hw/net/can: Make CanBusClientInfo::can_receive() return a boolean

The CanBusClientInfo::can_receive handler return whether the
device can or can not receive new frames. Make it obvious by
returning a boolean type.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>

5 files changed, 9 insertions, 9 deletions

diff --git a/hw/net/allwinner-sun8i-emac.c b/hw/net/allwinner-sun8i-emac.c
index 3fc5e34640..033eaa85bf 100644
--- a/hw/net/allwinner-sun8i-emac.c
+++ b/hw/net/allwinner-sun8i-emac.c
@@ -395,7 +395,7 @@ static void allwinner_sun8i_emac_flush_desc(FrameDescriptor *desc,
     cpu_physical_memory_write(phys_addr, desc, sizeof(*desc));
 }
 
-static int allwinner_sun8i_emac_can_receive(NetClientState *nc)
+static bool allwinner_sun8i_emac_can_receive(NetClientState *nc)
 {
     AwSun8iEmacState *s = qemu_get_nic_opaque(nc);
     FrameDescriptor desc;
diff --git a/hw/net/can/can_sja1000.c b/hw/net/can/can_sja1000.c
index 39c78faf9b..ea915a023a 100644
--- a/hw/net/can/can_sja1000.c
+++ b/hw/net/can/can_sja1000.c
@@ -733,21 +733,21 @@ uint64_t can_sja_mem_read(CanSJA1000State *s, hwaddr addr, unsigned size)
     return temp;
 }
 
-int can_sja_can_receive(CanBusClientState *client)
+bool can_sja_can_receive(CanBusClientState *client)
 {
     CanSJA1000State *s = container_of(client, CanSJA1000State, bus_client);
 
     if (s->clock & 0x80) { /* PeliCAN Mode */
         if (s->mode & 0x01) { /* reset mode. */
-            return 0;
+            return false;
         }
     } else { /* BasicCAN mode */
         if (s->control & 0x01) {
-            return 0;
+            return false;
         }
     }
 
-    return 1; /* always return 1, when operation mode */
+    return true; /* always return true, when operation mode */
 }
 
 ssize_t can_sja_receive(CanBusClientState *client, const qemu_can_frame *frames,
diff --git a/hw/net/can/can_sja1000.h b/hw/net/can/can_sja1000.h
index 220a622087..7ca9cd681e 100644
--- a/hw/net/can/can_sja1000.h
+++ b/hw/net/can/can_sja1000.h
@@ -137,7 +137,7 @@ void can_sja_disconnect(CanSJA1000State *s);
 
 int can_sja_init(CanSJA1000State *s, qemu_irq irq);
 
-int can_sja_can_receive(CanBusClientState *client);
+bool can_sja_can_receive(CanBusClientState *client);
 
 ssize_t can_sja_receive(CanBusClientState *client,
                         const qemu_can_frame *frames, size_t frames_cnt);
diff --git a/include/net/can_emu.h b/include/net/can_emu.h
index d4fc51b57d..fce9770928 100644
--- a/include/net/can_emu.h
+++ b/include/net/can_emu.h
@@ -83,7 +83,7 @@ typedef struct CanBusClientState CanBusClientState;
 typedef struct CanBusState CanBusState;
 
 typedef struct CanBusClientInfo {
-    int (*can_receive)(CanBusClientState *);
+    bool (*can_receive)(CanBusClientState *);
     ssize_t (*receive)(CanBusClientState *,
         const struct qemu_can_frame *frames, size_t frames_cnt);
 } CanBusClientInfo;
diff --git a/net/can/can_socketcan.c b/net/can/can_socketcan.c
index 29bfacd4f8..807f31fcde 100644
--- a/net/can/can_socketcan.c
+++ b/net/can/can_socketcan.c
@@ -110,9 +110,9 @@ static void can_host_socketcan_read(void *opaque)
     }
 }
 
-static int can_host_socketcan_can_receive(CanBusClientState *client)
+static bool can_host_socketcan_can_receive(CanBusClientState *client)
 {
-    return 1;
+    return true;
 }
 
 static ssize_t can_host_socketcan_receive(CanBusClientState *client,