3.19.8-ckt13 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Tilman Schmidt <tilman@xxxxxxx>
commit 4c5e354a974214dfb44cd23fa0429327693bc3ea upstream.
When shutting down the device, the struct ser_cardstate must not be
kfree()d immediately after the call to platform_device_unregister()
since the embedded struct platform_device is still in use.
Move the kfree() call to the release method instead.
Signed-off-by: Tilman Schmidt <tilman@xxxxxxx>
Fixes: 2869b23e4b95 ("drivers/isdn/gigaset: new M101 driver (v2)")
Reported-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Signed-off-by: Paul Bolle <pebolle@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/isdn/gigaset/ser-gigaset.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c
index 3ac9c41..0ebb52b 100644
--- a/drivers/isdn/gigaset/ser-gigaset.c
+++ b/drivers/isdn/gigaset/ser-gigaset.c
@@ -370,19 +370,23 @@ static void gigaset_freecshw(struct cardstate *cs)
tasklet_kill(&cs->write_tasklet);
if (!cs->hw.ser)
return;
- dev_set_drvdata(&cs->hw.ser->dev.dev, NULL);
platform_device_unregister(&cs->hw.ser->dev);
- kfree(cs->hw.ser);
- cs->hw.ser = NULL;
}
static void gigaset_device_release(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
+ struct cardstate *cs = dev_get_drvdata(dev);
/* adapted from platform_device_release() in drivers/base/platform.c */
kfree(dev->platform_data);
kfree(pdev->resource);
+
+ if (!cs)
+ return;
+ dev_set_drvdata(dev, NULL);
+ kfree(cs->hw.ser);
+ cs->hw.ser = NULL;
}
/*
--
1.9.1
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