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ioc4: use static work_struct for ioc4_load_modules() 

There is no reason to dynamically allocate work_struct for
ioc4_load_modules().  It makes the code more complex and makes it
impossible to flush the work directly.  Use static work
ioc4_load_modules_work instead and flush it directly on exit.

This removes the use of flush_scheduled_work() which is being
deprecated.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Brent Casavant <bcasavan@sgi.com>
This commit is contained in:
Tejun Heo 2010-12-24 16:14:20 +01:00
parent ee4569a3a7
commit 883624a08c
1 changed files with 9 additions and 20 deletions
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25
drivers/misc/ioc4.c
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@ -273,13 +273,11 @@ ioc4_variant(struct ioc4_driver_data *idd)
static void __devinit static void __devinit
ioc4_load_modules(struct work_struct *work) ioc4_load_modules(struct work_struct *work)
{ {
/* arg just has to be freed */
request_module("sgiioc4"); request_module("sgiioc4");
kfree(work);
} }
static DECLARE_WORK(ioc4_load_modules_work, ioc4_load_modules);
/* Adds a new instance of an IOC4 card */ /* Adds a new instance of an IOC4 card */
static int __devinit static int __devinit
ioc4_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id) ioc4_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
@ -396,21 +394,12 @@ ioc4_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
* PCI device. * PCI device.
*/ */
if (idd->idd_variant != IOC4_VARIANT_PCI_RT) { if (idd->idd_variant != IOC4_VARIANT_PCI_RT) {
struct work_struct *work; /* Request the module from a work procedure as the modprobe
work = kzalloc(sizeof(struct work_struct), GFP_KERNEL); * goes out to a userland helper and that will hang if done
if (!work) { * directly from ioc4_probe().
printk(KERN_WARNING
"%s: IOC4 unable to allocate memory for "
"load of sub-modules.\n", __func__);
} else {
/* Request the module from a work procedure as the
* modprobe goes out to a userland helper and that
* will hang if done directly from ioc4_probe().
*/ */
printk(KERN_INFO "IOC4 loading sgiioc4 submodule\n"); printk(KERN_INFO "IOC4 loading sgiioc4 submodule\n");
INIT_WORK(work, ioc4_load_modules); schedule_work(&ioc4_load_modules_work);
schedule_work(work);
}
} }
return 0; return 0;
@ -498,7 +487,7 @@ static void __exit
ioc4_exit(void) ioc4_exit(void)
{ {
/* Ensure ioc4_load_modules() has completed before exiting */ /* Ensure ioc4_load_modules() has completed before exiting */
flush_scheduled_work(); flush_work_sync(&ioc4_load_modules_work);
pci_unregister_driver(&ioc4_driver); pci_unregister_driver(&ioc4_driver);
} }