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Everytime the usb20 phy is enabled, there is a "sleeping function called from invalid context" BUG. In addition, there is a recursive locking happening because of the recurse call to clk_enable(). clk_enable() from arch/arm/mach-davinci/clock.c uses spin_lock_irqsave() before to invoke the callback usb20_phy_clk_enable(). usb20_phy_clk_enable() uses clk_get() and clk_enable_prepapre() which may sleep. Replace clk_prepare_enable() by davinci_clk_enable(). Signed-off-by: Alexandre Bailon <abailon@baylibre.com> Suggested-by: David Lechner <david@lechnology.com> [nsekhar@ti.com: minor commit description adjustment] Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.