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Subject[PATCH 06/38] tty: serial: lpc32xx_hs: fix handling platform_get_irq result
Date
The function can return negative values.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
drivers/tty/serial/lpc32xx_hs.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c
index e92d7eb..7eb04ae 100644
--- a/drivers/tty/serial/lpc32xx_hs.c
+++ b/drivers/tty/serial/lpc32xx_hs.c
@@ -691,12 +691,13 @@ static int serial_hs_lpc32xx_probe(struct platform_device *pdev)
p->port.mapbase = res->start;
p->port.membase = NULL;

- p->port.irq = platform_get_irq(pdev, 0);
- if (p->port.irq < 0) {
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0) {
dev_err(&pdev->dev, "Error getting irq for HS UART port %d\n",
uarts_registered);
- return p->port.irq;
+ return ret;
}
+ p->port.irq = ret;

p->port.iotype = UPIO_MEM32;
p->port.uartclk = LPC32XX_MAIN_OSC_FREQ;
--
1.9.1


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