diff options
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/pm.c')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/pm.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/wil6210/pm.c b/drivers/net/wireless/ath/wil6210/pm.c index a0acb2d0cb79..2ae4fe85cc8c 100644 --- a/drivers/net/wireless/ath/wil6210/pm.c +++ b/drivers/net/wireless/ath/wil6210/pm.c @@ -71,6 +71,11 @@ int wil_suspend(struct wil6210_priv *wil, bool is_runtime) wil_dbg_pm(wil, "suspend: %s\n", is_runtime ? "runtime" : "system"); + if (test_bit(wil_status_suspended, wil->status)) { + wil_dbg_pm(wil, "trying to suspend while suspended\n"); + return 0; + } + /* if netif up, hardware is alive, shut it down */ if (ndev->flags & IFF_UP) { rc = wil_down(wil); @@ -80,12 +85,24 @@ int wil_suspend(struct wil6210_priv *wil, bool is_runtime) } } - if (wil->platform_ops.suspend) + /* Disable PCIe IRQ to prevent sporadic IRQs when PCIe is suspending */ + wil_dbg_pm(wil, "Disabling PCIe IRQ before suspending\n"); + wil_disable_irq(wil); + + if (wil->platform_ops.suspend) { rc = wil->platform_ops.suspend(wil->platform_handle); + if (rc) { + wil_enable_irq(wil); + goto out; + } + } + + set_bit(wil_status_suspended, wil->status); out: wil_dbg_pm(wil, "suspend: %s => %d\n", is_runtime ? "runtime" : "system", rc); + return rc; } @@ -104,12 +121,18 @@ int wil_resume(struct wil6210_priv *wil, bool is_runtime) } } + wil_dbg_pm(wil, "Enabling PCIe IRQ\n"); + wil_enable_irq(wil); + /* if netif up, bring hardware up * During open(), IFF_UP set after actual device method - * invocation. This prevent recursive call to wil_up() + * invocation. This prevent recursive call to wil_up(). + * wil_status_suspended will be cleared in wil_reset */ if (ndev->flags & IFF_UP) rc = wil_up(wil); + else + clear_bit(wil_status_suspended, wil->status); out: wil_dbg_pm(wil, "resume: %s => %d\n", |