diff options
| author | Wolfram Sang <w.sang@pengutronix.de> | 2008-12-21 02:54:32 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2008-12-21 02:54:32 -0700 |
| commit | 418441d9ebe84b205cb23eb0ab214c1f991621fe (patch) | |
| tree | e0618291d7162abf04a478155ab7553b02213fb2 /drivers/serial | |
| parent | aec739e010f8163eac225f4e331ac7fbd59ac5c8 (diff) | |
| download | linux-418441d9ebe84b205cb23eb0ab214c1f991621fe.tar.bz2 | |
powerpc/mpc5200: fix error paths in PSC UART probe function
- error cases for mapbase and irq were unbundled
- mapped irq now gets disposed on error
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/mpc52xx_uart.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index d2a1fc29834e..0c3a2ab1612c 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -1148,22 +1148,29 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match) return ret; port->mapbase = res.start; + if (!port->mapbase) { + dev_dbg(&op->dev, "Could not allocate resources for PSC\n"); + return -EINVAL; + } + port->irq = irq_of_parse_and_map(op->node, 0); + if (port->irq == NO_IRQ) { + dev_dbg(&op->dev, "Could not get irq\n"); + return -EINVAL; + } dev_dbg(&op->dev, "mpc52xx-psc uart at %p, irq=%x, freq=%i\n", (void *)port->mapbase, port->irq, port->uartclk); - if ((port->irq == NO_IRQ) || !port->mapbase) { - printk(KERN_ERR "Could not allocate resources for PSC\n"); - return -EINVAL; - } - /* Add the port to the uart sub-system */ ret = uart_add_one_port(&mpc52xx_uart_driver, port); - if (!ret) - dev_set_drvdata(&op->dev, (void *)port); + if (ret) { + irq_dispose_mapping(port->irq); + return ret; + } - return ret; + dev_set_drvdata(&op->dev, (void *)port); + return 0; } static int |