> -----Original Message----- > From: Maarten Lankhorst [mailto:m.b.lankhorst@xxxxxxxxx] > Sent: Thursday, July 07, 2011 2:32 PM > To: Winkler, Tomas > Cc: devel@xxxxxxxxxxxxxxxxxxxxxx; Linux Kernel Mailing List > Subject: [staging] mei: Enable msi when supported > > Signed-off-by: Maarten Lankhorst <m.b.lankhorst@xxxxxxxxx> > --- > Tested suspend/resume, driver (re/un)loading. Comments welcome. :) Sounds good, but I believe in case where MSI is enabled we also can kill the quick handler. Let me check before I ack this. > > diff --git a/drivers/staging/mei/main.c b/drivers/staging/mei/main.c index > bfd1b46..58106bf 100644 > --- a/drivers/staging/mei/main.c > +++ b/drivers/staging/mei/main.c > @@ -121,6 +121,7 @@ static int __devinit mei_probe(struct pci_dev *pdev, > { > struct mei_device *dev; > int err; > + unsigned long flags = 0; > > mutex_lock(&mei_mutex); > if (mei_device) { > @@ -154,11 +155,13 @@ static int __devinit mei_probe(struct pci_dev > *pdev, > err = -ENOMEM; > goto free_device; > } > + if (pci_enable_msi(pdev) < 0) > + flags |= IRQF_SHARED; > /* request and enable interrupt */ > err = request_threaded_irq(pdev->irq, > mei_interrupt_quick_handler, > mei_interrupt_thread_handler, > - IRQF_SHARED, mei_driver_name, dev); > + flags, mei_driver_name, dev); > if (err) { > printk(KERN_ERR "mei: request_threaded_irq failure. irq = > %d\n", > pdev->irq); > @@ -186,6 +189,7 @@ release_irq: > mei_disable_interrupts(dev); > flush_scheduled_work(); > free_irq(pdev->irq, dev); > + pci_disable_msi(pdev); > unmap_memory: > pci_iounmap(pdev, dev->mem_addr); > free_device: > @@ -250,6 +254,7 @@ static void __devexit mei_remove(struct pci_dev > *pdev) > mei_disable_interrupts(dev); > > free_irq(pdev->irq, dev); > + pci_disable_msi(pdev); > pci_set_drvdata(pdev, NULL); > > if (dev->mem_addr) > @@ -1103,7 +1108,7 @@ static int mei_pci_suspend(struct device *device) > mutex_unlock(&dev->device_lock); > > free_irq(pdev->irq, dev); > - > + pci_disable_msi(pdev); > > return err; > } > @@ -1113,16 +1118,19 @@ static int mei_pci_resume(struct device *device) > struct pci_dev *pdev = to_pci_dev(device); > struct mei_device *dev; > int err; > + unsigned long flags = 0; > > dev = pci_get_drvdata(pdev); > if (!dev) > return -ENODEV; > > + if (pci_enable_msi(pdev) < 0) > + flags |= IRQF_SHARED; > /* request and enable interrupt */ > err = request_threaded_irq(pdev->irq, > mei_interrupt_quick_handler, > mei_interrupt_thread_handler, > - IRQF_SHARED, mei_driver_name, dev); > + flags, mei_driver_name, dev); > if (err) { > printk(KERN_ERR "mei: Request_irq failure. irq = %d\n", > pdev->irq); > --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
