diff options
| author |   Neil Armstrong <narmstrong@baylibre.com> | 2021-06-01 10:48:30 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-04 12:58:55 +0200 |
| commit | 4d2aa178d2ad2fb156711113790dde13e9aa2376 (patch) | |
| tree | ecf6201f705e7438e2ce996ad2cfc8fbfd28a378 /include/linux/usb | |
| parent | usb: dwc3: meson-g12a: Disable the regulator in the error handling path of the probe (diff) | |
| download | linux-dev-4d2aa178d2ad2fb156711113790dde13e9aa2376.tar.xz linux-dev-4d2aa178d2ad2fb156711113790dde13e9aa2376.zip | |
usb: dwc3-meson-g12a: fix usb2 PHY glue init when phy0 is disabled
When only PHY1 is used (for example on Odroid-HC4), the regmap init code
uses the usb2 ports when doesn't initialize the PHY1 regmap entry.
This fixes:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020
...
pc : regmap_update_bits_base+0x40/0xa0
lr : dwc3_meson_g12a_usb2_init_phy+0x4c/0xf8
...
Call trace:
regmap_update_bits_base+0x40/0xa0
dwc3_meson_g12a_usb2_init_phy+0x4c/0xf8
dwc3_meson_g12a_usb2_init+0x7c/0xc8
dwc3_meson_g12a_usb_init+0x28/0x48
dwc3_meson_g12a_probe+0x298/0x540
platform_probe+0x70/0xe0
really_probe+0xf0/0x4d8
driver_probe_device+0xfc/0x168
...
Fixes: 013af227f58a97 ("usb: dwc3: meson-g12a: handle the phy and glue registers separately")
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210601084830.260196-1-narmstrong@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb')
0 files changed, 0 insertions, 0 deletions