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| author | Johan Hovold <johan@kernel.org> | 2020-07-08 14:49:51 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-21 11:02:09 +0200 |
| commit | 676879ac44ddbd94cfc991da957f982e03b36bf1 (patch) | |
| tree | 02029aa6f2715550750956680a5b597dddfeade5 /drivers/usb | |
| parent | 347bbf448c3dd9673b6592a2cb43ee8b46365934 (diff) | |
| download | linux-stable-676879ac44ddbd94cfc991da957f982e03b36bf1.tar.gz linux-stable-676879ac44ddbd94cfc991da957f982e03b36bf1.tar.bz2 linux-stable-676879ac44ddbd94cfc991da957f982e03b36bf1.zip | |
USB: serial: ftdi_sio: make process-packet buffer unsigned
[ Upstream commit ab4cc4ef6724ea588e835fc1e764c4b4407a70b7 ]
Use an unsigned type for the process-packet buffer argument and give it
a more apt name.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index a7cb0968259e..2583d21382b0 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -2051,12 +2051,12 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, #define FTDI_RS_ERR_MASK (FTDI_RS_BI | FTDI_RS_PE | FTDI_RS_FE | FTDI_RS_OE) static int ftdi_process_packet(struct usb_serial_port *port, - struct ftdi_private *priv, char *packet, int len) + struct ftdi_private *priv, unsigned char *buf, int len) { + unsigned char status; + unsigned char *ch; int i; - char status; char flag; - char *ch; if (len < 2) { dev_dbg(&port->dev, "malformed packet\n"); @@ -2066,7 +2066,7 @@ static int ftdi_process_packet(struct usb_serial_port *port, /* Compare new line status to the old one, signal if different/ N.B. packet may be processed more than once, but differences are only processed once. */ - status = packet[0] & FTDI_STATUS_B0_MASK; + status = buf[0] & FTDI_STATUS_B0_MASK; if (status != priv->prev_status) { char diff_status = status ^ priv->prev_status; @@ -2092,7 +2092,7 @@ static int ftdi_process_packet(struct usb_serial_port *port, } /* save if the transmitter is empty or not */ - if (packet[1] & FTDI_RS_TEMT) + if (buf[1] & FTDI_RS_TEMT) priv->transmit_empty = 1; else priv->transmit_empty = 0; @@ -2106,29 +2106,29 @@ static int ftdi_process_packet(struct usb_serial_port *port, * data payload to avoid over-reporting. */ flag = TTY_NORMAL; - if (packet[1] & FTDI_RS_ERR_MASK) { + if (buf[1] & FTDI_RS_ERR_MASK) { /* Break takes precedence over parity, which takes precedence * over framing errors */ - if (packet[1] & FTDI_RS_BI) { + if (buf[1] & FTDI_RS_BI) { flag = TTY_BREAK; port->icount.brk++; usb_serial_handle_break(port); - } else if (packet[1] & FTDI_RS_PE) { + } else if (buf[1] & FTDI_RS_PE) { flag = TTY_PARITY; port->icount.parity++; - } else if (packet[1] & FTDI_RS_FE) { + } else if (buf[1] & FTDI_RS_FE) { flag = TTY_FRAME; port->icount.frame++; } /* Overrun is special, not associated with a char */ - if (packet[1] & FTDI_RS_OE) { + if (buf[1] & FTDI_RS_OE) { port->icount.overrun++; tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); } } port->icount.rx += len; - ch = packet + 2; + ch = buf + 2; if (port->port.console && port->sysrq) { for (i = 0; i < len; i++, ch++) { |