cleanup: Tweak and re-run return_directly.cocci

Tweak the semantic patch to drop redundant parenthesis around the
return expression.

Coccinelle drops a comment in hw/rdma/vmw/pvrdma_cmd.c; restored
manually.

Coccinelle messes up vmdk_co_create(), not sure why.  Change dropped,
will be done manually in the next commit.

Line breaks in target/avr/cpu.h and hw/rdma/vmw/pvrdma_cmd.c tidied up
manually.

Whitespace in tools/virtiofsd/fuse_lowlevel.c tidied up manually.

checkpatch.pl complains "return of an errno should typically be -ve"
two times for hw/9pfs/9p-synth.c.  Preexisting, the patch merely makes
it visible to checkpatch.pl.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221122134917.1217307-2-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

27 files changed, 70 insertions, 204 deletions

diff --git a/hw/9pfs/9p-synth.c b/hw/9pfs/9p-synth.c
index 1c5813e..38d787f 100644
--- a/hw/9pfs/9p-synth.c
+++ b/hw/9pfs/9p-synth.c
@@ -72,7 +72,6 @@ static V9fsSynthNode *v9fs_add_dir_node(V9fsSynthNode *parent, int mode,
 int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode,
                           const char *name, V9fsSynthNode **result)
 {
-    int ret;
     V9fsSynthNode *node, *tmp;
 
     if (!synth_fs) {
@@ -87,8 +86,7 @@ int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode,
     QEMU_LOCK_GUARD(&synth_mutex);
     QLIST_FOREACH(tmp, &parent->child, sibling) {
         if (!strcmp(tmp->name, name)) {
-            ret = EEXIST;
-            return ret;
+            return EEXIST;
         }
     }
     /* Add the name */
@@ -98,15 +96,13 @@ int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode,
     v9fs_add_dir_node(node, node->attr->mode, ".",
                       node->attr, node->attr->inode);
     *result = node;
-    ret = 0;
-    return ret;
+    return 0;
 }
 
 int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode,
                              const char *name, v9fs_synth_read read,
                              v9fs_synth_write write, void *arg)
 {
-    int ret;
     V9fsSynthNode *node, *tmp;
 
     if (!synth_fs) {
@@ -122,8 +118,7 @@ int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode,
     QEMU_LOCK_GUARD(&synth_mutex);
     QLIST_FOREACH(tmp, &parent->child, sibling) {
         if (!strcmp(tmp->name, name)) {
-            ret = EEXIST;
-            return ret;
+            return EEXIST;
         }
     }
     /* Add file type and remove write bits */
@@ -138,8 +133,7 @@ int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode,
     node->private      = arg;
     pstrcpy(node->name, sizeof(node->name), name);
     QLIST_INSERT_HEAD_RCU(&parent->child, node, sibling);
-    ret = 0;
-    return ret;
+    return 0;
 }
 
 static void synth_fill_statbuf(V9fsSynthNode *node, struct stat *stbuf)
diff --git a/hw/char/sifive_uart.c b/hw/char/sifive_uart.c
index 1c75f79..f2684e5 100644
--- a/hw/char/sifive_uart.c
+++ b/hw/char/sifive_uart.c
@@ -274,7 +274,6 @@ SiFiveUARTState *sifive_uart_create(MemoryRegion *address_space, hwaddr base,
 {
     DeviceState *dev;
     SysBusDevice *s;
-    SiFiveUARTState *r;
 
     dev = qdev_new("riscv.sifive.uart");
     s = SYS_BUS_DEVICE(dev);
@@ -284,6 +283,5 @@ SiFiveUARTState *sifive_uart_create(MemoryRegion *address_space, hwaddr base,
                                 sysbus_mmio_get_region(s, 0));
     sysbus_connect_irq(s, 0, irq);
 
-    r = SIFIVE_UART(dev);
-    return r;
+    return SIFIVE_UART(dev);
 }
diff --git a/hw/ppc/ppc4xx_sdram.c b/hw/ppc/ppc4xx_sdram.c
index 8d7137f..54bf9a2 100644
--- a/hw/ppc/ppc4xx_sdram.c
+++ b/hw/ppc/ppc4xx_sdram.c
@@ -520,13 +520,10 @@ static inline hwaddr sdram_ddr2_base(uint32_t bcr)
 
 static hwaddr sdram_ddr2_size(uint32_t bcr)
 {
-    hwaddr size;
     int sh;
 
     sh = 1024 - ((bcr >> 6) & 0x3ff);
-    size = 8 * MiB * sh;
-
-    return size;
+    return 8 * MiB * sh;
 }
 
