The probe() cleanup code ('goto foo_error') was very messy. It appears that this code wasn't updated when I switched to the devm_ functions in an earlier version.
Update the code to use 'return error' where it can and do proper cleanup where it needs to.
Note that the original code wasn't buggy, it was just messy.
Signed-off-by: Hans Verkuil hans.verkuil@cisco.com --- Since I already posted the pull request for this driver and since this is just a cleanup I decided to do this as a separate patch on top of the pull request code rather than merging this in the pull request. --- drivers/media/platform/tegra-cec/tegra_cec.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-)
diff --git a/drivers/media/platform/tegra-cec/tegra_cec.c b/drivers/media/platform/tegra-cec/tegra_cec.c index b53743f555e8..807c94c70049 100644 --- a/drivers/media/platform/tegra-cec/tegra_cec.c +++ b/drivers/media/platform/tegra-cec/tegra_cec.c @@ -356,40 +356,34 @@ static int tegra_cec_probe(struct platform_device *pdev) if (!res) { dev_err(&pdev->dev, "Unable to allocate resources for device\n"); - ret = -EBUSY; - goto cec_error; + return -EBUSY; }
if (!devm_request_mem_region(&pdev->dev, res->start, resource_size(res), pdev->name)) { dev_err(&pdev->dev, "Unable to request mem region for device\n"); - ret = -EBUSY; - goto cec_error; + return -EBUSY; }
cec->tegra_cec_irq = platform_get_irq(pdev, 0);
- if (cec->tegra_cec_irq <= 0) { - ret = -EBUSY; - goto cec_error; - } + if (cec->tegra_cec_irq <= 0) + return -EBUSY;
cec->cec_base = devm_ioremap_nocache(&pdev->dev, res->start, - resource_size(res)); + resource_size(res));
if (!cec->cec_base) { dev_err(&pdev->dev, "Unable to grab IOs for device\n"); - ret = -EBUSY; - goto cec_error; + return -EBUSY; }
cec->clk = devm_clk_get(&pdev->dev, "cec");
if (IS_ERR_OR_NULL(cec->clk)) { dev_err(&pdev->dev, "Can't get clock for CEC\n"); - ret = -ENOENT; - goto clk_error; + return -ENOENT; }
clk_prepare_enable(cec->clk); @@ -406,13 +400,13 @@ static int tegra_cec_probe(struct platform_device *pdev) if (ret) { dev_err(&pdev->dev, "Unable to request interrupt for device\n"); - goto cec_error; + goto clk_error; }
cec->notifier = cec_notifier_get(&hdmi_dev->dev); if (!cec->notifier) { ret = -ENOMEM; - goto cec_error; + goto clk_error; }
cec->adap = cec_allocate_adapter(&tegra_cec_ops, cec, TEGRA_CEC_NAME, @@ -437,8 +431,8 @@ static int tegra_cec_probe(struct platform_device *pdev) if (cec->notifier) cec_notifier_put(cec->notifier); cec_delete_adapter(cec->adap); - clk_disable_unprepare(cec->clk); clk_error: + clk_disable_unprepare(cec->clk); return ret; }