redonkable/remarkable-linux
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video: backlight/progear, fix pci device refcounting

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Stanse found an ommitted pci_dev_puts on error path in progearbl_probe.
pmu_dev and sb_dev are gotten, but never put when
backlight_device_register fails.

So unify fail paths and put the devs when the failure occurs.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Jiri Slaby 2010-02-02 14:44:50 -08:00 committed by Richard Purdie
parent c3cf2e44d3
commit a4ebb780e1
1 changed files with 12 additions and 4 deletions
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16
drivers/video/backlight/progear_bl.c
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@ -63,6 +63,7 @@ static int progearbl_probe(struct platform_device *pdev)
{
u8 temp;
struct backlight_device *progear_backlight_device;
int ret;
pmu_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, NULL);
if (!pmu_dev) {
@ -73,8 +74,8 @@ static int progearbl_probe(struct platform_device *pdev)
sb_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
if (!sb_dev) {
printk("ALI 1533 SB not found.\n");
pci_dev_put(pmu_dev);
return -ENODEV;
ret = -ENODEV;
goto put_pmu;
}
/* Set SB_MPS1 to enable brightness control. */
@ -84,8 +85,10 @@ static int progearbl_probe(struct platform_device *pdev)
progear_backlight_device = backlight_device_register("progear-bl",
&pdev->dev, NULL,
&progearbl_ops);
if (IS_ERR(progear_backlight_device))
return PTR_ERR(progear_backlight_device);
if (IS_ERR(progear_backlight_device)) {
ret = PTR_ERR(progear_backlight_device);
goto put_sb;
}
platform_set_drvdata(pdev, progear_backlight_device);
@ -95,6 +98,11 @@ static int progearbl_probe(struct platform_device *pdev)
progearbl_set_intensity(progear_backlight_device);
return 0;
put_sb:
pci_dev_put(sb_dev);
put_pmu:
pci_dev_put(pmu_dev);
return ret;
}
static int progearbl_remove(struct platform_device *pdev)