[PATCH 1/2] tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error

From: Christophe JAILLET
Date: Fri Jun 09 2023 - 00:45:56 EST


If clk_get_rate() fails, the clk that has just been allocated needs to be
freed.

Fixes: 5f5a7a5578c5 ("serial: samsung: switch to clkdev based clock lookup")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
drivers/tty/serial/samsung_tty.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 2a7520ad3abd..dd751e7010e3 100644
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -1459,8 +1459,10 @@ static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport,
continue;

rate = clk_get_rate(clk);
- if (!rate)
+ if (!rate) {
+ clk_put(clk);
continue;
+ }

if (ourport->info->has_divslot) {
unsigned long div = rate / req_baud;
--
2.34.1