diff options
| author | Jiri Slaby <jirislaby@gmail.com> | 2007-05-23 13:57:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-23 20:14:14 -0700 |
| commit | c8511f94908a92337b80f0c12342b9051232054f (patch) | |
| tree | e877d0bd7b6b3c786dc8593b2bc7939b85723676 /drivers/misc/phantom.c | |
| parent | c15395c0dbdd646ca80945a7578c8c6cd44ce942 (diff) | |
Misc: phantom, take care of pci posting
phantom, take care of pci posting
thanks to akpm for pointing this out
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/phantom.c')
| -rw-r--r-- | drivers/misc/phantom.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c index 4b5959b2c93..5108b7c576d 100644 --- a/drivers/misc/phantom.c +++ b/drivers/misc/phantom.c @@ -60,8 +60,11 @@ static int phantom_status(struct phantom_device *dev, unsigned long newstat) atomic_set(&dev->counter, 0); iowrite32(PHN_CTL_IRQ, dev->iaddr + PHN_CONTROL); iowrite32(0x43, dev->caddr + PHN_IRQCTL); - } else if ((dev->status & PHB_RUNNING) && !(newstat & PHB_RUNNING)) + ioread32(dev->caddr + PHN_IRQCTL); /* PCI posting */ + } else if ((dev->status & PHB_RUNNING) && !(newstat & PHB_RUNNING)) { iowrite32(0, dev->caddr + PHN_IRQCTL); + ioread32(dev->caddr + PHN_IRQCTL); /* PCI posting */ + } dev->status = newstat; @@ -102,6 +105,7 @@ static long phantom_ioctl(struct file *file, unsigned int cmd, pr_debug("phantom: writing %x to %u\n", r.value, r.reg); iowrite32(r.value, dev->iaddr + r.reg); + ioread32(dev->iaddr); /* PCI posting */ if (r.reg == PHN_CONTROL && !(r.value & PHN_CTL_IRQ)) phantom_status(dev, dev->status & ~PHB_RUNNING); @@ -116,6 +120,7 @@ static long phantom_ioctl(struct file *file, unsigned int cmd, for (i = 0; i < min(rs.count, 8U); i++) if ((1 << i) & rs.mask) iowrite32(rs.values[i], dev->oaddr + i); + ioread32(dev->iaddr); /* PCI posting */ spin_unlock(&dev->ioctl_lock); break; case PHN_GET_REG: @@ -221,6 +226,7 @@ static irqreturn_t phantom_isr(int irq, void *data) iowrite32(0, dev->iaddr); iowrite32(0xc0, dev->iaddr); + ioread32(dev->iaddr); /* PCI posting */ atomic_inc(&dev->counter); wake_up_interruptible(&dev->wait); @@ -297,6 +303,7 @@ static int __devinit phantom_probe(struct pci_dev *pdev, pht->cdev.owner = THIS_MODULE; iowrite32(0, pht->caddr + PHN_IRQCTL); + ioread32(pht->caddr + PHN_IRQCTL); /* PCI posting */ retval = request_irq(pdev->irq, phantom_isr, IRQF_SHARED | IRQF_DISABLED, "phantom", pht); if (retval) { @@ -347,6 +354,7 @@ static void __devexit phantom_remove(struct pci_dev *pdev) cdev_del(&pht->cdev); iowrite32(0, pht->caddr + PHN_IRQCTL); + ioread32(pht->caddr + PHN_IRQCTL); /* PCI posting */ free_irq(pdev->irq, pht); pci_iounmap(pdev, pht->oaddr); @@ -368,6 +376,7 @@ static int phantom_suspend(struct pci_dev *pdev, pm_message_t state) struct phantom_device *dev = pci_get_drvdata(pdev); iowrite32(0, dev->caddr + PHN_IRQCTL); + ioread32(dev->caddr + PHN_IRQCTL); /* PCI posting */ return 0; } |