serial: qcom-geni: Avoid probing debug console UART without console support

When CONFIG_SERIAL_QCOM_GENI_CONSOLE is disabled, the driver still
advertises the debug UART compatible strings ("qcom,geni-debug-uart"
and "qcom,sa8255p-geni-debug-uart") in its of_match table. This lets the
driver match and probe console UART DT nodes even though console
support is not built. As a result, the console port is never registered
with the UART core and uart_add_one_port() fails with -EINVAL.

Fix this by only including the debug UART compatible entries in the
match table when CONFIG_SERIAL_QCOM_GENI_CONSOLE is enabled, preventing
the driver from probing console UART nodes when console support is
absent.

Reviewed-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
Signed-off-by: Aniket Randive <aniket.randive@oss.qualcomm.com>
Link: https://patch.msgid.link/20260504101045.1084672-1-aniket.randive@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index b365dd5da3cb799c4ec241724310c23d6bf7e16a..58d142afa160ab16c60b79c5f132f39d1471c7cd 100644 (file)
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -1992,6 +1992,7 @@ static int qcom_geni_serial_resume(struct device *dev)
        return ret;
 }
 
+#if IS_ENABLED(CONFIG_SERIAL_QCOM_GENI_CONSOLE)
 static const struct qcom_geni_device_data qcom_geni_console_data = {
        .console = true,
        .mode = GENI_SE_FIFO,
@@ -2000,14 +2001,6 @@ static const struct qcom_geni_device_data qcom_geni_console_data = {
        .power_state = geni_serial_resource_state,
 };
 
-static const struct qcom_geni_device_data qcom_geni_uart_data = {
-       .console = false,
-       .mode = GENI_SE_DMA,
-       .resources_init = geni_serial_resource_init,
-       .set_rate = geni_serial_set_rate,
-       .power_state = geni_serial_resource_state,
-};
-
 static const struct qcom_geni_device_data sa8255p_qcom_geni_console_data = {
        .console = true,
        .mode = GENI_SE_FIFO,
@@ -2019,6 +2012,15 @@ static const struct qcom_geni_device_data sa8255p_qcom_geni_console_data = {
        .resources_init = geni_serial_pwr_init,
        .set_rate = geni_serial_set_level,
 };
+#endif
+
+static const struct qcom_geni_device_data qcom_geni_uart_data = {
+       .console = false,
+       .mode = GENI_SE_DMA,
+       .resources_init = geni_serial_resource_init,
+       .set_rate = geni_serial_set_rate,
+       .power_state = geni_serial_resource_state,
+};
 
 static const struct qcom_geni_device_data sa8255p_qcom_geni_uart_data = {
        .console = false,
@@ -2039,6 +2041,7 @@ static const struct dev_pm_ops qcom_geni_serial_pm_ops = {
 };
 
 static const struct of_device_id qcom_geni_serial_match_table[] = {
+#if IS_ENABLED(CONFIG_SERIAL_QCOM_GENI_CONSOLE)
        {
                .compatible = "qcom,geni-debug-uart",
                .data = &qcom_geni_console_data,
@@ -2047,6 +2050,7 @@ static const struct of_device_id qcom_geni_serial_match_table[] = {
                .compatible = "qcom,sa8255p-geni-debug-uart",
                .data = &sa8255p_qcom_geni_console_data,
        },
+#endif
        {
                .compatible = "qcom,geni-uart",
                .data = &qcom_geni_uart_data,