diff --git a/block/dmg-lzfse.c b/block/dmg-lzfse.c
index 19d25bc6466a7987a4d3ebf06f14480cd10a9a82..6798cf4fbfffe2b05b17d1e452edd3e434a87df5 100644
--- a/block/dmg-lzfse.c
+++ b/block/dmg-lzfse.c
@@ -22,7 +22,6 @@
  * THE SOFTWARE.
  */
 #include "qemu/osdep.h"
-#include "qemu-common.h"
 #include "dmg.h"
 #include <lzfse.h>
 
diff --git a/block/vvfat.c b/block/vvfat.c
index f6c28805dda4a78e687a28c3a914d09cd4dfa8e4..5dc8d6eb4c1b94369fc104c368e61cf7eaa2fea3 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -1453,7 +1453,7 @@ static void print_direntry(const direntry_t* direntry)
         for(i=0;i<11;i++)
             ADD_CHAR(direntry->name[i]);
         buffer[j] = 0;
-        fprintf(stderr,"%s attributes=0x%02x begin=%d size=%d\n",
+        fprintf(stderr, "%s attributes=0x%02x begin=%u size=%u\n",
                 buffer,
                 direntry->attributes,
                 begin_of_direntry(direntry),le32_to_cpu(direntry->size));
@@ -1462,7 +1462,7 @@ static void print_direntry(const direntry_t* direntry)
 
 static void print_mapping(const mapping_t* mapping)
 {
-    fprintf(stderr, "mapping (%p): begin, end = %d, %d, dir_index = %d, "
+    fprintf(stderr, "mapping (%p): begin, end = %u, %u, dir_index = %u, "
         "first_mapping_index = %d, name = %s, mode = 0x%x, " ,
         mapping, mapping->begin, mapping->end, mapping->dir_index,
         mapping->first_mapping_index, mapping->path, mapping->mode);
@@ -1470,7 +1470,7 @@ static void print_mapping(const mapping_t* mapping)
     if (mapping->mode & MODE_DIRECTORY)
         fprintf(stderr, "parent_mapping_index = %d, first_dir_index = %d\n", mapping->info.dir.parent_mapping_index, mapping->info.dir.first_dir_index);
     else
-        fprintf(stderr, "offset = %d\n", mapping->info.file.offset);
+        fprintf(stderr, "offset = %u\n", mapping->info.file.offset);
 }
 #endif
 
@@ -1604,7 +1604,7 @@ typedef struct commit_t {
 static void clear_commits(BDRVVVFATState* s)
 {
     int i;
-DLOG(fprintf(stderr, "clear_commits (%d commits)\n", s->commits.next));
+DLOG(fprintf(stderr, "clear_commits (%u commits)\n", s->commits.next));
     for (i = 0; i < s->commits.next; i++) {
         commit_t* commit = array_get(&(s->commits), i);
         assert(commit->path || commit->action == ACTION_WRITEOUT);
@@ -2660,7 +2660,9 @@ static int handle_renames_and_mkdirs(BDRVVVFATState* s)
     fprintf(stderr, "handle_renames\n");
     for (i = 0; i < s->commits.next; i++) {
         commit_t* commit = array_get(&(s->commits), i);
-        fprintf(stderr, "%d, %s (%d, %d)\n", i, commit->path ? commit->path : "(null)", commit->param.rename.cluster, commit->action);
+        fprintf(stderr, "%d, %s (%u, %d)\n", i,
+                commit->path ? commit->path : "(null)",
+                commit->param.rename.cluster, commit->action);
     }
 #endif
 
diff --git a/contrib/elf2dmp/main.c b/contrib/elf2dmp/main.c
index 9a2dbc290214bc56fa02b077f3afdaed8216fc54..ac746e49e097c2e11f5a9c1eb715ed91d00deb8f 100644
--- a/contrib/elf2dmp/main.c
+++ b/contrib/elf2dmp/main.c
@@ -568,12 +568,12 @@ int main(int argc, char *argv[])
     if (fill_header(&header, &ps, &vs, KdDebuggerDataBlock, kdbg,
             KdVersionBlock, qemu_elf.state_nr)) {
         err = 1;
-        goto out_pdb;
+        goto out_kdbg;
     }
 
     if (fill_context(kdbg, &vs, &qemu_elf)) {
         err = 1;
-        goto out_pdb;
+        goto out_kdbg;
     }
 
     if (write_dump(&ps, &header, argv[2])) {
diff --git a/hw/display/exynos4210_fimd.c b/hw/display/exynos4210_fimd.c
index 61f7408b1c70c2c84eb7f24fb2f39fffdfa02bcf..85b0ebf23ae9f39d68eca1ce3e6c138d277422f6 100644
--- a/hw/display/exynos4210_fimd.c
+++ b/hw/display/exynos4210_fimd.c
@@ -1271,12 +1271,14 @@ static void exynos4210_fimd_update(void *opaque)
     bool blend = false;
     uint8_t *host_fb_addr;
     bool is_dirty = false;
-    const int global_width = (s->vidtcon[2] & FIMD_VIDTCON2_SIZE_MASK) + 1;
+    int global_width;
 