 static uint32_t sdram_ddr2_dcr_read(void *opaque, int dcrn)
diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c
index f5b6c3d..1eca632 100644
--- a/hw/rdma/vmw/pvrdma_cmd.c
+++ b/hw/rdma/vmw/pvrdma_cmd.c
@@ -182,13 +182,10 @@ static int create_pd(PVRDMADev *dev, union pvrdma_cmd_req *req,
 {
     struct pvrdma_cmd_create_pd *cmd = &req->create_pd;
     struct pvrdma_cmd_create_pd_resp *resp = &rsp->create_pd_resp;
-    int rc;
 
     memset(resp, 0, sizeof(*resp));
-    rc = rdma_rm_alloc_pd(&dev->rdma_dev_res, &dev->backend_dev,
-                          &resp->pd_handle, cmd->ctx_handle);
-
-    return rc;
+    return rdma_rm_alloc_pd(&dev->rdma_dev_res, &dev->backend_dev,
+                            &resp->pd_handle, cmd->ctx_handle);
 }
 
 static int destroy_pd(PVRDMADev *dev, union pvrdma_cmd_req *req,
@@ -504,20 +501,17 @@ static int modify_qp(PVRDMADev *dev, union pvrdma_cmd_req *req,
                      union pvrdma_cmd_resp *rsp)
 {
     struct pvrdma_cmd_modify_qp *cmd = &req->modify_qp;
-    int rc;
 
     /* No need to verify sgid_index since it is u8 */
 
-    rc = rdma_rm_modify_qp(&dev->rdma_dev_res, &dev->backend_dev,
-                           cmd->qp_handle, cmd->attr_mask,
-                           cmd->attrs.ah_attr.grh.sgid_index,
-                           (union ibv_gid *)&cmd->attrs.ah_attr.grh.dgid,
-                           cmd->attrs.dest_qp_num,
-                           (enum ibv_qp_state)cmd->attrs.qp_state,
-                           cmd->attrs.qkey, cmd->attrs.rq_psn,
-                           cmd->attrs.sq_psn);
-
-    return rc;
+    return rdma_rm_modify_qp(&dev->rdma_dev_res, &dev->backend_dev,
+                             cmd->qp_handle, cmd->attr_mask,
+                             cmd->attrs.ah_attr.grh.sgid_index,
+                             (union ibv_gid *)&cmd->attrs.ah_attr.grh.dgid,
+                             cmd->attrs.dest_qp_num,
+                             (enum ibv_qp_state)cmd->attrs.qp_state,
+                             cmd->attrs.qkey, cmd->attrs.rq_psn,
+                             cmd->attrs.sq_psn);
 }
 
 static int query_qp(PVRDMADev *dev, union pvrdma_cmd_req *req,
@@ -526,15 +520,14 @@ static int query_qp(PVRDMADev *dev, union pvrdma_cmd_req *req,
     struct pvrdma_cmd_query_qp *cmd = &req->query_qp;
     struct pvrdma_cmd_query_qp_resp *resp = &rsp->query_qp_resp;
     struct ibv_qp_init_attr init_attr;
-    int rc;
 
     memset(resp, 0, sizeof(*resp));
 
-    rc = rdma_rm_query_qp(&dev->rdma_dev_res, &dev->backend_dev, cmd->qp_handle,
-                          (struct ibv_qp_attr *)&resp->attrs, cmd->attr_mask,
-                          &init_attr);
-
-    return rc;
+    return rdma_rm_query_qp(&dev->rdma_dev_res, &dev->backend_dev,
+                            cmd->qp_handle,
+                            (struct ibv_qp_attr *)&resp->attrs,
+                            cmd->attr_mask,
+                            &init_attr);
 }
 
 static int destroy_qp(PVRDMADev *dev, union pvrdma_cmd_req *req,
@@ -560,34 +553,27 @@ static int create_bind(PVRDMADev *dev, union pvrdma_cmd_req *req,
                        union pvrdma_cmd_resp *rsp)
 {
     struct pvrdma_cmd_create_bind *cmd = &req->create_bind;
-    int rc;
     union ibv_gid *gid = (union ibv_gid *)&cmd->new_gid;
 
     if (cmd->index >= MAX_PORT_GIDS) {
         return -EINVAL;
     }
 
-    rc = rdma_rm_add_gid(&dev->rdma_dev_res, &dev->backend_dev,
-                         dev->backend_eth_device_name, gid, cmd->index);
-
-    return rc;
+    return rdma_rm_add_gid(&dev->rdma_dev_res, &dev->backend_dev,
+                           dev->backend_eth_device_name, gid, cmd->index);
 }
 
