diff options
| author | Finn Thain <[email protected]> | 2020-11-20 15:39:56 +1100 |
|---|---|---|
| committer | Martin K. Petersen <[email protected]> | 2020-11-23 22:12:09 -0500 |
| commit | 03fe6a640a05c5dc04b6bcdddfb981d015e84ed4 (patch) | |
| tree | d3ed4bbb0cbcea87439e6bb56cfa1625c8acceb7 /tools/perf/scripts/python | |
| parent | 66df79ccbc2f617a2bbaa7108a2b50a6869de5d4 (diff) | |
scsi: atari_scsi: Fix race condition between .queuecommand and EH
It is possible that bus_reset_cleanup() or .eh_abort_handler could be
invoked during NCR5380_queuecommand(). If that takes place before the new
command is enqueued and after the ST-DMA "lock" has been acquired, the
ST-DMA "lock" will be released again. This will result in a lost DMA
interrupt and a command timeout. Fix this by excluding EH and interrupt
handlers while the new command is enqueued.
Link: https://lore.kernel.org/r/af25163257796b50bb99d4ede4025cea55787b8f.1605847196.git.fthain@telegraphics.com.au
Tested-by: Michael Schmitz <[email protected]>
Reviewed-by: Michael Schmitz <[email protected]>
Signed-off-by: Finn Thain <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions