diff options
Diffstat (limited to 'projects/linux/io/done/SCIF-investigate-DMA-limitations.yaml')
| -rw-r--r-- | projects/linux/io/done/SCIF-investigate-DMA-limitations.yaml | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/projects/linux/io/done/SCIF-investigate-DMA-limitations.yaml b/projects/linux/io/done/SCIF-investigate-DMA-limitations.yaml new file mode 100644 index 0000000..15f9dde --- /dev/null +++ b/projects/linux/io/done/SCIF-investigate-DMA-limitations.yaml @@ -0,0 +1,16 @@ +title: SCIF; check DMA problems with SysRq, BREAK and parity errors +team: IO +key: 3cdb3c8c-03d9-11eb-91e0-b7234f6a00bc +status: Done +assignee: Ulrich + +upstream: + - next: 87b8061bad9bd4b549b2daf36ffbaa57be2789a2 # serial: sh-sci: fix break handling for sysrq + +comments: + - "check IO IRC log from 2020-10-01 for details" + - "it seems we need to enable interrupts during DMA again, discard the receive interrupts and deal with break and parity" + - "Ulrich will try if it works and how it will affect DMA performance" + - "Ulrich said it has nothing to do with DMA, break support is broken per se" + - "v1: https://patchwork.kernel.org/project/linux-renesas-soc/patch/20210816162201.28801-1-uli+renesas@fpond.eu/" + - "merged" |