 static int destroy_bind(PVRDMADev *dev, union pvrdma_cmd_req *req,
                         union pvrdma_cmd_resp *rsp)
 {
-    int rc;
-
     struct pvrdma_cmd_destroy_bind *cmd = &req->destroy_bind;
 
     if (cmd->index >= MAX_PORT_GIDS) {
         return -EINVAL;
     }
 
-    rc = rdma_rm_del_gid(&dev->rdma_dev_res, &dev->backend_dev,
-                        dev->backend_eth_device_name, cmd->index);
-
-    return rc;
+    return rdma_rm_del_gid(&dev->rdma_dev_res, &dev->backend_dev,
+                           dev->backend_eth_device_name, cmd->index);
 }
 
 static int create_uc(PVRDMADev *dev, union pvrdma_cmd_req *req,
@@ -595,12 +581,9 @@ static int create_uc(PVRDMADev *dev, union pvrdma_cmd_req *req,
 {
     struct pvrdma_cmd_create_uc *cmd = &req->create_uc;
     struct pvrdma_cmd_create_uc_resp *resp = &rsp->create_uc_resp;
-    int rc;
 
     memset(resp, 0, sizeof(*resp));
-    rc = rdma_rm_alloc_uc(&dev->rdma_dev_res, cmd->pfn, &resp->ctx_handle);
-
-    return rc;
+    return rdma_rm_alloc_uc(&dev->rdma_dev_res, cmd->pfn, &resp->ctx_handle);
 }
 
 static int destroy_uc(PVRDMADev *dev, union pvrdma_cmd_req *req,
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index 8f63584..b8aaa99 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -2533,11 +2533,7 @@ vhost_user_crypto_close_session(struct vhost_dev *dev, uint64_t session_id)
 static bool vhost_user_mem_section_filter(struct vhost_dev *dev,
                                           MemoryRegionSection *section)
 {
-    bool result;
-
-    result = memory_region_get_fd(section->mr) >= 0;
-
-    return result;
+    return memory_region_get_fd(section->mr) >= 0;
 }
 
 static int vhost_user_get_inflight_fd(struct vhost_dev *dev,
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index 6ccaaf5..06e2d5f 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -921,11 +921,8 @@ PCI_DMA_DEFINE_LDST(q_be, q_be, 64);
 static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr,
                                 dma_addr_t *plen, DMADirection dir)
 {
-    void *buf;
-
-    buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir,
-                         MEMTXATTRS_UNSPECIFIED);
-    return buf;
+    return dma_memory_map(pci_get_address_space(dev), addr, plen, dir,
+                          MEMTXATTRS_UNSPECIFIED);
 }
 
 static inline void pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len,
diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
index d6f1e01..4bfb97f 100644
--- a/migration/dirtyrate.c
+++ b/migration/dirtyrate.c
@@ -111,7 +111,6 @@ static void global_dirty_log_sync(unsigned int flag, bool one_shot)
 static DirtyPageRecord *vcpu_dirty_stat_alloc(VcpuStat *stat)
 {
     CPUState *cpu;
-    DirtyPageRecord *records;
     int nvcpu = 0;
 
     CPU_FOREACH(cpu) {
@@ -121,9 +120,7 @@ static DirtyPageRecord *vcpu_dirty_stat_alloc(VcpuStat *stat)
     stat->nvcpu = nvcpu;
     stat->rates = g_new0(DirtyRateVcpu, nvcpu);
 
-    records = g_new0(DirtyPageRecord, nvcpu);
-
-    return records;
+    return g_new0(DirtyPageRecord, nvcpu);
 }
 
 static void vcpu_dirty_stat_collect(VcpuStat *stat,
@@ -473,7 +470,6 @@ find_block_matched(RAMBlock *block, int count,
                   struct RamblockDirtyInfo *infos)
 {
     int i;
-    struct RamblockDirtyInfo *matched;
 
     for (i = 0; i < count; i++) {
         if (!strcmp(infos[i].idstr, qemu_ram_get_idstr(block))) {
@@ -492,9 +488,7 @@ find_block_matched(RAMBlock *block, int count,
         return NULL;
     }
 
-    matched = &infos[i];
-
-    return matched;
+    return &infos[i];
 }
 
 static bool compare_page_hash_info(struct RamblockDirtyInfo *info,
diff --git a/migration/tls.c b/migration/tls.c
index 73e8c9d..4d2166a 100644
--- a/migration/tls.c
+++ b/migration/tls.c
@@ -126,7 +126,6 @@ QIOChannelTLS *migration_tls_client_create(MigrationState *s,
                                            Error **errp)
 {
     QCryptoTLSCreds *creds;
-    QIOChannelTLS *tioc;
 
     creds = migration_tls_get_creds(
         s, QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, errp);
@@ -138,10 +137,7 @@ QIOChannelTLS *migration_tls_client_create(MigrationState *s,
         hostname = s->parameters.tls_hostname;
     }
 
