| commit | ec97eaad1383ab2500fcf9a07ade6044fbcc67f5 | [log] [tgz] |
|---|---|---|
| author | Nicholas Piggin <npiggin@gmail.com> | Tue May 01 00:55:54 2018 +1000 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Mon Jul 23 20:11:55 2018 +1000 |
| tree | 4c05fb0e4b4f6db8a2a56921f28dc5cc0931ce6e | |
| parent | a9bf5c8a271b9a954709b7ada1bd258f5cadf7ff [diff] |
tty: hvc: hvc_poll() break hv read loop Avoid looping with the spinlock held while there is read data being returned from the hv driver. Instead note if the entire size returned by tty_buffer_request_room was read, and request another read poll. This limits the critical section lengths, and provides more even service to other consoles in case there is a pathological condition. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>