diff --git a/exec.c b/exec.c
index a4785b25f8..8529390cb2 100644
--- a/exec.c
+++ b/exec.c
@@ -2061,7 +2061,7 @@ void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
     /* we modify the TLB cache so that the dirty bit will be set again
        when accessing the range */
     start1 = (unsigned long)qemu_safe_ram_ptr(start);
-    /* Chek that we don't span multiple blocks - this breaks the
+    /* Check that we don't span multiple blocks - this breaks the
        address comparisons below.  */
     if ((unsigned long)qemu_safe_ram_ptr(end - 1) - start1
             != (end - 1) - start) {
diff --git a/hw/piix_pci.c b/hw/piix_pci.c
index 7f1c4cca31..85a320e729 100644
--- a/hw/piix_pci.c
+++ b/hw/piix_pci.c
@@ -312,7 +312,7 @@ static void piix3_set_irq_pic(PIIX3State *piix3, int pic_irq)
 {
     qemu_set_irq(piix3->pic[pic_irq],
                  !!(piix3->pic_levels &
-                    (((1UL << PIIX_NUM_PIRQS) - 1) <<
+                    (((1ULL << PIIX_NUM_PIRQS) - 1) <<
                      (pic_irq * PIIX_NUM_PIRQS))));
 }
 
diff --git a/hw/realview.c b/hw/realview.c
index 96fb9da241..82f3d82d44 100644
--- a/hw/realview.c
+++ b/hw/realview.c
@@ -17,7 +17,6 @@
 #include "sysemu.h"
 #include "boards.h"
 #include "bitbang_i2c.h"
-#include "sysbus.h"
 #include "blockdev.h"
 
 #define SMP_BOOT_ADDR 0xe0000000
diff --git a/hw/sd.c b/hw/sd.c
index f44a97092b..cedfb20249 100644
--- a/hw/sd.c
+++ b/hw/sd.c
@@ -1104,6 +1104,17 @@ static sd_rsp_type_t sd_normal_command(SDState *sd,
         }
         break;
 
+    case 52:
+    case 53:
+        /* CMD52, CMD53: reserved for SDIO cards
+         * (see the SDIO Simplified Specification V2.0)
+         * Handle as illegal command but do not complain
+         * on stderr, as some OSes may use these in their
+         * probing for presence of an SDIO card.
+         */
+        sd->card_status |= ILLEGAL_COMMAND;
+        return sd_r0;
+
     /* Application specific commands (Class 8) */
     case 55:	/* CMD55:  APP_CMD */
         if (sd->rca != rca)
diff --git a/target-ppc/STATUS b/target-ppc/STATUS
index 32e7ffa493..c8e9018bfc 100644
--- a/target-ppc/STATUS
+++ b/target-ppc/STATUS
@@ -11,7 +11,7 @@ INSN: instruction set.
 SPR:  special purpose registers set
       OK => all SPR registered (but some may be fake)
       KO => some SPR are missing or should be removed
-      ?  => uncheked
+      ?  => unchecked
 MSR:  MSR bits definitions
       OK => all MSR bits properly defined
       KO => MSR definition is incorrect