diff mbox series

serial: tegra: handle clk prepare error in tegra_uart_hw_init()

Message ID 20230817105406.228674-1-yiyang13@huawei.com
State New
Headers show
Series serial: tegra: handle clk prepare error in tegra_uart_hw_init() | expand

Commit Message

Yi Yang Aug. 17, 2023, 10:54 a.m. UTC 
In tegra_uart_hw_init(), the return value of clk_prepare_enable() should
be checked since it might fail.

Fixes: e9ea096dd225 ("serial: tegra: add serial driver")
Signed-off-by: Yi Yang <yiyang13@huawei.com>
---
 drivers/tty/serial/serial-tegra.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index 0b597b282fce..d4ec943cb8e9 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -996,7 +996,11 @@  static int tegra_uart_hw_init(struct tegra_uart_port *tup)
 	tup->ier_shadow = 0;
 	tup->current_baud = 0;
 
-	clk_prepare_enable(tup->uart_clk);
+	ret = clk_prepare_enable(tup->uart_clk);
+	if (ret) {
+		dev_err(tup->uport.dev, "could not enable clk\n");
+		return ret;
+	}
 
 	/* Reset the UART controller to clear all previous status.*/
 	reset_control_assert(tup->rst);