pciehp: update workqueue usage
* Rename pciehp_wq to pciehp_ordered_wq and add non-ordered pciehp_wq
which is used instead of the system workqueue. This is to remove
the use of flush_scheduled_work() which is deprecated and scheduled
for removal.
* With cmwq in place, there's no point in creating workqueues lazily.
Create both pciehp_wq and pciehp_ordered_wq upfront.
* Include workqueue.h from pciehp.h.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 0cd4204..50a23da 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -41,8 +41,6 @@
#include "../pci.h"
#include "pciehp.h"
-static atomic_t pciehp_num_controllers = ATOMIC_INIT(0);
-
static inline int pciehp_readw(struct controller *ctrl, int reg, u16 *value)
{
struct pci_dev *dev = ctrl->pcie->port;
@@ -805,8 +803,8 @@
{
struct slot *slot = ctrl->slot;
cancel_delayed_work(&slot->work);
- flush_scheduled_work();
flush_workqueue(pciehp_wq);
+ flush_workqueue(pciehp_ordered_wq);
kfree(slot);
}
@@ -912,16 +910,6 @@
/* Disable sotfware notification */
pcie_disable_notification(ctrl);
- /*
- * If this is the first controller to be initialized,
- * initialize the pciehp work queue
- */
- if (atomic_add_return(1, &pciehp_num_controllers) == 1) {
- pciehp_wq = create_singlethread_workqueue("pciehpd");
- if (!pciehp_wq)
- goto abort_ctrl;
- }
-
ctrl_info(ctrl, "HPC vendor_id %x device_id %x ss_vid %x ss_did %x\n",
pdev->vendor, pdev->device, pdev->subsystem_vendor,
pdev->subsystem_device);
@@ -941,11 +929,5 @@
{
pcie_shutdown_notification(ctrl);
pcie_cleanup_slot(ctrl);
- /*
- * If this is the last controller to be released, destroy the
- * pciehp work queue
- */
- if (atomic_dec_and_test(&pciehp_num_controllers))
- destroy_workqueue(pciehp_wq);
kfree(ctrl);
}