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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2020-06-11 07:35:39 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-06-11 07:35:39 +0200 |
| commit | f8eaeee4571358afa5fb0d9e6374d095c7531c96 (patch) | |
| tree | 40e37b7eb56c4f6f43273c07b58f310e68cfc2a6 /drivers/serial/serial_ns16550.c | |
| parent | 91649f1065d735bb4bcc6bb1a8067e670dcbbead (diff) | |
| parent | 34d18aaa2a47522a8b607fb2e61c79f5b10ecb9a (diff) | |
| download | barebox-f8eaeee4571358afa5fb0d9e6374d095c7531c96.tar.gz barebox-f8eaeee4571358afa5fb0d9e6374d095c7531c96.tar.xz | |
Merge branch 'for-next/misc'
Diffstat (limited to 'drivers/serial/serial_ns16550.c')
| -rw-r--r-- | drivers/serial/serial_ns16550.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c index 5d6cec82a4..f117ab9dc1 100644 --- a/drivers/serial/serial_ns16550.c +++ b/drivers/serial/serial_ns16550.c @@ -308,6 +308,17 @@ static int ns16550_tstc(struct console_device *cdev) return ((ns16550_read(cdev, lsr) & LSR_DR) != 0); } +/** + * @brief Flush remaining characters in serial device + * + * @param[in] cdev pointer to console device + */ +static void ns16550_flush(struct console_device *cdev) +{ + /* Loop Doing Nothing */ + while ((ns16550_read(cdev, lsr) & LSR_TEMT) == 0) ; +} + static void ns16550_probe_dt(struct device_d *dev, struct ns16550_priv *priv) { struct device_node *np = dev->device_node; @@ -501,6 +512,7 @@ static int ns16550_probe(struct device_d *dev) cdev->putc = ns16550_putc; cdev->getc = ns16550_getc; cdev->setbrg = ns16550_setbaudrate; + cdev->flush = ns16550_flush; cdev->linux_console_name = devtype->linux_console_name; priv->fcrval = FCRVAL; |