Delete write only variables

Compiling with GCC 4.6.0 20100925 produced warnings like:
/src/qemu/net/tap-win32.c: In function 'tap_win32_open':
/src/qemu/net/tap-win32.c:582:12: error: variable 'hThread' set but not used [-Werror=unused-but-set-variable]

Fix by removing the unused variables.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

hw/mips_fulong2e.c

@@ -265,13 +265,11 @@ static void mips_fulong2e_init(ram_addr_t ram_size, const char *boot_device,
     qemu_irq *cpu_exit_irq;
     int via_devfn;
     PCIBus *pci_bus;
-    ISADevice *isa_dev;
     uint8_t *eeprom_buf;
     i2c_bus *smbus;
     int i;
     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
     DeviceState *eeprom;
-    ISADevice *rtc_state;
     CPUState *env;
 
     /* init CPUs */
@@ -378,9 +376,9 @@ static void mips_fulong2e_init(ram_addr_t ram_size, const char *boot_device,
     DMA_init(0, cpu_exit_irq);
 
     /* Super I/O */
-    isa_dev = isa_create_simple("i8042");
+    isa_create_simple("i8042");
 
-    rtc_state = rtc_init(2000, NULL);
+    rtc_init(2000, NULL);
 
     for(i = 0; i < MAX_SERIAL_PORTS; i++) {
         if (serial_hds[i]) {

hw/mips_malta.c

@@ -784,11 +784,7 @@ void mips_malta_init (ram_addr_t ram_size,
     target_long bios_size;
     int64_t kernel_entry;
     PCIBus *pci_bus;
-    ISADevice *isa_dev;
     CPUState *env;
-    ISADevice *rtc_state;
-    FDCtrl *floppy_controller;
-    MaltaFPGAState *malta_fpga;
     qemu_irq *i8259;
     qemu_irq *cpu_exit_irq;
     int piix4_devfn;
@@ -851,7 +847,7 @@ void mips_malta_init (ram_addr_t ram_size,
     be = 0;
 #endif
     /* FPGA */
-    malta_fpga = malta_fpga_init(0x1f000000LL, env->irq[2], serial_hds[2]);
+    malta_fpga_init(0x1f000000LL, env->irq[2], serial_hds[2]);
 
     /* Load firmware in flash / BIOS unless we boot directly into a kernel. */
     if (kernel_filename) {
@@ -957,9 +953,9 @@ void mips_malta_init (ram_addr_t ram_size,
     DMA_init(0, cpu_exit_irq);
 
     /* Super I/O */
-    isa_dev = isa_create_simple("i8042");
+    isa_create_simple("i8042");
 
-    rtc_state = rtc_init(2000, NULL);
+    rtc_init(2000, NULL);
     serial_isa_init(0, serial_hds[0]);
     serial_isa_init(1, serial_hds[1]);
     if (parallel_hds[0])
@@ -967,7 +963,7 @@ void mips_malta_init (ram_addr_t ram_size,
     for(i = 0; i < MAX_FD; i++) {
         fd[i] = drive_get(IF_FLOPPY, 0, i);
     }
-    floppy_controller = fdctrl_init_isa(fd);
+    fdctrl_init_isa(fd);
 
     /* Sound card */
     audio_init(pci_bus);

hw/mips_r4k.c

@@ -167,7 +167,6 @@ void mips_r4k_init (ram_addr_t ram_size,
     int bios_size;
     CPUState *env;
     ResetData *reset_info;
-    ISADevice *rtc_state;
     int i;
     qemu_irq *i8259;
     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
@@ -268,7 +267,7 @@ void mips_r4k_init (ram_addr_t ram_size,
     isa_bus_new(NULL);
     isa_bus_irqs(i8259);
 
-    rtc_state = rtc_init(2000, NULL);
+    rtc_init(2000, NULL);
 
     /* Register 64 KB of ISA IO space at 0x14000000 */
 #ifdef TARGET_WORDS_BIGENDIAN

hw/ppc405_boards.c

@@ -501,7 +501,6 @@ static void taihu_405ep_init(ram_addr_t ram_size,
                              const char *cpu_model)
 {
     char *filename;
-    CPUPPCState *env;
     qemu_irq *pic;
     ram_addr_t bios_offset;
     target_phys_addr_t ram_bases[2], ram_sizes[2];
@@ -521,7 +520,7 @@ static void taihu_405ep_init(ram_addr_t ram_size,
 #ifdef DEBUG_BOARD_INIT
     printf("%s: register cpu\n", __func__);
 #endif
-    env = ppc405ep_init(ram_bases, ram_sizes, 33333333, &pic,
+    ppc405ep_init(ram_bases, ram_sizes, 33333333, &pic,
                   kernel_filename == NULL ? 0 : 1);
     /* allocate and load BIOS */
 #ifdef DEBUG_BOARD_INIT