     if (!s || !s->console || !s->enabled ||
         surface_bits_per_pixel(qemu_console_surface(s->console)) == 0) {
         return;
     }
+
+    global_width = (s->vidtcon[2] & FIMD_VIDTCON2_SIZE_MASK) + 1;
     exynos4210_update_resolution(s);
     surface = qemu_console_surface(s->console);
 
diff --git a/hw/display/omap_lcdc.c b/hw/display/omap_lcdc.c
index 07a5effe043c81de3787c72ca5560620d44e4148..13ab73ec61c40cc37564f556dd4a78a46afaf50d 100644
--- a/hw/display/omap_lcdc.c
+++ b/hw/display/omap_lcdc.c
@@ -77,14 +77,18 @@ static void omap_lcd_interrupts(struct omap_lcd_panel_s *s)
 static void omap_update_display(void *opaque)
 {
     struct omap_lcd_panel_s *omap_lcd = (struct omap_lcd_panel_s *) opaque;
-    DisplaySurface *surface = qemu_console_surface(omap_lcd->con);
+    DisplaySurface *surface;
     draw_line_func draw_line;
     int size, height, first, last;
     int width, linesize, step, bpp, frame_offset;
     hwaddr frame_base;
 
-    if (!omap_lcd || omap_lcd->plm == 1 || !omap_lcd->enable ||
-        !surface_bits_per_pixel(surface)) {
+    if (!omap_lcd || omap_lcd->plm == 1 || !omap_lcd->enable) {
+        return;
+    }
+
+    surface = qemu_console_surface(omap_lcd->con);
+    if (!surface_bits_per_pixel(surface)) {
         return;
     }
 
diff --git a/hw/ssi/imx_spi.c b/hw/ssi/imx_spi.c
index 5cec9b5d05d7c78d6ed853a5deb8f5a9cfb1c97b..0b3052bdf9ef0bdfcbab8abfcd8d5e81335404f8 100644
--- a/hw/ssi/imx_spi.c
+++ b/hw/ssi/imx_spi.c
@@ -52,7 +52,7 @@ static const char *imx_spi_reg_name(uint32_t reg)
     case ECSPI_MSGDATA:
         return  "ECSPI_MSGDATA";
     default:
-        sprintf(unknown, "%d ?", reg);
+        sprintf(unknown, "%u ?", reg);
         return unknown;
     }
 }
diff --git a/hw/ssi/xilinx_spi.c b/hw/ssi/xilinx_spi.c
index 1379cb164bd393761a0daea8ea29c06ba45eab28..d2b69d027ad9459744ff9120650b0f86e1bbea97 100644
--- a/hw/ssi/xilinx_spi.c
+++ b/hw/ssi/xilinx_spi.c
@@ -139,7 +139,7 @@ static void xlx_spi_update_irq(XilinxSPI *s)
        irq chain unless things really changed.  */
     if (pending != s->irqline) {
         s->irqline = pending;
-        DB_PRINT("irq_change of state %d ISR:%x IER:%X\n",
+        DB_PRINT("irq_change of state %u ISR:%x IER:%X\n",
                     pending, s->regs[R_IPISR], s->regs[R_IPIER]);
         qemu_set_irq(s->irq, pending);
     }
diff --git a/io/channel-websock.c b/io/channel-websock.c
index fc36d44ebae7c7b6920d357cf979b3df60806bce..d48a929e49c77e551e90d006f82d118856bb1984 100644
--- a/io/channel-websock.c
+++ b/io/channel-websock.c
@@ -734,7 +734,7 @@ static int qio_channel_websock_decode_header(QIOChannelWebsock *ioc,
             opcode != QIO_CHANNEL_WEBSOCK_OPCODE_CLOSE &&
             opcode != QIO_CHANNEL_WEBSOCK_OPCODE_PING &&
             opcode != QIO_CHANNEL_WEBSOCK_OPCODE_PONG) {
-            error_setg(errp, "unsupported opcode: %#04x; only binary, close, "
+            error_setg(errp, "unsupported opcode: 0x%04x; only binary, close, "
                        "ping, and pong websocket frames are supported", opcode);
             qio_channel_websock_write_close(
                 ioc, QIO_CHANNEL_WEBSOCK_STATUS_INVALID_DATA ,
diff --git a/net/l2tpv3.c b/net/l2tpv3.c
index 55fea17c0f0dfd6fe308efe730fedd711e72fd09..e4d4218db6984ce9aa940100582ca7971180336f 100644
--- a/net/l2tpv3.c
+++ b/net/l2tpv3.c
@@ -655,9 +655,8 @@ int net_init_l2tpv3(const Netdev *netdev,
         error_setg(errp, "could not bind socket err=%i", errno);
         goto outerr;
     }
-    if (result) {
-        freeaddrinfo(result);
-    }
+
+    freeaddrinfo(result);
 
     memset(&hints, 0, sizeof(hints));
 
@@ -686,9 +685,7 @@ int net_init_l2tpv3(const Netdev *netdev,
     memcpy(s->dgram_dst, result->ai_addr, result->ai_addrlen);
     s->dst_size = result->ai_addrlen;
 
-    if (result) {
-        freeaddrinfo(result);
-    }
+    freeaddrinfo(result);
 
     if (l2tpv3->has_counter && l2tpv3->counter) {
         s->has_counter = true;