-    tioc = qio_channel_tls_new_client(
-        ioc, creds, hostname, errp);
-
-    return tioc;
+    return qio_channel_tls_new_client(ioc, creds, hostname, errp);
 }
 
 void migration_tls_channel_connect(MigrationState *s,
diff --git a/replay/replay-time.c b/replay/replay-time.c
index 00ebcb7..ee0ebfc 100644
--- a/replay/replay-time.c
+++ b/replay/replay-time.c
@@ -48,7 +48,6 @@ void replay_read_next_clock(ReplayClockKind kind)
 /*! Reads next clock event from the input. */
 int64_t replay_read_clock(ReplayClockKind kind, int64_t raw_icount)
 {
-    int64_t ret;
     g_assert(replay_file && replay_mutex_locked());
 
     replay_advance_current_icount(raw_icount);
@@ -56,7 +55,5 @@ int64_t replay_read_clock(ReplayClockKind kind, int64_t raw_icount)
     if (replay_next_event_is(EVENT_CLOCK + kind)) {
         replay_read_next_clock(kind);
     }
-    ret = replay_state.cached_clock[kind];
-
-    return ret;
+    return replay_state.cached_clock[kind];
 }
diff --git a/scripts/coccinelle/return_directly.cocci b/scripts/coccinelle/return_directly.cocci
index 4cf50e7..6cb1b3c 100644
--- a/scripts/coccinelle/return_directly.cocci
+++ b/scripts/coccinelle/return_directly.cocci
@@ -11,9 +11,8 @@ identifier F;
 -    T VAR;
      ... when != VAR
 
--    VAR =
-+    return
-     E;
+-    VAR = (E);
 -    return VAR;
++    return E;
      ... when != VAR
  }
diff --git a/semihosting/console.c b/semihosting/console.c
index 0f976fe..5d61e82 100644
--- a/semihosting/console.c
+++ b/semihosting/console.c
@@ -43,10 +43,8 @@ static SemihostingConsole console;
 static int console_can_read(void *opaque)
 {
     SemihostingConsole *c = opaque;
-    int ret;
     g_assert(qemu_mutex_iothread_locked());
-    ret = (int) fifo8_num_free(&c->fifo);
-    return ret;
+    return (int)fifo8_num_free(&c->fifo);
 }
 
 static void console_wake_up(gpointer data, gpointer user_data)
diff --git a/softmmu/memory.c b/softmmu/memory.c
index bc0be3f..e05332d 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -2372,20 +2372,15 @@ void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
 
 int memory_region_get_fd(MemoryRegion *mr)
 {
-    int fd;
-
     RCU_READ_LOCK_GUARD();
     while (mr->alias) {
         mr = mr->alias;
     }
-    fd = mr->ram_block->fd;
-
-    return fd;
+    return mr->ram_block->fd;
 }
 
 void *memory_region_get_ram_ptr(MemoryRegion *mr)
 {
-    void *ptr;
     uint64_t offset = 0;
 
     RCU_READ_LOCK_GUARD();
@@ -2394,9 +2389,7 @@ void *memory_region_get_ram_ptr(MemoryRegion *mr)
         mr = mr->alias;
     }
     assert(mr->ram_block);
-    ptr = qemu_map_ram_ptr(mr->ram_block, offset);
-
-    return ptr;
+    return qemu_map_ram_ptr(mr->ram_block, offset);
 }
 
 MemoryRegion *memory_region_from_host(void *ptr, ram_addr_t *offset)
diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index 1b606a3..edec095 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -3236,7 +3236,6 @@ void *address_space_map(AddressSpace *as,
     hwaddr len = *plen;
     hwaddr l, xlat;
     MemoryRegion *mr;
-    void *ptr;
     FlatView *fv;
 
     if (len == 0) {
@@ -3275,9 +3274,7 @@ void *address_space_map(AddressSpace *as,
     *plen = flatview_extend_translation(fv, addr, len, mr, xlat,
                                         l, is_write, attrs);
     fuzz_dma_read_cb(addr, *plen, mr);
-    ptr = qemu_ram_ptr_length(mr->ram_block, xlat, plen, true);
-
-    return ptr;
+    return qemu_ram_ptr_length(mr->ram_block, xlat, plen, true);
 }
 
 /* Unmaps a memory region previously mapped by address_space_map().
@@ -3545,15 +3542,13 @@ bool cpu_physical_memory_is_io(hwaddr phys_addr)
 {
     MemoryRegion*mr;
     hwaddr l = 1;
-    bool res;
 
