linux-kernel - Re: [RFC PATCH] move drm to pci_request

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Date:	Tue, 3 Oct 2006 07:17:33 +0000
From:	Frederik Deweerdt <deweerdt@...e.fr>
To:	Dave Airlie <airlied@...il.com>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	Matthew Wilcox <matthew@....cx>, linux-scsi@...r.kernel.org,
	"Linux-Kernel," <linux-kernel@...r.kernel.org>,
	"J.A. Magall??n" <jamagallon@....com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Andrew Morton <akpm@...l.org>, Jeff Garzik <jeff@...zik.org>
Subject: Re: [RFC PATCH] move drm to pci_request_irq

On Tue, Oct 03, 2006 at 09:54:07AM +1000, Dave Airlie wrote:
> On 10/3/06, Frederik Deweerdt <deweerdt@...e.fr> wrote:
> >Hi,
> >
> >This proof-of-concept patch converts the drm driver to use the
> >pci_request_irq() function.
> 
> NAK.
> Wow nice CC'list and no DRM maintainer in sight :-)
:), this was just meant as an illustration of the needed modifications
to use pci_request_irq.
> 
> This will break framebuffer drivers, the DRM is not a proper PCI
> device driver as we don't have PCI device sharing, take a look at the
> gpu-2.6.git tree on kernel.org for the "correct" solution, which needs
> more attention before merging..
I'll look, thanks,
Frederik
> 
> Dave.
> >
> >Regards,
> >Frederik
> >
> >
> >
> >diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c
> >index b366c5b..5b000cd 100644
> >--- a/drivers/char/drm/drm_drv.c
> >+++ b/drivers/char/drm/drm_drv.c
> >@@ -234,6 +234,8 @@ int drm_lastclose(drm_device_t * dev)
> >        }
> >        mutex_unlock(&dev->struct_mutex);
> >
> >+       pci_set_drvdata(dev, NULL);
> >+
> >        DRM_DEBUG("lastclose completed\n");
> >        return 0;
> > }
> >diff --git a/drivers/char/drm/drm_irq.c b/drivers/char/drm/drm_irq.c
> >index 4553a3a..5dd12cb 100644
> >--- a/drivers/char/drm/drm_irq.c
> >+++ b/drivers/char/drm/drm_irq.c
> >@@ -132,8 +132,10 @@ static int drm_irq_install(drm_device_t
> >        if (drm_core_check_feature(dev, DRIVER_IRQ_SHARED))
> >                sh_flags = IRQF_SHARED;
> >
> >-       ret = request_irq(dev->irq, dev->driver->irq_handler,
> >-                         sh_flags, dev->devname, dev);
> >+       pci_set_drvdata(dev->pdev, dev);
> >+
> >+       ret = pci_request_irq(dev->pdev, dev->driver->irq_handler,
> >+                         sh_flags, dev->devname);
> >        if (ret < 0) {
> >                mutex_lock(&dev->struct_mutex);
> >                dev->irq_enabled = 0;
> >@@ -173,7 +175,7 @@ int drm_irq_uninstall(drm_device_t * dev
> >
> >        dev->driver->irq_uninstall(dev);
> >
> >-       free_irq(dev->irq, dev);
> >+       pci_free_irq(dev->pdev);
> >
> >        return 0;
> > }
> >-
> >To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> >Please read the FAQ at  http://www.tux.org/lkml/
> >
> 
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