On 17/01/2022 15:40, Greg KH wrote:
On Mon, Jan 17, 2022 at 03:00:39PM +0000, Jon Hunter wrote:
Commit 7495af930835 ("ARM: multi_v7_defconfig: Enable drivers for
DragonBoard 410c") enables the CONFIG_PHY_QCOM_USB_HS for the ARM
multi_v7_defconfig. Enabling this Kconfig is causing the kernel to crash
on the Tegra20 Ventana platform in the ulpi_match() function.
The Qualcomm USB HS PHY driver that is enabled by CONFIG_PHY_QCOM_USB_HS,
registers a ulpi_driver but this driver does not provide an 'id_table',
so when ulpi_match() is called on the Tegra20 Ventana platform, it
crashes when attempting to deference the id_table pointer which is not
valid. The Qualcomm USB HS PHY driver uses device-tree for matching the
ULPI driver with the device and so fix this crash by using device-tree
for matching if the id_table is not valid.
Fixes: ef6a7bcfb01c ("usb: ulpi: Support device discovery via DT")
Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
No cc: of stable since this is a bug going back to 4.11?
Yes good point.
Heikki, let me know if you want me to resend or if you can add the
stable tag?
Cheers
Jon
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nvpublic