     RCU_READ_LOCK_GUARD();
     mr = address_space_translate(&address_space_memory,
                                  phys_addr, &phys_addr, &l, false,
                                  MEMTXATTRS_UNSPECIFIED);
 
-    res = !(memory_region_is_ram(mr) || memory_region_is_romd(mr));
-    return res;
+    return !(memory_region_is_ram(mr) || memory_region_is_romd(mr));
 }
 
 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque)
diff --git a/target/avr/cpu.h b/target/avr/cpu.h
index 96419c0..f19dd72 100644
--- a/target/avr/cpu.h
+++ b/target/avr/cpu.h
@@ -215,8 +215,7 @@ static inline int cpu_interrupts_enabled(CPUAVRState *env)
 
 static inline uint8_t cpu_get_sreg(CPUAVRState *env)
 {
-    uint8_t sreg;
-    sreg = (env->sregC) << 0
+    return (env->sregC) << 0
          | (env->sregZ) << 1
          | (env->sregN) << 2
          | (env->sregV) << 3
@@ -224,7 +223,6 @@ static inline uint8_t cpu_get_sreg(CPUAVRState *env)
          | (env->sregH) << 5
          | (env->sregT) << 6
          | (env->sregI) << 7;
-    return sreg;
 }
 
 static inline void cpu_set_sreg(CPUAVRState *env, uint8_t sreg)
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 46b04cb..e7b0e12 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -128,13 +128,11 @@ static inline bool cpu_loongarch_hw_interrupts_pending(CPULoongArchState *env)
 {
     uint32_t pending;
     uint32_t status;
-    bool r;
 
     pending = FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS);
     status  = FIELD_EX64(env->CSR_ECFG, CSR_ECFG, LIE);
 
-    r = (pending & status) != 0;
-    return r;
+    return (pending & status) != 0;
 }
 
 static void loongarch_cpu_do_interrupt(CPUState *cs)
diff --git a/target/mips/tcg/dsp_helper.c b/target/mips/tcg/dsp_helper.c
index 09b6e5f..7a4362c 100644
--- a/target/mips/tcg/dsp_helper.c
+++ b/target/mips/tcg/dsp_helper.c
@@ -3281,15 +3281,12 @@ target_ulong helper_dextr_l(target_ulong ac, target_ulong shift,
                             CPUMIPSState *env)
 {
     uint64_t temp[3];
-    target_ulong ret;
 
     shift = shift & 0x3F;
 
     mipsdsp_rndrashift_acc(temp, ac, shift, env);
 
-    ret = (temp[1] << 63) | (temp[0] >> 1);
-
-    return ret;
+    return (temp[1] << 63) | (temp[0] >> 1);
 }
 
 target_ulong helper_dextr_r_l(target_ulong ac, target_ulong shift,
@@ -3297,7 +3294,6 @@ target_ulong helper_dextr_r_l(target_ulong ac, target_ulong shift,
 {
     uint64_t temp[3];
     uint32_t temp128;
-    target_ulong ret;
 
     shift = shift & 0x3F;
     mipsdsp_rndrashift_acc(temp, ac, shift, env);
@@ -3317,9 +3313,7 @@ target_ulong helper_dextr_r_l(target_ulong ac, target_ulong shift,
         set_DSPControl_overflow_flag(1, 23, env);
     }
 
-    ret = (temp[1] << 63) | (temp[0] >> 1);
-
-    return ret;
+    return (temp[1] << 63) | (temp[0] >> 1);
 }
 
 target_ulong helper_dextr_rs_l(target_ulong ac, target_ulong shift,
@@ -3327,7 +3321,6 @@ target_ulong helper_dextr_rs_l(target_ulong ac, target_ulong shift,
 {
     uint64_t temp[3];
     uint32_t temp128;
-    target_ulong ret;
 
     shift = shift & 0x3F;
     mipsdsp_rndrashift_acc(temp, ac, shift, env);
@@ -3354,9 +3347,7 @@ target_ulong helper_dextr_rs_l(target_ulong ac, target_ulong shift,
         set_DSPControl_overflow_flag(1, 23, env);
     }
 
