diff options
| author | Zhang Qilong <zhangqilong3@huawei.com> | 2020-11-19 22:11:26 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-26 21:19:58 +0100 |
| commit | 6e4e636e0e3e0b5deffc5e233adcb2cd4e68f2d0 (patch) | |
| tree | e1f630d09f7acb2157f2c41285aa8cddf0b7c333 /drivers/tty/serial/8250 | |
| parent | 3b3e23092449a57f4ba57cd60506ab14055b1642 (diff) | |
| download | linux-6e4e636e0e3e0b5deffc5e233adcb2cd4e68f2d0.tar.gz | |
serial: 8250-mtk: Fix reference leak in mtk8250_probe
The pm_runtime_enable will increase power disable depth.
Thus a pairing decrement is needed on the error handling
path to keep it balanced according to context.
Fixes: e32a83c70cf98 ("serial: 8250-mtk: modify mtk uart power and clock management")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201119141126.168850-1-zhangqilong3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/8250')
| -rw-r--r-- | drivers/tty/serial/8250/8250_mtk.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c index fa876e2c13e5..f7d3023f860f 100644 --- a/drivers/tty/serial/8250/8250_mtk.c +++ b/drivers/tty/serial/8250/8250_mtk.c @@ -572,15 +572,22 @@ static int mtk8250_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); err = mtk8250_runtime_resume(&pdev->dev); if (err) - return err; + goto err_pm_disable; data->line = serial8250_register_8250_port(&uart); - if (data->line < 0) - return data->line; + if (data->line < 0) { + err = data->line; + goto err_pm_disable; + } data->rx_wakeup_irq = platform_get_irq_optional(pdev, 1); return 0; + +err_pm_disable: + pm_runtime_disable(&pdev->dev); + + return err; } static int mtk8250_remove(struct platform_device *pdev) |