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staging: sm7xxfb: reserve PCI resource 

before starting to access any address inside the PCI region we should
reserve the resource and release the resource when the module exits.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sudip Mukherjee 2015-03-28 14:33:40 +05:30 committed by Greg Kroah-Hartman
parent 63b8ebe44a
commit f30a746bec
1 changed files with 10 additions and 0 deletions
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10
drivers/staging/sm7xxfb/sm7xxfb.c
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@ -776,6 +776,12 @@ static int smtcfb_pci_probe(struct pci_dev *pdev,
if (err)
return err;
err = pci_request_region(pdev, 0, "sm7xxfb");
if (err < 0) {
dev_err(&pdev->dev, "cannot reserve framebuffer region\n");
goto failed_regions;
}
sprintf(smtcfb_fix.id, "sm%Xfb", ent->device);
sfb = smtc_alloc_fb_info(pdev);
@ -905,6 +911,9 @@ failed_fb:
smtc_free_fb_info(sfb);
failed_free:
pci_release_region(pdev, 0);
failed_regions:
pci_disable_device(pdev);
return err;
@ -933,6 +942,7 @@ static void smtcfb_pci_remove(struct pci_dev *pdev)
smtc_unmap_mmio(sfb);
unregister_framebuffer(&sfb->fb);
smtc_free_fb_info(sfb);
pci_release_region(pdev, 0);
}
#ifdef CONFIG_PM