[PATCH 1/2] staging: sm750fb: fixing function return with lock held

Prasant Jalan
2017-03-31T19:13:54Z

lynxfb_suspend() & lynxfb_resume() return on errors while holding
console_lock.

Adding 'goto' such that proper cleanups can be done before returning
from function and therefore console_lock can be released before
returning.

Signed-off-by: Prasant Jalan <prasant.jalan@gmail.com>
---
drivers/staging/sm750fb/sm750.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c
index c618c56..445c68d 100644
--- a/drivers/staging/sm750fb/sm750.c
+++ b/drivers/staging/sm750fb/sm750.c
@@ -419,7 +419,7 @@ static int lynxfb_suspend(struct pci_dev *pdev, pm_message_t mesg)
if (ret) {
dev_err(&pdev->dev,
"error:%d occurred in pci_save_state\n", ret);
- return ret;
+ goto lynxfb_suspend_err;
}

ret = pci_set_power_state(pdev, pci_choose_state(pdev, mesg));
@@ -427,11 +427,13 @@ static int lynxfb_suspend(struct pci_dev *pdev, pm_message_t mesg)
dev_err(&pdev->dev,
"error:%d occurred in pci_set_power_state\n",
ret);
- return ret;
+ goto lynxfb_suspend_err;
}
}

pdev->dev.power.power_state = mesg;
+
+lynxfb_suspend_err:
console_unlock();
return ret;
}
@@ -456,7 +458,7 @@ static int lynxfb_resume(struct pci_dev *pdev)
if (ret) {
dev_err(&pdev->dev,
"error:%d occurred in pci_set_power_state\n", ret);
- return ret;
+ goto lynxfb_resume_err;
}

if (pdev->dev.power.power_state.event != PM_EVENT_FREEZE) {
@@ -466,7 +468,7 @@ static int lynxfb_resume(struct pci_dev *pdev)
dev_err(&pdev->dev,
"error:%d occurred in pci_enable_device\n",
ret);
- return ret;
+ goto lynxfb_resume_err;
}
pci_set_master(pdev);
}
@@ -498,6 +500,8 @@ static int lynxfb_resume(struct pci_dev *pdev)
}

pdev->dev.power.power_state.event = PM_EVENT_RESUME;
+
+lynxfb_resume_err:
console_unlock();
return ret;
}
--
2.7.4