usb: ulpi: Fix debugfs directory leak

The ULPI per-device debugfs root is named after the ulpi device's
parent, but ulpi_unregister_interface tries to remove a debugfs
directory named after the ulpi device itself. This results in the
directory sticking around and preventing subsequent (deferred) probes
from succeeding. Change the directory name to match the ulpi device.

Fixes: bd0a0a024f2a ("usb: ulpi: Add debugfs support")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Link: https://lore.kernel.org/r/20240126223800.2864613-1-sean.anderson@seco.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c
index 84d91b1c1eed53e11539b69ccaa80080870ab043..0886b19d2e1c8f2b1c0f4e8bf85d6240f7cf19d1 100644 (file)
--- a/drivers/usb/common/ulpi.c
+++ b/drivers/usb/common/ulpi.c
@@ -301,7 +301,7 @@ static int ulpi_register(struct device *dev, struct ulpi *ulpi)
                return ret;
        }
 
-       root = debugfs_create_dir(dev_name(dev), ulpi_root);
+       root = debugfs_create_dir(dev_name(&ulpi->dev), ulpi_root);
        debugfs_create_file("regs", 0444, root, ulpi, &ulpi_regs_fops);
 
        dev_dbg(&ulpi->dev, "registered ULPI PHY: vendor %04x, product %04x\n",