From: Mika Westerberg mika.westerberg@linux.intel.com
commit 5e0c94d3aeeecc68c573033f08d9678fecf253bd upstream.
The driver gets driver_data from memory that is marked as const (which is probably put to read-only memory) and it then modifies it. This likely causes some sort of fault to happen.
Fix this by taking a copy of the structure.
Fixes: c94a8ff14de3 ("platform/x86: intel_mid_powerbtn: make mid_pb_ddata const") Signed-off-by: Mika Westerberg mika.westerberg@linux.intel.com Reviewed-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/platform/x86/intel_mid_powerbtn.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/platform/x86/intel_mid_powerbtn.c +++ b/drivers/platform/x86/intel_mid_powerbtn.c @@ -146,9 +146,10 @@ static int mid_pb_probe(struct platform_
input_set_capability(input, EV_KEY, KEY_POWER);
- ddata = (struct mid_pb_ddata *)id->driver_data; + ddata = devm_kmemdup(&pdev->dev, (void *)id->driver_data, + sizeof(*ddata), GFP_KERNEL); if (!ddata) - return -ENODATA; + return -ENOMEM;
ddata->dev = &pdev->dev; ddata->irq = irq;