From: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Date: Thu, 14 Aug 2025 07:24:53 +0000 (+0200)
Subject: serial: 8250_rsa: use guard()s
X-Git-Tag: v6.18-rc1~77^2~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=54faf0473b15b762404d33d38cf613388ef94142;p=thirdparty%2Fkernel%2Flinux.git

serial: 8250_rsa: use guard()s

Having all the new guards, use them in the 8250_rsa code. This improves
readability, makes error handling easier, and marks locked portions of
code explicit.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250814072456.182853-14-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/8250/8250_rsa.c b/drivers/tty/serial/8250/8250_rsa.c
index d34093cc03ad9..ff52ad02f6be6 100644
--- a/drivers/tty/serial/8250/8250_rsa.c
+++ b/drivers/tty/serial/8250/8250_rsa.c
@@ -140,9 +140,8 @@ void rsa_enable(struct uart_8250_port *up)
 		return;
 
 	if (up->port.uartclk != SERIAL_RSA_BAUD_BASE * 16) {
-		uart_port_lock_irq(&up->port);
+		guard(uart_port_lock_irq)(&up->port);
 		__rsa_enable(up);
-		uart_port_unlock_irq(&up->port);
 	}
 	if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16)
 		serial_out(up, UART_RSA_FRR, 0);
@@ -165,7 +164,8 @@ void rsa_disable(struct uart_8250_port *up)
 	if (up->port.uartclk != SERIAL_RSA_BAUD_BASE * 16)
 		return;
 
-	uart_port_lock_irq(&up->port);
+	guard(uart_port_lock_irq)(&up->port);
+
 	mode = serial_in(up, UART_RSA_MSR);
 	result = !(mode & UART_RSA_MSR_FIFO);
 
@@ -177,7 +177,6 @@ void rsa_disable(struct uart_8250_port *up)
 
 	if (result)
 		up->port.uartclk = SERIAL_RSA_BAUD_BASE_LO * 16;
-	uart_port_unlock_irq(&up->port);
 }
 EXPORT_SYMBOL_GPL_FOR_MODULES(rsa_disable, "8250_base");