[printk,v3,26/40] tty: hvc: use console_is_registered()

Message ID 20221107141638.3790965-27-john.ogness@linutronix.de
State New
Headers
Series reduce console_lock scope |

Commit Message

John Ogness Nov. 7, 2022, 2:16 p.m. UTC
  It is not reliable to check for CON_ENABLED in order to identify if a
console is registered. Use console_is_registered() instead.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
---
 drivers/tty/hvc/hvc_console.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
  

Comments

Petr Mladek Nov. 10, 2022, 2:52 p.m. UTC | #1
On Mon 2022-11-07 15:22:24, John Ogness wrote:
> It is not reliable to check for CON_ENABLED in order to identify if a
> console is registered. Use console_is_registered() instead.
> 
> Signed-off-by: John Ogness <john.ogness@linutronix.de>

Reviewed-by: Petr Mladek <pmladek@suse.com>

Best Regards,
Petr
  

Patch

diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 4802cfaa107f..a683e21df19c 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -264,8 +264,8 @@  static void hvc_port_destruct(struct tty_port *port)
 
 static void hvc_check_console(int index)
 {
-	/* Already enabled, bail out */
-	if (hvc_console.flags & CON_ENABLED)
+	/* Already registered, bail out */
+	if (console_is_registered(&hvc_console))
 		return;
 
  	/* If this index is what the user requested, then register