diff options
| -rw-r--r-- | drivers/dahdi/wct4xxp/base.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/dahdi/wct4xxp/base.c b/drivers/dahdi/wct4xxp/base.c index ad7ed97..8791687 100644 --- a/drivers/dahdi/wct4xxp/base.c +++ b/drivers/dahdi/wct4xxp/base.c @@ -173,6 +173,15 @@ static inline int t4_queue_work(struct workqueue_struct *wq, struct work_struct /* #define CONFIG_FORCE_EXTENDED_RESET */ /* #define CONFIG_NOEXTENDED_RESET */ +/* + * Uncomment the following definition in order to disable Active-State Power + * Management on the PCIe bridge for PCIe cards. This has been known to work + * around issues where the BIOS enables it on the cards even though the + * platform does not support it. + * + */ +/* #define CONFIG_WCT4XXP_DISABLE_ASPM */ + #if defined(CONFIG_FORCE_EXTENDED_RESET) && defined(CONFIG_NOEXTENDED_RESET) #error "You cannot define both CONFIG_FORCE_EXTENDED_RESET and " \ "CONFIG_NOEXTENDED_RESET." @@ -378,6 +387,11 @@ struct t4 { struct spi_state st; }; +static inline bool is_pcie(const struct t4 *wc) +{ + return (wc->devtype->flags & FLAG_EXPRESS) > 0; +} + static inline bool has_e1_span(const struct t4 *wc) { return (wc->t1e1) != 0; @@ -5075,6 +5089,13 @@ t4_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) spin_lock_init(&wc->reglock); wc->devtype = (const struct devtype *)(ent->driver_data); +#ifdef CONFIG_WCT4XXP_DISABLE_ASPM + if (is_pcie(wc)) { + pci_disable_link_state(pdev->bus->self, PCIE_LINK_STATE_L0S | + PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); + }; +#endif + if (is_octal(wc)) wc->numspans = 8; else if (wc->devtype->flags & FLAG_2PORT) |