diff options
Diffstat (limited to 'drivers/pci/hotplug/shpchp_hpc.c')
| -rw-r--r-- | drivers/pci/hotplug/shpchp_hpc.c | 63 |
1 files changed, 19 insertions, 44 deletions
diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c index 5f5e8d2e355..29e22352822 100644 --- a/drivers/pci/hotplug/shpchp_hpc.c +++ b/drivers/pci/hotplug/shpchp_hpc.c @@ -113,10 +113,10 @@ #define CON_PFAULT_INTR_MASK (1 << 28) #define MRL_CHANGE_SERR_MASK (1 << 29) #define CON_PFAULT_SERR_MASK (1 << 30) -#define SLOT_REG_RSVDZ_MASK (1 << 15) | (7 << 21) +#define SLOT_REG_RSVDZ_MASK ((1 << 15) | (7 << 21)) /* - * SHPC Command Code definitnions + * SHPC Command Code definitions * * Slot Operation 00h - 3Fh * Set Bus Segment Speed/Mode A 40h - 47h @@ -179,8 +179,6 @@ #define SLOT_EVENT_LATCH 0x2 #define SLOT_SERR_INT_MASK 0x3 -static atomic_t shpchp_num_controllers = ATOMIC_INIT(0); - static irqreturn_t shpc_isr(int irq, void *dev_id); static void start_int_poll_timer(struct controller *ctrl, int sec); static int hpc_check_cmd_status(struct controller *ctrl); @@ -343,8 +341,7 @@ static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd) cmd_status = hpc_check_cmd_status(slot->ctrl); if (cmd_status) { - ctrl_err(ctrl, - "Failed to issued command 0x%x (error code = %d)\n", + ctrl_err(ctrl, "Failed to issued command 0x%x (error code = %d)\n", cmd, cmd_status); retval = -EIO; } @@ -406,7 +403,7 @@ static int hpc_get_attention_status(struct slot *slot, u8 *status) return 0; } -static int hpc_get_power_status(struct slot * slot, u8 *status) +static int hpc_get_power_status(struct slot *slot, u8 *status) { struct controller *ctrl = slot->ctrl; u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); @@ -530,7 +527,7 @@ static int hpc_get_mode1_ECC_cap(struct slot *slot, u8 *mode) return retval; } -static int hpc_query_power_fault(struct slot * slot) +static int hpc_query_power_fault(struct slot *slot) { struct controller *ctrl = slot->ctrl; u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot)); @@ -614,16 +611,9 @@ static void hpc_release_ctlr(struct controller *ctrl) iounmap(ctrl->creg); release_mem_region(ctrl->mmio_base, ctrl->mmio_size); - - /* - * If this is the last controller to be released, destroy the - * shpchpd work queue - */ - if (atomic_dec_and_test(&shpchp_num_controllers)) - destroy_workqueue(shpchp_wq); } -static int hpc_power_on_slot(struct slot * slot) +static int hpc_power_on_slot(struct slot *slot) { int retval; @@ -634,7 +624,7 @@ static int hpc_power_on_slot(struct slot * slot) return retval; } -static int hpc_slot_enable(struct slot * slot) +static int hpc_slot_enable(struct slot *slot) { int retval; @@ -647,7 +637,7 @@ static int hpc_slot_enable(struct slot * slot) return retval; } -static int hpc_slot_disable(struct slot * slot) +static int hpc_slot_disable(struct slot *slot) { int retval; @@ -729,7 +719,7 @@ static int shpc_get_cur_bus_speed(struct controller *ctrl) } -static int hpc_set_bus_speed_mode(struct slot * slot, enum pci_bus_speed value) +static int hpc_set_bus_speed_mode(struct slot *slot, enum pci_bus_speed value) { int retval; struct controller *ctrl = slot->ctrl; @@ -953,8 +943,8 @@ int shpc_init(struct controller *ctrl, struct pci_dev *pdev) ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */ ctrl_dbg(ctrl, "Hotplug Controller:\n"); - if ((pdev->vendor == PCI_VENDOR_ID_AMD) || (pdev->device == - PCI_DEVICE_ID_AMD_GOLAM_7450)) { + if (pdev->vendor == PCI_VENDOR_ID_AMD && + pdev->device == PCI_DEVICE_ID_AMD_GOLAM_7450) { /* amd shpc driver doesn't use Base Offset; assume 0 */ ctrl->mmio_base = pci_resource_start(pdev, 0); ctrl->mmio_size = pci_resource_len(pdev, 0); @@ -983,8 +973,8 @@ int shpc_init(struct controller *ctrl, struct pci_dev *pdev) for (i = 0; i < 9 + num_slots; i++) { rc = shpc_indirect_read(ctrl, i, &tempdword); if (rc) { - ctrl_err(ctrl, - "Cannot read creg (index = %d)\n", i); + ctrl_err(ctrl, "Cannot read creg (index = %d)\n", + i); goto abort; } ctrl_dbg(ctrl, " offset %d: value %x\n", i, tempdword); @@ -1069,20 +1059,17 @@ int shpc_init(struct controller *ctrl, struct pci_dev *pdev) /* Installs the interrupt handler */ rc = pci_enable_msi(pdev); if (rc) { - ctrl_info(ctrl, - "Can't get msi for the hotplug controller\n"); - ctrl_info(ctrl, - "Use INTx for the hotplug controller\n"); + ctrl_info(ctrl, "Can't get msi for the hotplug controller\n"); + ctrl_info(ctrl, "Use INTx for the hotplug controller\n"); } rc = request_irq(ctrl->pci_dev->irq, shpc_isr, IRQF_SHARED, MY_NAME, (void *)ctrl); - ctrl_dbg(ctrl, "request_irq %d for hpc%d (returns %d)\n", - ctrl->pci_dev->irq, - atomic_read(&shpchp_num_controllers), rc); + ctrl_dbg(ctrl, "request_irq %d (returns %d)\n", + ctrl->pci_dev->irq, rc); if (rc) { - ctrl_err(ctrl, "Can't get irq %d for the hotplug " - "controller\n", ctrl->pci_dev->irq); + ctrl_err(ctrl, "Can't get irq %d for the hotplug controller\n", + ctrl->pci_dev->irq); goto abort_iounmap; } } @@ -1092,18 +1079,6 @@ int shpc_init(struct controller *ctrl, struct pci_dev *pdev) shpc_get_cur_bus_speed(ctrl); /* - * If this is the first controller to be initialized, - * initialize the shpchpd work queue - */ - if (atomic_add_return(1, &shpchp_num_controllers) == 1) { - shpchp_wq = create_singlethread_workqueue("shpchpd"); - if (!shpchp_wq) { - rc = -ENOMEM; - goto abort_iounmap; - } - } - - /* * Unmask all event interrupts of all slots */ for (hp_slot = 0; hp_slot < ctrl->num_slots; hp_slot++) { |