Hi,
On 11-09-18 08:48, Nicholas Mc Guire wrote:
On Mon, Sep 10, 2018 at 08:30:38PM +0200, Hans de Goede wrote:
Commit 1daddbc8dec5 ("staging: vboxvideo: Update driver to use
drm_dev_register.") replaced the obsolere drm_get_pci_dev() with
normal pci probe and remove functions.
But the new vbox_pci_probe() is missing a pci_enable_device() call,
causing interrupts to not be delivered. This causes resizes of the
vm window to not get seen by the drm/kms code.
This commit adds the missing pci_enable_device() call, fixing this.
pci_enable_device is the wrapper to pci_enable_device_flags() the later
return < 0 on error - so while the check for if(ret) will do the right
think here I think it would be prefereable to explicidly use if (ret < 0)
as all error values pci_enable_device_flags() returns are negative.
The use of "if (ret)" checks for functions which return 0 on success
negative value on error is a standard pattern in the kernel, so I would
prefer to keep this as is.
Fixes: 1daddbc8dec5 ("staging: vboxvideo: Update driver to use ...")
Cc: Fabio Rafael da Rosa <fdr@xxxxxxxxx>
Cc: Nicholas Mc Guire <der.herr@xxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Reviewed-by: Nicholas Mc Guire <der.herr@xxxxxxx>
Thanks.
Regards,
Hans
---
drivers/staging/vboxvideo/vbox_drv.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/staging/vboxvideo/vbox_drv.c b/drivers/staging/vboxvideo/vbox_drv.c
index da92c493f157..69cc508af1bc 100644
--- a/drivers/staging/vboxvideo/vbox_drv.c
+++ b/drivers/staging/vboxvideo/vbox_drv.c
@@ -59,6 +59,11 @@ static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
ret = PTR_ERR(dev);
goto err_drv_alloc;
}
+
+ ret = pci_enable_device(pdev);
+ if (ret)
+ goto err_pci_enable;
+
dev->pdev = pdev;
pci_set_drvdata(pdev, dev);
@@ -75,6 +80,8 @@ static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
err_drv_dev_register:
vbox_driver_unload(dev);
err_vbox_driver_load:
+ pci_disable_device(pdev);
+ err_pci_enable:
drm_dev_put(dev);
err_drv_alloc:
return ret;
--
2.19.0.rc0
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