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| author | Levente Kurusa <levex@linux.com> | 2015-06-19 09:05:47 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2015-06-29 13:33:39 +1000 |
| commit | 1e65030e0f448a1dec171f2d897d0d8c6b7e634d (patch) | |
| tree | 827046ca21efd073e8f9c4b0948c7f09a09ce7b2 | |
| parent | 2868d4637f1d52577c7b486b43468802c5a57f45 (diff) | |
| download | linux-1e65030e0f448a1dec171f2d897d0d8c6b7e634d.tar.gz linux-1e65030e0f448a1dec171f2d897d0d8c6b7e634d.tar.xz | |
drivers/w1/w1_int.c: call put_device if device_register fails
Currently, memsetting and kfreeing the device is bad behaviour. The
device will have a reference count of 1 and hence can cause trouble
because it has kfree'd. Proper way to handle a failed device_register is
to call put_device right after it fails.
Signed-off-by: Levente Kurusa <levex@linux.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | drivers/w1/w1_int.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c index 47249a30eae3..20f766afa4c7 100644 --- a/drivers/w1/w1_int.c +++ b/drivers/w1/w1_int.c @@ -91,8 +91,7 @@ static struct w1_master *w1_alloc_dev(u32 id, int slave_count, int slave_ttl, err = device_register(&dev->dev); if (err) { pr_err("Failed to register master device. err=%d\n", err); - memset(dev, 0, sizeof(struct w1_master)); - kfree(dev); + put_device(&dev->dev); dev = NULL; } |