From: Bard Liao yung-chuan.liao@linux.intel.com
In MSI mode, the use of separate handlers and threads for the Intel IPC, stream and SoundWire shared interrupt leads to timeouts and lost interrupts.
The solution is to merge all interrupt handling across all links with a single thread function. The use of a linked list enables this thread function to walk through all contexts and figure out which link needs attention.
Signed-off-by: Bard Liao yung-chuan.liao@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- include/linux/soundwire/sdw_intel.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/linux/soundwire/sdw_intel.h b/include/linux/soundwire/sdw_intel.h index 2ce3e9ecc4b6..2a56180bc9dc 100644 --- a/include/linux/soundwire/sdw_intel.h +++ b/include/linux/soundwire/sdw_intel.h @@ -70,6 +70,7 @@ struct sdw_intel_link_res; * @handle: ACPI parent handle * @links: information for each link (controller-specific and kept * opaque here) + * @link_list: list to handle interrupts across all links */ struct sdw_intel_ctx { int count; @@ -77,6 +78,7 @@ struct sdw_intel_ctx { u32 link_mask; acpi_handle handle; struct sdw_intel_link_res *links; + struct list_head link_list; };
/**