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Surface Serial Hub communication is, in its core, packet based. Each sequenced packet requires to be acknowledged, via an ACK-type control packet. In case invalid data has been received by the driver, a NAK-type (not-acknowledge/negative acknowledge) control packet is sent, triggering retransmission. Control packets are therefore a core communication primitive and used frequently enough (with every sequenced packet transmission sent by the embedded controller, including events and request responses) that it may warrant caching their allocations to reduce possible memory fragmentation. Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20201221183959.1186143-3-luzmaximilian@gmail.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
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| aggregator | ||
| Kconfig | ||
| Makefile | ||
| surface3-wmi.c | ||
| surface3_button.c | ||
| surface3_power.c | ||
| surface_gpe.c | ||
| surfacepro3_button.c | ||