[PATCH 5.19 0898/1157] serial: pic32: fix missing clk_disable_unprepare() on error in pic32_uart_startup()

[Greg Kroah-Hartman]

From: Yang Yingliang <yangyingliang@xxxxxxxxxx>

[ Upstream commit 6f3cdf2bf1ba9b70de6c2921a415951a0d59873b ]

Fix the missing clk_disable_unprepare() before return
from pic32_uart_startup() in the error handling case.

Fixes: 157b9394709e ("serial: pic32_uart: Add PIC32 UART driver")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Reviewed-by: Jiri Slaby <jirislaby@xxxxxxxxxx>
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220525021204.2407631-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/tty/serial/pic32_uart.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/pic32_uart.c b/drivers/tty/serial/pic32_uart.c
index b399aac530fe..f418f1de66b3 100644
--- a/drivers/tty/serial/pic32_uart.c
+++ b/drivers/tty/serial/pic32_uart.c
@@ -503,7 +503,7 @@ static int pic32_uart_startup(struct uart_port *port)
 	if (!sport->irq_fault_name) {
 		dev_err(port->dev, "%s: kasprintf err!", __func__);
 		ret = -ENOMEM;
-		goto out_done;
+		goto out_disable_clk;
 	}
 	irq_set_status_flags(sport->irq_fault, IRQ_NOAUTOEN);
 	ret = request_irq(sport->irq_fault, pic32_uart_fault_interrupt,
@@ -579,6 +579,8 @@ static int pic32_uart_startup(struct uart_port *port)
 out_f:
 	free_irq(sport->irq_fault, port);
 	kfree(sport->irq_fault_name);
+out_disable_clk:
+	clk_disable_unprepare(sport->clk);
 out_done:
 	return ret;
 }
-- 
2.35.1