diff options
| author | Ian Jackson <[email protected]> | 2009-11-18 11:08:11 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2009-12-11 15:18:05 -0800 |
| commit | 68cb4f8e246bbbc649980be0628cae9265870a91 (patch) | |
| tree | ac21578ae76e640af2584726a80c20673f25ef1a /tools/perf/scripts/python | |
| parent | 7e11a0fb3b7ab83871b7a56c7a67c603283ec4b9 (diff) | |
Serial: Do not read IIR in serial8250_start_tx when UART_BUG_TXEN
Do not read IIR in serial8250_start_tx when UART_BUG_TXEN
Reading the IIR clears some oustanding interrupts so it is not safe.
Instead, simply transmit immediately if the buffer is empty without
regard to IIR.
Signed-off-by: Ian Jackson <[email protected]>
Reviewed-by: Markus Armbruster <[email protected]>
Reviewed-by: Jiri Kosina <[email protected]>
Cc: Alan Cox <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions