Re: [PATCH v1] serial: qcom-geni: Fix port_ida handling for console and probe errors

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 8/28/26 1:14 PM, Aniket Randive wrote:
> The console port uses a fixed line number and is not allocated from
> port_ida. However, qcom_geni_serial_remove() unconditionally frees the
> line number for all ports, including the console port.
> 
> Skip ida_free() for console ports so that only IDs allocated from
> port_ida are returned.
> 
> Also release allocated IDs from the common probe error path. Currently,
> IDs are freed only on the wake-IRQ failure path, causing leaks when
> probe fails after a successful allocation. Move the ida_free() call to
> the common error path and guard it for console ports.
> 
> Signed-off-by: Aniket Randive <aniket.randive@oss.qualcomm.com>
> ---
>  drivers/tty/serial/qcom_geni_serial.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
> index 3633723acef8..3bfe597d2c83 100644
> --- a/drivers/tty/serial/qcom_geni_serial.c
> +++ b/drivers/tty/serial/qcom_geni_serial.c
> @@ -1979,7 +1979,6 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
>  						port->wakeup_irq);
>  		if (ret) {
>  			device_init_wakeup(&pdev->dev, false);
> -			ida_free(&port_ida, uport->line);
>  			goto error;
>  		}
>  	}

GPT suggested that the failure of

ret = port->dev_data->resources_init(&port->se);

should also be updated to have a 'goto error' rather than a direct
return


also that in get_port_from_line(), reordering the devm_kzalloc before
ida_alloc_range() would prevent another leak

Konrad