-    ret = (temp[1] << 63) | (temp[0] >> 1);
-
-    return ret;
+    return (temp[1] << 63) | (temp[0] >> 1);
 }
 #endif
 
diff --git a/target/riscv/debug.c b/target/riscv/debug.c
index 26ea764..e44848d 100644
--- a/target/riscv/debug.c
+++ b/target/riscv/debug.c
@@ -243,15 +243,13 @@ static void do_trigger_action(CPURISCVState *env, target_ulong trigger_index)
 
 static uint32_t type2_breakpoint_size(CPURISCVState *env, target_ulong ctrl)
 {
-    uint32_t size, sizelo, sizehi = 0;
+    uint32_t sizelo, sizehi = 0;
 
     if (riscv_cpu_mxl(env) == MXL_RV64) {
         sizehi = extract32(ctrl, 21, 2);
     }
     sizelo = extract32(ctrl, 16, 2);
-    size = (sizehi << 2) | sizelo;
-
-    return size;
+    return (sizehi << 2) | sizelo;
 }
 
 static inline bool type2_breakpoint_enabled(target_ulong ctrl)
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 0020b9a..00de879 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -2791,31 +2791,25 @@ static inline uint16_t
 vssrl16(CPURISCVState *env, int vxrm, uint16_t a, uint16_t b)
 {
     uint8_t round, shift = b & 0xf;
-    uint16_t res;
 
     round = get_round(vxrm, a, shift);
-    res   = (a >> shift)  + round;
-    return res;
+    return (a >> shift) + round;
 }
 static inline uint32_t
 vssrl32(CPURISCVState *env, int vxrm, uint32_t a, uint32_t b)
 {
     uint8_t round, shift = b & 0x1f;
-    uint32_t res;
 
     round = get_round(vxrm, a, shift);
-    res   = (a >> shift)  + round;
-    return res;
+    return (a >> shift) + round;
 }
 static inline uint64_t
 vssrl64(CPURISCVState *env, int vxrm, uint64_t a, uint64_t b)
 {
     uint8_t round, shift = b & 0x3f;
-    uint64_t res;
 
     round = get_round(vxrm, a, shift);
-    res   = (a >> shift)  + round;
-    return res;
+    return (a >> shift) + round;
 }
 RVVCALL(OPIVV2_RM, vssrl_vv_b, OP_UUU_B, H1, H1, H1, vssrl8)
 RVVCALL(OPIVV2_RM, vssrl_vv_h, OP_UUU_H, H2, H2, H2, vssrl16)
@@ -2839,41 +2833,33 @@ static inline int8_t
 vssra8(CPURISCVState *env, int vxrm, int8_t a, int8_t b)
 {
     uint8_t round, shift = b & 0x7;
-    int8_t res;
 
     round = get_round(vxrm, a, shift);
-    res   = (a >> shift)  + round;
-    return res;
+    return (a >> shift) + round;
 }
 static inline int16_t
 vssra16(CPURISCVState *env, int vxrm, int16_t a, int16_t b)
 {
     uint8_t round, shift = b & 0xf;
-    int16_t res;
 
     round = get_round(vxrm, a, shift);
-    res   = (a >> shift)  + round;
-    return res;
+    return (a >> shift) + round;
 }
 static inline int32_t
 vssra32(CPURISCVState *env, int vxrm, int32_t a, int32_t b)
 {
     uint8_t round, shift = b & 0x1f;
-    int32_t res;
 
     round = get_round(vxrm, a, shift);
-    res   = (a >> shift)  + round;
-    return res;
+    return (a >> shift) + round;
 }
 static inline int64_t
 vssra64(CPURISCVState *env, int vxrm, int64_t a, int64_t b)
 {
     uint8_t round, shift = b & 0x3f;
-    int64_t res;
 
     round = get_round(vxrm, a, shift);
-    res   = (a >> shift)  + round;
-    return res;
+    return (a >> shift) + round;
 }
 
 RVVCALL(OPIVV2_RM, vssra_vv_b, OP_SSS_B, H1, H1, H1, vssra8)
diff --git a/tests/bench/benchmark-crypto-akcipher.c b/tests/bench/benchmark-crypto-akcipher.c
index 15e6955..5e68cb0 100644
--- a/tests/bench/benchmark-crypto-akcipher.c
+++ b/tests/bench/benchmark-crypto-akcipher.c
@@ -24,14 +24,12 @@ static QCryptoAkCipher *create_rsa_akcipher(const uint8_t *priv_key,
                                             QCryptoHashAlgorithm hash)
 {
     QCryptoAkCipherOptions opt;
-    QCryptoAkCipher *rsa;
 
     opt.alg = QCRYPTO_AKCIPHER_ALG_RSA;
     opt.u.rsa.padding_alg = padding;
     opt.u.rsa.hash_alg = hash;
-    rsa = qcrypto_akcipher_new(&opt, QCRYPTO_AKCIPHER_KEY_TYPE_PRIVATE,
-                               priv_key, keylen, &error_abort);
-    return rsa;
+    return qcrypto_akcipher_new(&opt, QCRYPTO_AKCIPHER_KEY_TYPE_PRIVATE,
+                                priv_key, keylen, &error_abort);
 }
 
