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| author | Moteen Shah <m-shah@ti.com> | 2026-09-18 15:33:46 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-09-23 14:49:47 +0200 |
| commit | 3f4e6289053c72a22f058ec60478daa9931fed53 (patch) | |
| tree | b04f81330d994900393cbe9ba8856ed728de5bda /tools/perf/scripts/python | |
| parent | a198cfbc91b0ad6d12aa2efa967bba322c66b18c (diff) | |
| download | linux-next-3f4e6289053c72a22f058ec60478daa9931fed53.tar.gz linux-next-3f4e6289053c72a22f058ec60478daa9931fed53.zip | |
serial: 8250_dw: Add ti,tda54-uart quirk to skip empty FIFO read
dw8250_handle_irq() does a bogus RX read on RX_TIMEOUT with no data
present, to avoid an interrupt storm. On the IP version used in
TDA54, that interrupt storm no longer occurs, but reading an empty
RX FIFO instead triggers a data abort.
Add a DW_UART_QUIRK_SKIP_EMPTY_FIFO_READ quirk for ti,tda54-uart to
skip that read and avoid the data abort.
Signed-off-by: Udit Kumar <u-kumar1@ti.com>
Signed-off-by: Moteen Shah <m-shah@ti.com>
Link: https://patch.msgid.link/20260918100346.4044899-3-m-shah@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions