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Wed, 24 Jun 2020 08:37:43 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-121.ams2.redhat.com [10.36.112.121]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D64AD61983; Wed, 24 Jun 2020 08:37:42 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id B8630113847F; Wed, 24 Jun 2020 10:37:37 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH v2 17/25] riscv/sifive_u: Fix sifive_u_soc_realize() error API violations Date: Wed, 24 Jun 2020 10:37:29 +0200 Message-Id: <20200624083737.3086768-18-armbru@redhat.com> In-Reply-To: <20200624083737.3086768-1-armbru@redhat.com> References: <20200624083737.3086768-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.120; envelope-from=armbru@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/24 03:27:53 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-riscv@nongnu.org, Sagar Karandikar , Bastian Koppelmann , Alistair Francis , Palmer Dabbelt , Bin Meng Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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() four times before checking it. Harmless, because the first three can't actually fail (I think). Fix by checking for failure right away. Cc: Palmer Dabbelt Cc: Alistair Francis Cc: Sagar Karandikar Cc: Bastian Koppelmann Cc: Bin Meng Cc: qemu-riscv@nongnu.org Signed-off-by: Markus Armbruster Reviewed-by: Alistair Francis --- hw/riscv/sifive_u.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 7d051e7c92..a1d2edfe13 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -677,11 +677,15 @@ 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->gpio), "ngpio", 16); - sysbus_realize(SYS_BUS_DEVICE(&s->gpio), &err); + if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), errp)) { + return; + } sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio), 0, memmap[SIFIVE_U_GPIO].base); /* Pass all GPIOs to the SOC layer so they are available to the board */ @@ -695,7 +699,9 @@ static void sifive_u_soc_realize(DeviceState *dev, Error **errp) } 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); if (nd->used) {