1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 8518fa2a6f89..afe0f6d9b9bc 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -20,7 +20,7 @@
 struct plat_serial8250_port {
         unsigned long   iobase;         /* io base address */
         void __iomem    *membase;       /* ioremap cookie or NULL */
-        unsigned long   mapbase;        /* resource base */
+        resource_size_t mapbase;        /* resource base */
         unsigned int    irq;            /* interrupt number */
         unsigned int    uartclk;        /* UART clock rate */
         unsigned char   regshift;       /* register shift */