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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-04-30 17:55:54 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-07-23 13:11:55 +0300 |
| commit | ec97eaad1383ab2500fcf9a07ade6044fbcc67f5 (patch) | |
| tree | 4c05fb0e4b4f6db8a2a56921f28dc5cc0931ce6e /crypto/sm4_generic.c | |
| parent | a9bf5c8a271b9a954709b7ada1bd258f5cadf7ff (diff) | |
| download | linux-ec97eaad1383ab2500fcf9a07ade6044fbcc67f5.tar.xz | |
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>
Diffstat (limited to 'crypto/sm4_generic.c')
0 files changed, 0 insertions, 0 deletions