diff mbox series

[18/22] riscv/sifive_u: Fix sifive_u_soc_realize() error API violations

Message ID 20200622104250.1404835-19-armbru@redhat.com
State New
Headers show
Series None | expand

Commit Message

Markus Armbruster June 22, 2020, 10:42 a.m. UTC 
The Error ** argument must be NULL, &error_abort, &error_fatal, or a
pointer to a variable containing NULL.  Passing an argument of the
latter kind twice without clearing it in between is wrong: if the
first call sets an error, it no longer points to NULL for the second
call.

sifive_u_soc_realize() is wrong that way: it passes &err to
sysbus_realize() three times before checking it.  Harmless, because
the first two can't actually fail (I think).

Fix by checking for failure right away.

Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: qemu-riscv@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/riscv/sifive_u.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index ea197ab64f..3857b92d9a 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -587,11 +587,15 @@  static void sifive_u_soc_realize(DeviceState *dev, Error **errp)
         memmap[SIFIVE_U_CLINT].size, ms->smp.cpus,
         SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, false);
 
-    sysbus_realize(SYS_BUS_DEVICE(&s->prci), &err);
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->prci), errp)) {
+        return;
+    }
     sysbus_mmio_map(SYS_BUS_DEVICE(&s->prci), 0, memmap[SIFIVE_U_PRCI].base);
 
     qdev_prop_set_uint32(DEVICE(&s->otp), "serial", s->serial);
-    sysbus_realize(SYS_BUS_DEVICE(&s->otp), &err);
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->otp), errp)) {
+        return;
+    }
     sysbus_mmio_map(SYS_BUS_DEVICE(&s->otp), 0, memmap[SIFIVE_U_OTP].base);
 
     for (i = 0; i < SIFIVE_U_PLIC_NUM_SOURCES; i++) {