diff options
| author | Sean Anderson <sean.anderson@seco.com> | 2022-01-27 22:00:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-31 16:11:20 +0300 |
| commit | 0a907ee9d95e3ac35eb023d71f29eae0aaa52d1b (patch) | |
| tree | 2d688408d9b8d8f05828365c3481fb0f6bc78f86 /drivers/usb | |
| parent | 092f45b13e51666fe8ecbf2d6cd247aa7e6c1f74 (diff) | |
| download | linux-0a907ee9d95e3ac35eb023d71f29eae0aaa52d1b.tar.xz | |
usb: ulpi: Call of_node_put correctly
of_node_put should always be called on device nodes gotten from
of_get_*. Additionally, it should only be called after there are no
remaining users. To address the first issue, call of_node_put if later
steps in ulpi_register fail. To address the latter, call put_device if
device_register fails, which will call ulpi_dev_release if necessary.
Fixes: ef6a7bcfb01c ("usb: ulpi: Support device discovery via DT")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Link: https://lore.kernel.org/r/20220127190004.1446909-3-sean.anderson@seco.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/common/ulpi.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c index 09ad569a1a35..5509d3847af4 100644 --- a/drivers/usb/common/ulpi.c +++ b/drivers/usb/common/ulpi.c @@ -248,12 +248,16 @@ static int ulpi_register(struct device *dev, struct ulpi *ulpi) return ret; ret = ulpi_read_id(ulpi); - if (ret) + if (ret) { + of_node_put(ulpi->dev.of_node); return ret; + } ret = device_register(&ulpi->dev); - if (ret) + if (ret) { + put_device(&ulpi->dev); return ret; + } dev_dbg(&ulpi->dev, "registered ULPI PHY: vendor %04x, product %04x\n", ulpi->id.vendor, ulpi->id.product); |