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[59.120.186.245]) by smtp.gmail.com with ESMTPSA id w26sm4690392pfj.119.2020.01.29.21.47.57 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 29 Jan 2020 21:47:57 -0800 (PST) From: "Ji-Ze Hong (Peter Hong)" X-Google-Original-From: "Ji-Ze Hong (Peter Hong)" To: johan@kernel.org Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, peter_hong@fintek.com.tw, "Ji-Ze Hong (Peter Hong)" Subject: [PATCH V3 1/6] USB: serial: f81232: Extract LSR handler Date: Thu, 30 Jan 2020 13:47:47 +0800 Message-Id: <20200130054752.9368-2-hpeter+linux_kernel@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200130054752.9368-1-hpeter+linux_kernel@gmail.com> References: <20200130054752.9368-1-hpeter+linux_kernel@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Extract LSR handler to function that can be re-used by F81532A/534A/535/536. Signed-off-by: Ji-Ze Hong (Peter Hong) --- Changelog: v3: 1. Change git comment for describe more information. v2: 1: Separate LSR handler from original combined driver. drivers/usb/serial/f81232.c | 53 +++++++++++++++++++++---------------- 1 file changed, 30 insertions(+), 23 deletions(-) diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index 43fa1f0716b7..c07d376c743d 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -322,10 +322,38 @@ static void f81232_read_int_callback(struct urb *urb) __func__, retval); } +static char f81232_handle_lsr(struct usb_serial_port *port, u8 lsr) +{ + struct f81232_private *priv = usb_get_serial_port_data(port); + char tty_flag = TTY_NORMAL; + + if (!(lsr & UART_LSR_BRK_ERROR_BITS)) + return tty_flag; + + if (lsr & UART_LSR_BI) { + tty_flag = TTY_BREAK; + port->icount.brk++; + usb_serial_handle_break(port); + } else if (lsr & UART_LSR_PE) { + tty_flag = TTY_PARITY; + port->icount.parity++; + } else if (lsr & UART_LSR_FE) { + tty_flag = TTY_FRAME; + port->icount.frame++; + } + + if (lsr & UART_LSR_OE) { + port->icount.overrun++; + schedule_work(&priv->lsr_work); + tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); + } + + return tty_flag; +} + static void f81232_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; - struct f81232_private *priv = usb_get_serial_port_data(port); unsigned char *data = urb->transfer_buffer; char tty_flag; unsigned int i; @@ -341,29 +369,8 @@ static void f81232_process_read_urb(struct urb *urb) /* bulk-in data: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]... */ for (i = 0; i < urb->actual_length; i += 2) { - tty_flag = TTY_NORMAL; lsr = data[i]; - - if (lsr & UART_LSR_BRK_ERROR_BITS) { - if (lsr & UART_LSR_BI) { - tty_flag = TTY_BREAK; - port->icount.brk++; - usb_serial_handle_break(port); - } else if (lsr & UART_LSR_PE) { - tty_flag = TTY_PARITY; - port->icount.parity++; - } else if (lsr & UART_LSR_FE) { - tty_flag = TTY_FRAME; - port->icount.frame++; - } - - if (lsr & UART_LSR_OE) { - port->icount.overrun++; - schedule_work(&priv->lsr_work); - tty_insert_flip_char(&port->port, 0, - TTY_OVERRUN); - } - } + tty_flag = f81232_handle_lsr(port, lsr); if (port->port.console && port->sysrq) { if (usb_serial_handle_sysrq_char(port, data[i + 1])) -- 2.17.1