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([2401:4900:cbde:8ff:92b4:bf0c:6a0f:7ccb]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2baf1d40a65sm108036435ad.20.2026.05.11.09.02.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 May 2026 09:02:27 -0700 (PDT) From: Rakesh Alasyam To: gregkh@linuxfoundation.org Cc: richard.genoud@gmail.com, jirislaby@kernel.org, nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com, claudiu.beznea@tuxon.dev, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Rakesh Alasyam Subject: [PATCH] tty: serial: atmel: Ignore chars when CREAD is cleared Date: Mon, 11 May 2026 21:26:55 +0530 Message-ID: <20260511155655.26435-1-alasyamrakesh77@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <2026051106-obliged-dismount-d85f@gregkh> References: <2026051106-obliged-dismount-d85f@gregkh> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Ignore received characters when CREAD is cleared by adding RXRDY to ignore_status_mask. This replaces an existing TODO in the driver. Tested on hardware. Signed-off-by: Rakesh Alasyam --- v2: - Add blank line before comment - Tested on hardware --- drivers/tty/serial/atmel_serial.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 5d8c1cfc1c60..5c756dc904b0 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -2184,7 +2184,8 @@ static void atmel_set_termios(struct uart_port *port, if (termios->c_iflag & IGNPAR) port->ignore_status_mask |= ATMEL_US_OVRE; } - /* TODO: Ignore all characters if CREAD is set.*/ + if (!(termios->c_cflag & CREAD)) + port->ignore_status_mask |= ATMEL_US_RXRDY; /* update the per-port timeout */ uart_update_timeout(port, termios->c_cflag, baud); -- 2.43.0