Mikko Perttunen
5a8d95d20c
gpu: host1x: Assign intr waiter inside lock
Move the assignment of the ref out-pointer in host1x_intr_add_action to happen within the spinlock. With the current arrangement, it is possible for the waiter to complete before the assignment has happened, which breaks horribly if the waiter completion callback tries to use the reference. In practice, there is currently no situation where this issue can manifest -- it was first noticed with the upcoming DMA fence implementation patches. As such this doesn't need to be backported. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
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.
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