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Commita88520bfc0("usb: gadget: tegra: Reduce pad power") added calls to tegra_phy_xusb_utmi_pad_power_on/down in the Tegra XUDC driver to control the pad power. This change is causing a kernel panic when powering down the pads on entering suspend with the Jetson TX2 platform. The panic occurs because the 'xudc->curr_utmi_phy' is not configured on this platform and we do not check to see if the pointer is valid before attempting to deference the pointer. Fix this by checking to see if the 'phy' pointer passed to tegra_phy_xusb_utmi_pad_power_on/down is valid. Fixes:a88520bfc0("usb: gadget: tegra: Reduce pad power") Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Link: https://lore.kernel.org/r/20221010135132.30809-1-jonathanh@nvidia.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.