diff options
| author | Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> | 2009-09-15 08:29:49 (GMT) |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-09-17 17:06:18 (GMT) |
| commit | 6aaa6d06f57f3689afe27c1fad256c5d6aa9b271 (patch) | |
| tree | 37046e6aa57d03d9b5a890dc9bde34afe1b2f48e /drivers/pci/hotplug/pciehp_ctrl.c | |
| parent | 5f9cab7af6f7ef1e3cbb25217617eb5bd082aa7b (diff) | |
| download | linux-6aaa6d06f57f3689afe27c1fad256c5d6aa9b271.tar.xz | |
PCI: pciehp: remove crit_sect mutex
The crit_sect mutex defined in struct controller is to serialize
hot-plug operations against multiple slots under the same bus. But,
since PCIe doesnstream port has only one slot at most, it is
meaningless and we don't need it.
Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/hotplug/pciehp_ctrl.c')
| -rw-r--r-- | drivers/pci/hotplug/pciehp_ctrl.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c index beb0817..b3c9ae5 100644 --- a/drivers/pci/hotplug/pciehp_ctrl.c +++ b/drivers/pci/hotplug/pciehp_ctrl.c @@ -519,13 +519,9 @@ int pciehp_enable_slot(struct slot *p_slot) int rc; struct controller *ctrl = p_slot->ctrl; - /* Check to see if (latch closed, card present, power off) */ - mutex_lock(&p_slot->ctrl->crit_sect); - rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); if (rc || !getstatus) { ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); - mutex_unlock(&p_slot->ctrl->crit_sect); return -ENODEV; } if (MRL_SENS(p_slot->ctrl)) { @@ -533,7 +529,6 @@ int pciehp_enable_slot(struct slot *p_slot) if (rc || getstatus) { ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); - mutex_unlock(&p_slot->ctrl->crit_sect); return -ENODEV; } } @@ -543,7 +538,6 @@ int pciehp_enable_slot(struct slot *p_slot) if (rc || getstatus) { ctrl_info(ctrl, "Already enabled on slot(%s)\n", slot_name(p_slot)); - mutex_unlock(&p_slot->ctrl->crit_sect); return -EINVAL; } } @@ -557,7 +551,6 @@ int pciehp_enable_slot(struct slot *p_slot) update_slot_info(p_slot); - mutex_unlock(&p_slot->ctrl->crit_sect); return rc; } @@ -571,15 +564,11 @@ int pciehp_disable_slot(struct slot *p_slot) if (!p_slot->ctrl) return 1; - /* Check to see if (latch closed, card present, power on) */ - mutex_lock(&p_slot->ctrl->crit_sect); - if (!HP_SUPR_RM(p_slot->ctrl)) { ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); if (ret || !getstatus) { ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); - mutex_unlock(&p_slot->ctrl->crit_sect); return -ENODEV; } } @@ -589,7 +578,6 @@ int pciehp_disable_slot(struct slot *p_slot) if (ret || getstatus) { ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); - mutex_unlock(&p_slot->ctrl->crit_sect); return -ENODEV; } } @@ -599,7 +587,6 @@ int pciehp_disable_slot(struct slot *p_slot) if (ret || !getstatus) { ctrl_info(ctrl, "Already disabled on slot(%s)\n", slot_name(p_slot)); - mutex_unlock(&p_slot->ctrl->crit_sect); return -EINVAL; } } @@ -607,7 +594,6 @@ int pciehp_disable_slot(struct slot *p_slot) ret = remove_board(p_slot); update_slot_info(p_slot); - mutex_unlock(&p_slot->ctrl->crit_sect); return ret; } |