diff options
Diffstat (limited to 'drivers/pci/pcie')
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 21 | ||||
| -rw-r--r-- | drivers/pci/pcie/dpc.c | 5 |
2 files changed, 16 insertions, 10 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 25736d408..cf4acea66 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -743,10 +743,10 @@ static void pcie_config_aspm_l1ss(struct pcie_link_state *link, u32 state) * in pcie_config_aspm_link(). */ if (enable_req & (ASPM_STATE_L1_1 | ASPM_STATE_L1_2)) { - pcie_capability_clear_and_set_word(child, PCI_EXP_LNKCTL, - PCI_EXP_LNKCTL_ASPM_L1, 0); - pcie_capability_clear_and_set_word(parent, PCI_EXP_LNKCTL, - PCI_EXP_LNKCTL_ASPM_L1, 0); + pcie_capability_clear_word(child, PCI_EXP_LNKCTL, + PCI_EXP_LNKCTL_ASPM_L1); + pcie_capability_clear_word(parent, PCI_EXP_LNKCTL, + PCI_EXP_LNKCTL_ASPM_L1); } val = 0; @@ -1055,8 +1055,11 @@ void pcie_aspm_exit_link_state(struct pci_dev *pdev) up_read(&pci_bus_sem); } -/* @pdev: the root port or switch downstream port */ -void pcie_aspm_pm_state_change(struct pci_dev *pdev) +/* + * @pdev: the root port or switch downstream port + * @locked: whether pci_bus_sem is held + */ +void pcie_aspm_pm_state_change(struct pci_dev *pdev, bool locked) { struct pcie_link_state *link = pdev->link_state; @@ -1066,12 +1069,14 @@ void pcie_aspm_pm_state_change(struct pci_dev *pdev) * Devices changed PM state, we should recheck if latency * meets all functions' requirement */ - down_read(&pci_bus_sem); + if (!locked) + down_read(&pci_bus_sem); mutex_lock(&aspm_lock); pcie_update_aspm_capable(link->root); pcie_config_aspm_path(link); mutex_unlock(&aspm_lock); - up_read(&pci_bus_sem); + if (!locked) + up_read(&pci_bus_sem); } void pcie_aspm_powersave_config_link(struct pci_dev *pdev) diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c index 088002828..acdbf9e77 100644 --- a/drivers/pci/pcie/dpc.c +++ b/drivers/pci/pcie/dpc.c @@ -9,6 +9,7 @@ #define dev_fmt(fmt) "DPC: " fmt #include <linux/aer.h> +#include <linux/bitfield.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/init.h> @@ -203,7 +204,7 @@ static void dpc_process_rp_pio_error(struct pci_dev *pdev) /* Get First Error Pointer */ pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &dpc_status); - first_error = (dpc_status & 0x1f00) >> 8; + first_error = FIELD_GET(PCI_EXP_DPC_RP_PIO_FEP, dpc_status); for (i = 0; i < ARRAY_SIZE(rp_pio_error_string); i++) { if ((status & ~mask) & (1 << i)) @@ -339,7 +340,7 @@ void pci_dpc_init(struct pci_dev *pdev) /* Quirks may set dpc_rp_log_size if device or firmware is buggy */ if (!pdev->dpc_rp_log_size) { pdev->dpc_rp_log_size = - (cap & PCI_EXP_DPC_RP_PIO_LOG_SIZE) >> 8; + FIELD_GET(PCI_EXP_DPC_RP_PIO_LOG_SIZE, cap); if (pdev->dpc_rp_log_size < 4 || pdev->dpc_rp_log_size > 9) { pci_err(pdev, "RP PIO log size %u is invalid\n", pdev->dpc_rp_log_size); |