diff --git a/arch/i386/kernel/head.S b/arch/i386/kernel/head.S
index 37b599f..58d2746 100644
--- a/arch/i386/kernel/head.S
+++ b/arch/i386/kernel/head.S
@@ -504,12 +504,12 @@
 	.quad 0x0000000000000000	/* 0x80 TSS descriptor */
 	.quad 0x0000000000000000	/* 0x88 LDT descriptor */
 
-	/* Segments used for calling PnP BIOS */
-	.quad 0x00c09a0000000000	/* 0x90 32-bit code */
-	.quad 0x00809a0000000000	/* 0x98 16-bit code */
-	.quad 0x0080920000000000	/* 0xa0 16-bit data */
-	.quad 0x0080920000000000	/* 0xa8 16-bit data */
-	.quad 0x0080920000000000	/* 0xb0 16-bit data */
+	/* Segments used for calling PnP BIOS have byte granularity */
+	.quad 0x00409a0000000000	/* 0x90 32-bit code */
+	.quad 0x00009a0000000000	/* 0x98 16-bit code */
+	.quad 0x0000920000000000	/* 0xa0 16-bit data */
+	.quad 0x0000920000000000	/* 0xa8 16-bit data */
+	.quad 0x0000920000000000	/* 0xb0 16-bit data */
 
 	/*
 	 * The APM segments have byte granularity and their bases
diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c
index 37bacfc..a721261 100644
--- a/drivers/pnp/pnpbios/bioscalls.c
+++ b/drivers/pnp/pnpbios/bioscalls.c
@@ -283,12 +283,15 @@
 static int __pnp_bios_get_dev_node(u8 *nodenum, char boot, struct pnp_bios_node *data)
 {
 	u16 status;
+	u16 tmp_nodenum;
 	if (!pnp_bios_present())
 		return PNP_FUNCTION_NOT_SUPPORTED;
 	if ( !boot && pnpbios_dont_use_current_config )
 		return PNP_FUNCTION_NOT_SUPPORTED;
+	tmp_nodenum = *nodenum;
 	status = call_pnp_bios(PNP_GET_SYS_DEV_NODE, 0, PNP_TS1, 0, PNP_TS2, boot ? 2 : 1, PNP_DS, 0,
-			       nodenum, sizeof(char), data, 65536);
+			       &tmp_nodenum, sizeof(tmp_nodenum), data, 65536);
+	*nodenum = tmp_nodenum;
 	return status;
 }
 
diff --git a/include/asm-i386/system.h b/include/asm-i386/system.h
index 24cc0c8..9c0593b 100644
--- a/include/asm-i386/system.h
+++ b/include/asm-i386/system.h
@@ -54,7 +54,7 @@
         ); } while(0)
 
 #define set_base(ldt,base) _set_base( ((char *)&(ldt)) , (base) )
-#define set_limit(ldt,limit) _set_limit( ((char *)&(ldt)) , ((limit)-1)>>12 )
+#define set_limit(ldt,limit) _set_limit( ((char *)&(ldt)) , ((limit)-1) )
 
 /*
  * Load a segment. Fall back on loading the zero