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serial: pic32: Add checks for devm_clk_get() in pic32_uart_probe()

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As the devm_clk_get() may return ERR_PTR, its return value needs to be
checked to avoid invalid poineter dereference.

Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221125093832.33386-1-yuancan@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yuan Can 2022-11-25 09:38:32 +00:00 committed by Greg Kroah-Hartman
parent c54d485436
commit 3bec2f77f1
1 changed files with 2 additions and 0 deletions
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2
drivers/tty/serial/pic32_uart.c
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@ -889,6 +889,8 @@ static int pic32_uart_probe(struct platform_device *pdev)
sport->irq_rx = irq_of_parse_and_map(np, 1);
sport->irq_tx = irq_of_parse_and_map(np, 2);
sport->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(sport->clk))
return PTR_ERR(sport->clk);
sport->dev = &pdev->dev;
/* Hardware flow control: gpios