 static void test_rsa_speed(const uint8_t *priv_key, size_t keylen,
diff --git a/tests/qtest/erst-test.c b/tests/qtest/erst-test.c
index 4e768a1..974e8bc 100644
--- a/tests/qtest/erst-test.c
+++ b/tests/qtest/erst-test.c
@@ -154,10 +154,7 @@ static void test_acpi_erst_basic(void)
 
 int main(int argc, char **argv)
 {
-    int ret;
-
     g_test_init(&argc, &argv, NULL);
     qtest_add_func("/acpi-erst/basic", test_acpi_erst_basic);
-    ret = g_test_run();
-    return ret;
+    return g_test_run();
 }
diff --git a/tests/qtest/hexloader-test.c b/tests/qtest/hexloader-test.c
index 8b7aa2d..3023548 100644
--- a/tests/qtest/hexloader-test.c
+++ b/tests/qtest/hexloader-test.c
@@ -34,12 +34,8 @@ static void hex_loader_test(void)
 
 int main(int argc, char **argv)
 {
-    int ret;
-
     g_test_init(&argc, &argv, NULL);
 
     qtest_add_func("/tmp/hex_loader", hex_loader_test);
-    ret = g_test_run();
-
-    return ret;
+    return g_test_run();
 }
diff --git a/tests/qtest/pvpanic-pci-test.c b/tests/qtest/pvpanic-pci-test.c
index c82c365..2c05b37 100644
--- a/tests/qtest/pvpanic-pci-test.c
+++ b/tests/qtest/pvpanic-pci-test.c
@@ -86,13 +86,9 @@ static void test_panic(void)
 
 int main(int argc, char **argv)
 {
-    int ret;
-
     g_test_init(&argc, &argv, NULL);
     qtest_add_func("/pvpanic-pci/panic", test_panic);
     qtest_add_func("/pvpanic-pci/panic-nopause", test_panic_nopause);
 
-    ret = g_test_run();
-
-    return ret;
+    return g_test_run();
 }
diff --git a/tests/qtest/pvpanic-test.c b/tests/qtest/pvpanic-test.c
index bc7b7df..78f1cf8 100644
--- a/tests/qtest/pvpanic-test.c
+++ b/tests/qtest/pvpanic-test.c
@@ -59,13 +59,9 @@ static void test_panic(void)
 
 int main(int argc, char **argv)
 {
-    int ret;
-
     g_test_init(&argc, &argv, NULL);
     qtest_add_func("/pvpanic/panic", test_panic);
     qtest_add_func("/pvpanic/panic-nopause", test_panic_nopause);
 
-    ret = g_test_run();
-
-    return ret;
+    return g_test_run();
 }
diff --git a/tests/qtest/test-filter-mirror.c b/tests/qtest/test-filter-mirror.c
index c8b0a92..248fc88 100644
--- a/tests/qtest/test-filter-mirror.c
+++ b/tests/qtest/test-filter-mirror.c
@@ -76,12 +76,8 @@ static void test_mirror(void)
 
 int main(int argc, char **argv)
 {
-    int ret;
-
     g_test_init(&argc, &argv, NULL);
 
     qtest_add_func("/netfilter/mirror", test_mirror);
-    ret = g_test_run();
-
-    return ret;
+    return g_test_run();
 }
diff --git a/tests/qtest/virtio-ccw-test.c b/tests/qtest/virtio-ccw-test.c
index d052364..2de77bb 100644
--- a/tests/qtest/virtio-ccw-test.c
+++ b/tests/qtest/virtio-ccw-test.c
@@ -95,8 +95,6 @@ static void virtio_scsi_hotplug(void)
 
 int main(int argc, char **argv)
 {
-    int ret;
-
     g_test_init(&argc, &argv, NULL);
     qtest_add_func("/virtio/balloon/nop", virtio_balloon_nop);
     qtest_add_func("/virtio/console/nop", virtconsole_nop);
@@ -109,7 +107,5 @@ int main(int argc, char **argv)
     qtest_add_func("/virtio/scsi/nop", virtio_scsi_nop);
     qtest_add_func("/virtio/scsi/hotplug", virtio_scsi_hotplug);
 
