Commit 104cb574 authored by Christian Krafft's avatar Christian Krafft Committed by Jean Delvare
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i2c-pca-isa: Add access check to legacy ioports

When probing i2c-pca-isa writes to legacy ioports, which crashes the kernel
if there is no device at that port.
This patch adds a check_legacy_ioport call, so probe fails gracefully
and thus prevents the oops.
Signed-off-by: default avatarChristian Krafft <>
Signed-off-by: default avatarJean Delvare <>
parent 9e39ffef
......@@ -125,6 +125,13 @@ static int __devinit pca_isa_probe(struct device *dev, unsigned int id)
dev_info(dev, "i/o base %#08lx. irq %d\n", base, irq);
if (check_legacy_ioport(base)) {
dev_err(dev, "I/O address %#08lx is not available\n", base);
goto out;
if (!request_region(base, IO_SIZE, "i2c-pca-isa")) {
dev_err(dev, "I/O address %#08lx is in use\n", base);
goto out;
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