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Thunderbolt services should not care which HopID (ring) they use for sending and receiving packets over the high-speed DMA path, so make tb_ring_alloc_rx() and tb_ring_alloc_tx() accept negative HopID. This means that the NHI will allocate next available HopID for the caller automatically. These HopIDs will be allocated from the range which is not reserved for the Thunderbolt protocol (8 .. hop_count - 1). The allocated HopID can be retrieved from ring->hop field after the ring has been allocated successfully if needed. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Michael Jamet <michael.jamet@intel.com> Reviewed-by: Yehezkel Bernat <yehezkel.bernat@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| README | ||
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.