Change in coreboot[master]: lib/thread: Remove printk in thread_mutex_lock

[Raul Rangel (Code Review)]

Raul Rangel has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/58980 )

Change subject: lib/thread: Remove printk in thread_mutex_lock
......................................................................

lib/thread: Remove printk in thread_mutex_lock

While helpful, it will cause a dead lock with the next CL that adds a
mutex in printk.

BUG=b:179699789
TEST=Boot guybrush to OS

Signed-off-by: Raul E Rangel 
Change-Id: I5a28f9c777fc0fb3bb73dff9e0974aeb6e210bba
---
M src/lib/thread.c
1 file changed, 0 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/80/58980/1

diff --git a/src/lib/thread.c b/src/lib/thread.c
index 7d5cdc5..4409d97 100644
--- a/src/lib/thread.c
+++ b/src/lib/thread.c
@@ -412,15 +412,9 @@

void thread_mutex_lock(struct thread_mutex *mutex)
 {
-	struct stopwatch sw;
-
-	stopwatch_init(&sw);
-
    while (mutex->locked)
    	assert(thread_yield() == 0);
    mutex->locked = true;
-
-	printk(BIOS_SPEW, "took %lu us to acquire mutex\n", stopwatch_duration_usecs(&sw));
 }

void thread_mutex_unlock(struct thread_mutex *mutex)