From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> mainline inclusion from mainline-v5.15-rc1 commit ed623dffdeebcc0acac7be6af4a301ee7169cd21 category: bugfix bugzilla: 187303, https://gitee.com/openeuler/kernel/issues/I5ZXV2 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... ------------------------------- In case the uart registration fails the clocks are left enabled. Disable the clock in case of errors. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> Link: https://lore.kernel.org/r/20210713064835.27978-2-shubhrajyoti.datta@xilinx.c... Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Cai Xinchen <caixinchen1@huawei.com> Reviewed-by: GONG Ruiqi <gongruiqi1@huawei.com> Reviewed-by: Wang Weiyang <wangweiyang2@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/tty/serial/uartlite.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c index 48923cd8c07d..dadac5cc3d5d 100644 --- a/drivers/tty/serial/uartlite.c +++ b/drivers/tty/serial/uartlite.c @@ -784,6 +784,7 @@ static int ulite_probe(struct platform_device *pdev) ret = uart_register_driver(&ulite_uart_driver); if (ret < 0) { dev_err(&pdev->dev, "Failed to register driver\n"); + clk_disable_unprepare(pdata->clk); return ret; } } -- 2.20.1