9271ea 100644
--- a/drivers/mmc/host/rtsx_pci_sdmmc.c
+++ b/drivers/mmc/host/rtsx_pci_sdmmc.c
@@ -21,6 +21,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/highmem.h>
 #include <linux/delay.h>
 #include <linux/platform_device.h>