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| author | Raul E Rangel <rrangel@chromium.org> | 2020-02-27 14:15:04 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-03-02 06:55:22 +0000 |
| commit | 1066c43cb64399e75d810cd0b6d126c0d153407d (patch) | |
| tree | 680ea8166d6800570606a4f287cbe379f56f07e8 | |
| parent | 3d82db55bb854c2e596d4f52d5b58e32c53ca8b6 (diff) | |
| download | chrome-ec-1066c43cb64399e75d810cd0b6d126c0d153407d.tar.gz | |
common/keyboard_8042: Add logging to keyboard_clear_buffer
It's useful to know when the buffer has been cleared.
BUG=b:145575366
BRANCH=none
TEST=Saw x in kblog
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I1c3474687c91a3e017d7a7a0e4e7967c3fb10f05
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2079693
Reviewed-by: Edward Hill <ecgh@chromium.org>
| -rw-r--r-- | common/keyboard_8042.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/common/keyboard_8042.c b/common/keyboard_8042.c index 3e17e1736f..feac0dd7f3 100644 --- a/common/keyboard_8042.c +++ b/common/keyboard_8042.c @@ -173,6 +173,8 @@ struct kblog_t { * k = to-host queue head pointer before byte dequeued * K = byte actually sent to host via LPC * + * x = to_host queue was cleared + * * The to-host head and tail pointers are logged pre-wrapping to the * queue size. This means that they continually increment as units * are dequeued and enqueued respectively. Since only the bottom @@ -386,7 +388,9 @@ static void reset_rate_and_delay(void) void keyboard_clear_buffer(void) { + CPRINTS("KB Clear Buffer"); mutex_lock(&to_host_mutex); + kblog_put('x', queue_count(&to_host)); queue_init(&to_host); mutex_unlock(&to_host_mutex); lpc_keyboard_clear_buffer(); |