-    ret = g_test_run();
-
-    return ret;
+    return g_test_run();
 }
diff --git a/tests/tcg/multiarch/sha512.c b/tests/tcg/multiarch/sha512.c
index e172982..9e701bc 100644
--- a/tests/tcg/multiarch/sha512.c
+++ b/tests/tcg/multiarch/sha512.c
@@ -855,8 +855,6 @@ plan_tests(unsigned int tests)
 static int
 exit_status_(void)
 {
-    int r;
-
     /* If there's no plan, just return the number of failures */
     if(no_plan || !have_plan) {
         return failures;
@@ -865,15 +863,12 @@ exit_status_(void)
     /* Ran too many tests?  Return the number of tests that were run
        that shouldn't have been */
     if(e_tests < test_count) {
-        r = test_count - e_tests;
-        return r;
+        return test_count - e_tests;
     }
 
     /* Return the number of tests that failed + the number of tests
        that weren't run */
-    r = failures + e_tests - test_count;
-
-    return r;
+    return failures + e_tests - test_count;
 }
 
 int
diff --git a/tools/virtiofsd/fuse_lowlevel.c b/tools/virtiofsd/fuse_lowlevel.c
index 2f08471..194a1b8 100644
--- a/tools/virtiofsd/fuse_lowlevel.c
+++ b/tools/virtiofsd/fuse_lowlevel.c
@@ -216,7 +216,6 @@ static int send_reply(fuse_req_t req, int error, const void *arg,
 
 int fuse_reply_iov(fuse_req_t req, const struct iovec *iov, int count)
 {
-    int res;
     g_autofree struct iovec *padded_iov = NULL;
 
     padded_iov = g_try_new(struct iovec, count + 1);
@@ -227,9 +226,7 @@ int fuse_reply_iov(fuse_req_t req, const struct iovec *iov, int count)
     memcpy(padded_iov + 1, iov, count * sizeof(struct iovec));
     count++;
 
-    res = send_reply_iov(req, 0, padded_iov, count);
-
-    return res;
+    return send_reply_iov(req, 0, padded_iov, count);
 }
 
 
@@ -589,7 +586,6 @@ int fuse_reply_ioctl_retry(fuse_req_t req, const struct iovec *in_iov,
     g_autofree struct fuse_ioctl_iovec *out_fiov = NULL;
     struct iovec iov[4];
     size_t count = 1;
-    int res;
 
     memset(&arg, 0, sizeof(arg));
     arg.flags |= FUSE_IOCTL_RETRY;
@@ -601,15 +597,13 @@ int fuse_reply_ioctl_retry(fuse_req_t req, const struct iovec *in_iov,
 
     /* Can't handle non-compat 64bit ioctls on 32bit */
     if (sizeof(void *) == 4 && req->ioctl_64bit) {
-        res = fuse_reply_err(req, EINVAL);
-        return res;
+        return fuse_reply_err(req, EINVAL);
     }
 
     if (in_count) {
         in_fiov = fuse_ioctl_iovec_copy(in_iov, in_count);
         if (!in_fiov) {
-            res = fuse_reply_err(req, ENOMEM);
-            return res;
+            return fuse_reply_err(req, ENOMEM);
         }
 
         iov[count].iov_base = (void *)in_fiov;
@@ -619,8 +613,7 @@ int fuse_reply_ioctl_retry(fuse_req_t req, const struct iovec *in_iov,
     if (out_count) {
         out_fiov = fuse_ioctl_iovec_copy(out_iov, out_count);
         if (!out_fiov) {
-            res = fuse_reply_err(req, ENOMEM);
-            return res;
+            return fuse_reply_err(req, ENOMEM);
         }
 
         iov[count].iov_base = (void *)out_fiov;
@@ -628,9 +621,7 @@ int fuse_reply_ioctl_retry(fuse_req_t req, const struct iovec *in_iov,
         count++;
     }
 
-    res = send_reply_iov(req, 0, iov, count);
-
-    return res;
+    return send_reply_iov(req, 0, iov, count);
 }
 
 int fuse_reply_ioctl(fuse_req_t req, int result, const void *buf, size_t size)
@@ -659,7 +650,6 @@ int fuse_reply_ioctl_iov(fuse_req_t req, int result, const struct iovec *iov,
 {
     g_autofree struct iovec *padded_iov = NULL;
     struct fuse_ioctl_out arg;
-    int res;
 
     padded_iov = g_try_new(struct iovec, count + 2);
     if (padded_iov == NULL) {
@@ -673,9 +663,7 @@ int fuse_reply_ioctl_iov(fuse_req_t req, int result, const struct iovec *iov,
 
     memcpy(&padded_iov[2], iov, count * sizeof(struct iovec));
 
-    res = send_reply_iov(req, 0, padded_iov, count + 2);
-
-    return res;
+    return send_reply_iov(req, 0, padded_iov, count + 2);
 }
 
 int fuse_reply_poll(fuse_req_t req, unsigned revents)