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Tsirkin" , Igor Mammedov , Ani Sinha , Marcel Apfelbaum , Paolo Bonzini , Richard Henderson , Eduardo Habkost Cc: Markus Armbruster , Philippe Mathieu-Daude , qemu-devel@nongnu.org Subject: [PATCH] hw/acpi: changes towards enabling -Wshadow=local Date: Fri, 22 Sep 2023 18:12:02 +0530 Message-Id: <20230922124203.127110-1-anisinha@redhat.com> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 Received-SPF: pass client-ip=170.10.133.124; envelope-from=anisinha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Code changes in acpi that addresses all compiler complaints coming from enabling -Wshadow flags. Enabling -Wshadow catches cases of local variables shadowing other local variables or parameters. These makes the code confusing and/or adds bugs that are difficult to catch. The code is tested to build with and without the flag turned on. CC: Markus Armbruster CC: Philippe Mathieu-Daude CC: mst@redhat.com CC: imammedo@redhat.com Message-Id: <87r0mqlf9x.fsf@pond.sub.org> Signed-off-by: Ani Sinha Reviewed-by: Michael S. Tsirkin --- hw/acpi/cpu_hotplug.c | 25 +++++++++++++------------ hw/i386/acpi-build.c | 24 ++++++++++++------------ hw/smbios/smbios.c | 37 +++++++++++++++++++------------------ 3 files changed, 44 insertions(+), 42 deletions(-) diff --git a/hw/acpi/cpu_hotplug.c b/hw/acpi/cpu_hotplug.c index ff14c3f410..634bbecb31 100644 --- a/hw/acpi/cpu_hotplug.c +++ b/hw/acpi/cpu_hotplug.c @@ -265,26 +265,27 @@ void build_legacy_cpu_hotplug_aml(Aml *ctx, MachineState *machine, /* build Processor object for each processor */ for (i = 0; i < apic_ids->len; i++) { - int apic_id = apic_ids->cpus[i].arch_id; + int cpu_apic_id = apic_ids->cpus[i].arch_id; - assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT); + assert(cpu_apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT); - dev = aml_processor(i, 0, 0, "CP%.02X", apic_id); + dev = aml_processor(i, 0, 0, "CP%.02X", cpu_apic_id); method = aml_method("_MAT", 0, AML_NOTSERIALIZED); aml_append(method, - aml_return(aml_call2(CPU_MAT_METHOD, aml_int(apic_id), aml_int(i)) + aml_return(aml_call2(CPU_MAT_METHOD, + aml_int(cpu_apic_id), aml_int(i)) )); aml_append(dev, method); method = aml_method("_STA", 0, AML_NOTSERIALIZED); aml_append(method, - aml_return(aml_call1(CPU_STATUS_METHOD, aml_int(apic_id)))); + aml_return(aml_call1(CPU_STATUS_METHOD, aml_int(cpu_apic_id)))); aml_append(dev, method); method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); aml_append(method, - aml_return(aml_call2(CPU_EJECT_METHOD, aml_int(apic_id), + aml_return(aml_call2(CPU_EJECT_METHOD, aml_int(cpu_apic_id), aml_arg(0))) ); aml_append(dev, method); @@ -298,11 +299,11 @@ void build_legacy_cpu_hotplug_aml(Aml *ctx, MachineState *machine, /* Arg0 = APIC ID */ method = aml_method(AML_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); for (i = 0; i < apic_ids->len; i++) { - int apic_id = apic_ids->cpus[i].arch_id; + int cpu_apic_id = apic_ids->cpus[i].arch_id; - if_ctx = aml_if(aml_equal(aml_arg(0), aml_int(apic_id))); + if_ctx = aml_if(aml_equal(aml_arg(0), aml_int(cpu_apic_id))); aml_append(if_ctx, - aml_notify(aml_name("CP%.02X", apic_id), aml_arg(1)) + aml_notify(aml_name("CP%.02X", cpu_apic_id), aml_arg(1)) ); aml_append(method, if_ctx); } @@ -319,13 +320,13 @@ void build_legacy_cpu_hotplug_aml(Aml *ctx, MachineState *machine, aml_varpackage(x86ms->apic_id_limit); for (i = 0, apic_idx = 0; i < apic_ids->len; i++) { - int apic_id = apic_ids->cpus[i].arch_id; + int cpu_apic_id = apic_ids->cpus[i].arch_id; - for (; apic_idx < apic_id; apic_idx++) { + for (; apic_idx < cpu_apic_id; apic_idx++) { aml_append(pkg, aml_int(0)); } aml_append(pkg, aml_int(apic_ids->cpus[i].cpu ? 1 : 0)); - apic_idx = apic_id + 1; + apic_idx = cpu_apic_id + 1; } aml_append(sb_scope, aml_name_decl(CPU_ON_BITMAP, pkg)); aml_append(ctx, sb_scope); diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 4d2d40bab5..95199c8900 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -1585,12 +1585,12 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); if (pci_bus_is_cxl(bus)) { - struct Aml *pkg = aml_package(2); + struct Aml *aml_pkg = aml_package(2); aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0016"))); - aml_append(pkg, aml_eisaid("PNP0A08")); - aml_append(pkg, aml_eisaid("PNP0A03")); - aml_append(dev, aml_name_decl("_CID", pkg)); + aml_append(aml_pkg, aml_eisaid("PNP0A08")); + aml_append(aml_pkg, aml_eisaid("PNP0A03")); + aml_append(dev, aml_name_decl("_CID", aml_pkg)); build_cxl_osc_method(dev); } else if (pci_bus_is_express(bus)) { aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); @@ -1783,14 +1783,14 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, Object *pci_host = acpi_get_i386_pci_host(); if (pci_host) { - PCIBus *bus = PCI_HOST_BRIDGE(pci_host)->bus; - Aml *scope = aml_scope("PCI0"); + PCIBus *pbus = PCI_HOST_BRIDGE(pci_host)->bus; + Aml *ascope = aml_scope("PCI0"); /* Scan all PCI buses. Generate tables to support hotplug. */ - build_append_pci_bus_devices(scope, bus); - if (object_property_find(OBJECT(bus), ACPI_PCIHP_PROP_BSEL)) { - build_append_pcihp_slots(scope, bus); + build_append_pci_bus_devices(ascope, pbus); + if (object_property_find(OBJECT(pbus), ACPI_PCIHP_PROP_BSEL)) { + build_append_pcihp_slots(ascope, pbus); } - aml_append(sb_scope, scope); + aml_append(sb_scope, ascope); } } @@ -1842,10 +1842,10 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, bool has_pcnt; Object *pci_host = acpi_get_i386_pci_host(); - PCIBus *bus = PCI_HOST_BRIDGE(pci_host)->bus; + PCIBus *b = PCI_HOST_BRIDGE(pci_host)->bus; scope = aml_scope("\\_SB.PCI0"); - has_pcnt = build_append_notfication_callback(scope, bus); + has_pcnt = build_append_notfication_callback(scope, b); if (has_pcnt) { aml_append(dsdt, scope); } diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c index b753705856..2a90601ac5 100644 --- a/hw/smbios/smbios.c +++ b/hw/smbios/smbios.c @@ -1423,13 +1423,14 @@ void smbios_entry_add(QemuOpts *opts, Error **errp) if (!qemu_opts_validate(opts, qemu_smbios_type8_opts, errp)) { return; } - struct type8_instance *t; - t = g_new0(struct type8_instance, 1); - save_opt(&t->internal_reference, opts, "internal_reference"); - save_opt(&t->external_reference, opts, "external_reference"); - t->connector_type = qemu_opt_get_number(opts, "connector_type", 0); - t->port_type = qemu_opt_get_number(opts, "port_type", 0); - QTAILQ_INSERT_TAIL(&type8, t, next); + struct type8_instance *t8_i; + t8_i = g_new0(struct type8_instance, 1); + save_opt(&t8_i->internal_reference, opts, "internal_reference"); + save_opt(&t8_i->external_reference, opts, "external_reference"); + t8_i->connector_type = qemu_opt_get_number(opts, + "connector_type", 0); + t8_i->port_type = qemu_opt_get_number(opts, "port_type", 0); + QTAILQ_INSERT_TAIL(&type8, t8_i, next); return; case 11: if (!qemu_opts_validate(opts, qemu_smbios_type11_opts, errp)) { @@ -1452,27 +1453,27 @@ void smbios_entry_add(QemuOpts *opts, Error **errp) type17.speed = qemu_opt_get_number(opts, "speed", 0); return; case 41: { - struct type41_instance *t; + struct type41_instance *t41_i; Error *local_err = NULL; if (!qemu_opts_validate(opts, qemu_smbios_type41_opts, errp)) { return; } - t = g_new0(struct type41_instance, 1); - save_opt(&t->designation, opts, "designation"); - t->kind = qapi_enum_parse(&type41_kind_lookup, - qemu_opt_get(opts, "kind"), - 0, &local_err) + 1; - t->kind |= 0x80; /* enabled */ + t41_i = g_new0(struct type41_instance, 1); + save_opt(&t41_i->designation, opts, "designation"); + t41_i->kind = qapi_enum_parse(&type41_kind_lookup, + qemu_opt_get(opts, "kind"), + 0, &local_err) + 1; + t41_i->kind |= 0x80; /* enabled */ if (local_err != NULL) { error_propagate(errp, local_err); - g_free(t); + g_free(t41_i); return; } - t->instance = qemu_opt_get_number(opts, "instance", 1); - save_opt(&t->pcidev, opts, "pcidev"); + t41_i->instance = qemu_opt_get_number(opts, "instance", 1); + save_opt(&t41_i->pcidev, opts, "pcidev"); - QTAILQ_INSERT_TAIL(&type41, t, next); + QTAILQ_INSERT_TAIL(&type41, t41_i, next); return; } default: