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serial: sh-sci: Make probe fail for ports that exceed the maximum count 

The driver supports a maximum number of ports configurable at compile
time. Make sure the probe() method fails when registering a port that
exceeds the maximum instead of returning success without registering the
port.

This fixes a crash at system suspend time, when the driver tried to
suspend a non-registered port using the UART core.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Laurent Pinchart 2012-06-13 00:28:24 +02:00 committed by Greg Kroah-Hartman
parent 9800ee6f50
commit 8856a7d6b7
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/sh-sci.c
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@ -2391,7 +2391,7 @@ static int __devinit sci_probe_single(struct platform_device *dev,
index+1, SCI_NPORTS);
dev_notice(&dev->dev, "Consider bumping "
"CONFIG_SERIAL_SH_SCI_NR_UARTS!\n");
return 0;
return -EINVAL;
}
ret = sci_init_single(dev, sciport, index, p);