hw/ppc405_uc.c

@@ -630,18 +630,11 @@ struct ppc405_dma_t {
 
 static uint32_t dcr_read_dma (void *opaque, int dcrn)
 {
-    ppc405_dma_t *dma;
-
-    dma = opaque;
-
     return 0;
 }
 
 static void dcr_write_dma (void *opaque, int dcrn, uint32_t val)
 {
-    ppc405_dma_t *dma;
-
-    dma = opaque;
 }
 
 static void ppc405_dma_reset (void *opaque)
@@ -739,9 +732,6 @@ struct ppc405_gpio_t {
 
 static uint32_t ppc405_gpio_readb (void *opaque, target_phys_addr_t addr)
 {
-    ppc405_gpio_t *gpio;
-
-    gpio = opaque;
 #ifdef DEBUG_GPIO
     printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
 #endif
@@ -752,9 +742,6 @@ static uint32_t ppc405_gpio_readb (void *opaque, target_phys_addr_t addr)
 static void ppc405_gpio_writeb (void *opaque,
                                 target_phys_addr_t addr, uint32_t value)
 {
-    ppc405_gpio_t *gpio;
-
-    gpio = opaque;
 #ifdef DEBUG_GPIO
     printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr,
            value);
@@ -763,9 +750,6 @@ static void ppc405_gpio_writeb (void *opaque,
 
 static uint32_t ppc405_gpio_readw (void *opaque, target_phys_addr_t addr)
 {
-    ppc405_gpio_t *gpio;
-
-    gpio = opaque;
 #ifdef DEBUG_GPIO
     printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
 #endif
@@ -776,9 +760,6 @@ static uint32_t ppc405_gpio_readw (void *opaque, target_phys_addr_t addr)
 static void ppc405_gpio_writew (void *opaque,
                                 target_phys_addr_t addr, uint32_t value)
 {
-    ppc405_gpio_t *gpio;
-
-    gpio = opaque;
 #ifdef DEBUG_GPIO
     printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr,
            value);
@@ -787,9 +768,6 @@ static void ppc405_gpio_writew (void *opaque,
 
 static uint32_t ppc405_gpio_readl (void *opaque, target_phys_addr_t addr)
 {
-    ppc405_gpio_t *gpio;
-
-    gpio = opaque;
 #ifdef DEBUG_GPIO
     printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
 #endif
@@ -800,9 +778,6 @@ static uint32_t ppc405_gpio_readl (void *opaque, target_phys_addr_t addr)
 static void ppc405_gpio_writel (void *opaque,
                                 target_phys_addr_t addr, uint32_t value)
 {
-    ppc405_gpio_t *gpio;
-
-    gpio = opaque;
 #ifdef DEBUG_GPIO
     printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr,
            value);
@@ -823,9 +798,6 @@ static CPUWriteMemoryFunc * const ppc405_gpio_write[] = {
 
 static void ppc405_gpio_reset (void *opaque)
 {
-    ppc405_gpio_t *gpio;
-
-    gpio = opaque;
 }
 
 static void ppc405_gpio_init(target_phys_addr_t base)

hw/ppc_newworld.c

@@ -128,7 +128,7 @@ static void ppc_core99_init (ram_addr_t ram_size,
                              const char *initrd_filename,
                              const char *cpu_model)
 {
-    CPUState *env = NULL, *envs[MAX_CPUS];
+    CPUState *env = NULL;
     char *filename;
     qemu_irq *pic, **openpic_irqs;
     int unin_memory;
@@ -166,7 +166,6 @@ static void ppc_core99_init (ram_addr_t ram_size,
         /* Set time-base frequency to 100 Mhz */
         cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
         qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
-        envs[i] = env;
     }
 
     /* allocate RAM */

hw/ppc_oldworld.c

@@ -66,7 +66,7 @@ static void ppc_heathrow_init (ram_addr_t ram_size,
                                const char *initrd_filename,
                                const char *cpu_model)
 {
-    CPUState *env = NULL, *envs[MAX_CPUS];
+    CPUState *env = NULL;
     char *filename;
     qemu_irq *pic, **heathrow_irqs;
     int linux_boot, i;
@@ -97,7 +97,6 @@ static void ppc_heathrow_init (ram_addr_t ram_size,
         /* Set time-base frequency to 16.6 Mhz */
         cpu_ppc_tb_init(env,  16600000UL);
         qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
-        envs[i] = env;
     }
 
     /* allocate RAM */

hw/ppc_prep.c

@@ -565,7 +565,7 @@ static void ppc_prep_init (ram_addr_t ram_size,
                            const char *initrd_filename,
                            const char *cpu_model)
 {
-    CPUState *env = NULL, *envs[MAX_CPUS];
+    CPUState *env = NULL;
     char *filename;
     nvram_t nvram;
     M48t59State *m48t59;
@@ -602,7 +602,6 @@ static void ppc_prep_init (ram_addr_t ram_size,
             cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
         }
         qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
-        envs[i] = env;
     }
 
