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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-09-09 08:39:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-10 19:04:31 +0300 |
| commit | 6e7f6b82c60afb46ff71c2127421c66207966d6d (patch) | |
| tree | 379d99391da9a5e9404964b4cf5cd28ec49889dd /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 11da3a7f84f19c26da6f86af878298694ede0804 (diff) | |
| download | linux-6e7f6b82c60afb46ff71c2127421c66207966d6d.tar.xz | |
tty: hvc: hvc_poll() fix read loop hang
Commit ec97eaad1383 ("tty: hvc: hvc_poll() break hv read loop") causes
the virtio console to hang at times (e.g., if you paste a bunch of
characters to it.
The reason is that get_chars must return 0 before we can be sure the
driver will kick or poll input again, but this change only scheduled a
poll if get_chars had returned a full count. Change this to poll on
any > 0 count.
Reported-by: Matteo Croce <mcroce@redhat.com>
Reported-by: Jason Gunthorpe <jgg@mellanox.com>
Tested-by: Matteo Croce <mcroce@redhat.com>
Tested-by: Jason Gunthorpe <jgg@mellanox.com>
Tested-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions