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tty: serial: altera_uart: Check for NULL platform_data in probe.

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Follow altera_jtag_uart.  This fixes a crash if there is a mistake in the DTS.

Signed-off-by: Yuriy Kozlov <[email protected]>
Signed-off-by: Tobias Klauser <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Yuriy Kozlov 2012-03-29 09:55:27 +02:00 • committed by Greg Kroah-Hartman
commit acede70d65
1 changed files with 2 additions and 2 deletions
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4
drivers/tty/serial/altera_uart.c
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@ -556,7 +556,7 @@ static int __devinit altera_uart_probe(struct platform_device *pdev)
res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res_mem)
port->mapbase = res_mem->start;
else if (platp->mapbase)
else if (platp)
port->mapbase = platp->mapbase;
else
return -EINVAL;
@ -564,7 +564,7 @@ static int __devinit altera_uart_probe(struct platform_device *pdev)
res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res_irq)
port->irq = res_irq->start;
else if (platp->irq)
else if (platp)
port->irq = platp->irq;
/* Check platform data first so we can override device node data */