     /* allocate RAM */

hw/ppce500_mpc8544ds.c

@@ -176,7 +176,6 @@ static void mpc8544ds_init(ram_addr_t ram_size,
     int i=0;
     unsigned int pci_irq_nrs[4] = {1, 2, 3, 4};
     qemu_irq *irqs, *mpic, *pci_irqs;
-    SerialState * serial[2];
 
     /* Setup CPU */
     env = cpu_ppc_init("e500v2_v30");
@@ -200,13 +199,13 @@ static void mpc8544ds_init(ram_addr_t ram_size,
 
     /* Serial */
     if (serial_hds[0]) {
-        serial[0] = serial_mm_init(MPC8544_SERIAL0_REGS_BASE,
+        serial_mm_init(MPC8544_SERIAL0_REGS_BASE,
                        0, mpic[12+26], 399193,
                        serial_hds[0], 1, 1);
     }
 
     if (serial_hds[1]) {
-        serial[0] = serial_mm_init(MPC8544_SERIAL1_REGS_BASE,
+        serial_mm_init(MPC8544_SERIAL1_REGS_BASE,
                        0, mpic[12+26], 399193,
                        serial_hds[0], 1, 1);
     }

hw/tc6393xb_template.h

@@ -38,12 +38,10 @@
 static void glue(tc6393xb_draw_graphic, BITS)(TC6393xbState *s)
 {
     int i;
-    int w_display;
     uint16_t *data_buffer;
     uint8_t *data_display;
 
     data_buffer = s->vram_ptr;
-    w_display = s->scr_width * BITS / 8;
     data_display = ds_get_data(s->ds);
     for(i = 0; i < s->scr_height; i++) {
 #if (BITS == 16)

hw/virtex_ml507.c

@@ -85,7 +85,6 @@ static CPUState *ppc440_init_xilinx(ram_addr_t *ram_size,
                                     uint32_t sysclk)
 {
     CPUState *env;
-    qemu_irq *pic;
     qemu_irq *irqs;
 
     env = cpu_init(cpu_model);
@@ -106,7 +105,7 @@ static CPUState *ppc440_init_xilinx(ram_addr_t *ram_size,
     irqs = qemu_mallocz(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
     irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
     irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
-    pic = ppcuic_init(env, irqs, 0x0C0, 0, 1);
+    ppcuic_init(env, irqs, 0x0C0, 0, 1);
     return env;
 }
 
@@ -236,13 +235,11 @@ static void virtex_init(ram_addr_t ram_size,
 
     if (kernel_filename) {
         uint64_t entry, low, high;
-        uint32_t base32;
         target_phys_addr_t boot_offset;
 
         /* Boots a kernel elf binary.  */
         kernel_size = load_elf(kernel_filename, NULL, NULL,
                                &entry, &low, &high, 1, ELF_MACHINE, 0);
-        base32 = entry;
         boot_info.bootstrap_pc = entry & 0x00ffffff;
 
         if (kernel_size < 0) {

hw/wm8750.c

@@ -171,7 +171,6 @@ static void wm8750_set_format(WM8750State *s)
     int i;
     struct audsettings in_fmt;
     struct audsettings out_fmt;
-    struct audsettings monoout_fmt;
 
     wm8750_out_flush(s);
 
@@ -212,10 +211,6 @@ static void wm8750_set_format(WM8750State *s)
     out_fmt.nchannels = 2;
     out_fmt.freq = s->dac_hz;
     out_fmt.fmt = AUD_FMT_S16;
-    monoout_fmt.endianness = 0;
-    monoout_fmt.nchannels = 1;
-    monoout_fmt.freq = s->rate->dac_hz;
-    monoout_fmt.fmt = AUD_FMT_S16;
 
     s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0],
                     CODEC ".speaker", s, wm8750_audio_out_cb, &out_fmt);

net/tap-win32.c

@@ -579,7 +579,6 @@ static int tap_win32_open(tap_win32_overlapped_t **phandle,
     } version;
     DWORD version_len;
     DWORD idThread;
-    HANDLE hThread;
 
     if (prefered_name != NULL)
         snprintf(name_buffer, sizeof(name_buffer), "%s", prefered_name);
@@ -623,7 +622,7 @@ static int tap_win32_open(tap_win32_overlapped_t **phandle,
 
     *phandle = &tap_overlapped;
 
-    hThread = CreateThread(NULL, 0, tap_win32_thread_entry,
+    CreateThread(NULL, 0, tap_win32_thread_entry,
                  (LPVOID)&tap_overlapped, 0, &idThread);
     return 0;
 }

savevm.c

@@ -1615,10 +1615,10 @@ static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
     while (qemu_peek_byte(f) == QEMU_VM_SUBSECTION) {
         char idstr[256];
         int ret;
-        uint8_t version_id, subsection, len;
+        uint8_t version_id, len;
         const VMStateDescription *sub_vmsd;
 
-        subsection = qemu_get_byte(f);
+        qemu_get_byte(f); /* subsection */
         len = qemu_get_byte(f);
         qemu_get_buffer(f, (uint8_t *)idstr, len);
         idstr[len] = 0;