Ratelimiting these pr_debug()s can reduce the console flood during
bulk dynamic-debug activation, in environments where a serial console
is used.

Signed-off-by: Jim Cromie <[email protected]>
---
 drivers/tty/serial/serial_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 487756947a96..6db465619c70 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1790,8 +1790,8 @@ static void uart_wait_until_sent(struct tty_struct *tty, 
int timeout)
 
        expire = jiffies + timeout;
 
-       pr_debug("uart_wait_until_sent(%u), jiffies=%lu, expire=%lu...\n",
-               port->line, jiffies, expire);
+       pr_debug_ratelimited("waiting on (%u) jiffies=%lu, expire=%lu...\n",
+                            port->line, jiffies, expire);
 
        /*
         * Check whether the transmitter is empty every 'char_time'.
-- 
2.53.0

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