diff options
| author | Brad Love <[email protected]> | 2018-01-04 19:04:13 -0500 |
|---|---|---|
| committer | Mauro Carvalho Chehab <[email protected]> | 2018-03-06 04:33:22 -0500 |
| commit | c7c7e8d7803406daa21e96d00c357de8b77b6764 (patch) | |
| tree | 6fdb3361fa7ee63ecec0738bfe8a0b54b3cfc177 /lib/memory-notifier-error-inject.c | |
| parent | 1b5f69f5b94489343d939700a50a0a841a16f97d (diff) | |
media: em28xx: USB bulk packet size fix
Hauppauge em28xx bulk devices exhibit continuity errors and corrupted
packets, when run in VMWare virtual machines. Unknown if other
manufacturers bulk models exhibit the same issue. KVM/Qemu is unaffected.
According to documentation the maximum packet multiplier for em28xx in bulk
transfer mode is 256 * 188 bytes. This changes the size of bulk transfers
to maximum supported value and have a bonus beneficial alignment.
Before:
After:
This sets up USB to expect just as many bytes as the em28xx is set to emit.
Successful usage under load afterwards natively and in both VMWare
and KVM/Qemu virtual machines.
Signed-off-by: Brad Love <[email protected]>
Reviewed-by: Michael Ira Krufky <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Diffstat (limited to 'lib/memory-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions