From 74de5504fd063019433ec0746105da774ede790d Mon Sep 17 00:00:00 2001 From: Shmulik Ladkani Date: Tue, 16 Jun 2015 11:24:39 +0300 Subject: [PATCH] pci: Don't register a specialized 'config_write' if default behavior is intended Few devices have their specialized 'config_write' methods which simply call 'pci_default_write_config' followed by a 'msix_write_config' or 'msi_write_config' calls, using exact same arguments. This is unnecessary as 'pci_default_write_config' already invokes 'msi_write_config' and 'msix_write_config'. Also, since 'pci_default_write_config' is the default 'config_write' handler, we can simply avoid the registration of these specialized versions. Cc: Leonid Shatz Signed-off-by: Shmulik Ladkani Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/misc/ivshmem.c | 1 - hw/net/vmxnet3.c | 9 --------- hw/scsi/megasas.c | 8 -------- hw/scsi/vmw_pvscsi.c | 8 -------- 4 files changed, 26 deletions(-) diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c index 5d272c84e9..231c35fdef 100644 --- a/hw/misc/ivshmem.c +++ b/hw/misc/ivshmem.c @@ -698,7 +698,6 @@ static void ivshmem_write_config(PCIDevice *pci_dev, uint32_t address, uint32_t val, int len) { pci_default_write_config(pci_dev, address, val, len); - msix_write_config(pci_dev, address, val, len); } static int pci_ivshmem_init(PCIDevice *dev) diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c index dfb328debd..34ffafd5a6 100644 --- a/hw/net/vmxnet3.c +++ b/hw/net/vmxnet3.c @@ -2481,14 +2481,6 @@ static const VMStateDescription vmstate_vmxnet3 = { } }; -static void -vmxnet3_write_config(PCIDevice *pci_dev, uint32_t addr, uint32_t val, int len) -{ - pci_default_write_config(pci_dev, addr, val, len); - msix_write_config(pci_dev, addr, val, len); - msi_write_config(pci_dev, addr, val, len); -} - static Property vmxnet3_properties[] = { DEFINE_NIC_PROPERTIES(VMXNET3State, conf), DEFINE_PROP_END_OF_LIST(), @@ -2507,7 +2499,6 @@ static void vmxnet3_class_init(ObjectClass *class, void *data) c->class_id = PCI_CLASS_NETWORK_ETHERNET; c->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE; c->subsystem_id = PCI_DEVICE_ID_VMWARE_VMXNET3; - c->config_write = vmxnet3_write_config, dc->desc = "VMWare Paravirtualized Ethernet v3"; dc->reset = vmxnet3_qdev_reset; dc->vmsd = &vmstate_vmxnet3; diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c index 91a5d97c73..51ba9e0e6e 100644 --- a/hw/scsi/megasas.c +++ b/hw/scsi/megasas.c @@ -2407,13 +2407,6 @@ static void megasas_scsi_realize(PCIDevice *dev, Error **errp) } } -static void -megasas_write_config(PCIDevice *pci, uint32_t addr, uint32_t val, int len) -{ - pci_default_write_config(pci, addr, val, len); - msi_write_config(pci, addr, val, len); -} - static Property megasas_properties_gen1[] = { DEFINE_PROP_UINT32("max_sge", MegasasState, fw_sge, MEGASAS_DEFAULT_SGE), @@ -2516,7 +2509,6 @@ static void megasas_class_init(ObjectClass *oc, void *data) dc->vmsd = info->vmsd; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); dc->desc = info->desc; - pc->config_write = megasas_write_config; } static const TypeInfo megasas_info = { diff --git a/hw/scsi/vmw_pvscsi.c b/hw/scsi/vmw_pvscsi.c index c6148d380e..9c71f31fe2 100644 --- a/hw/scsi/vmw_pvscsi.c +++ b/hw/scsi/vmw_pvscsi.c @@ -1174,13 +1174,6 @@ static const VMStateDescription vmstate_pvscsi = { } }; -static void -pvscsi_write_config(PCIDevice *pci, uint32_t addr, uint32_t val, int len) -{ - pci_default_write_config(pci, addr, val, len); - msi_write_config(pci, addr, val, len); -} - static Property pvscsi_properties[] = { DEFINE_PROP_UINT8("use_msg", PVSCSIState, use_msg, 1), DEFINE_PROP_END_OF_LIST(), @@ -1202,7 +1195,6 @@ static void pvscsi_class_init(ObjectClass *klass, void *data) dc->vmsd = &vmstate_pvscsi; dc->props = pvscsi_properties; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); - k->config_write = pvscsi_write_config; hc->unplug = pvscsi_hot_unplug; hc->plug = pvscsi_hotplug; }