mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-09-11 18:25:33 -04:00
1cd52a99c8
The driver currently sets only the overflow interrupt enable bit (OVR_FLOW_IEN) in the configuration register, leaving the overflow mode bit (OVR_FLOW_M) at its default value of 0. According to the TCA8418 datasheet (SCPS215G, Section 8.6.4.1 "Overflow Errata - Description"), both OVR_FLOW_M (Bit_5) and OVR_FLOW_IEN (Bit_3) must be set high for the overflow interrupt to be generated. If only OVR_FLOW_IEN is set, FIFO overflow events are silently lost without notifying the host. Fix this by setting OVR_FLOW_M alongside OVR_FLOW_IEN in the configuration register. Signed-off-by: Zhian Liang <liangzhan5dev@gmail.com> Link: https://patch.msgid.link/20260529013900.43854-1-liangzhan5dev@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>