diff options
| author | Sean Anderson <sean.anderson@seco.com> | 2022-01-27 14:00:03 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-16 12:56:34 +0100 |
| commit | 93feb2bdf6d4a8aeaae1a0e675bd4f6acfb91171 (patch) | |
| tree | f02fbdbf159adfa01b6e431b4ec271a7437a8fec | |
| parent | fc50f42e46164b7adc5a9402d28d5aa15db30bcb (diff) | |
| download | linux-stable-93feb2bdf6d4a8aeaae1a0e675bd4f6acfb91171.tar.gz linux-stable-93feb2bdf6d4a8aeaae1a0e675bd4f6acfb91171.tar.bz2 linux-stable-93feb2bdf6d4a8aeaae1a0e675bd4f6acfb91171.zip | |
usb: ulpi: Call of_node_put correctly
commit 0a907ee9d95e3ac35eb023d71f29eae0aaa52d1b upstream.
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>
| -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); |