hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[PATCH] pl2303 - status line 

I'm attaching a patch to fix status when using Siemens X65
mobile. This mobile use first byte instead of normal UART_STATE
byte.


From: Flavio Leitner <fbl@conectiva.com.br>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>


Index: gregkh-2.6/drivers/usb/serial/pl2303.c
===================================================================
This commit is contained in:
Flavio Leitner 2005-04-18 17:39:31 -07:00 committed by Greg K-H
parent 6fdd8e8e33
commit 97bb13ec5b
1 changed files with 29 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/usb/serial/pl2303.c
View File

@ -817,15 +817,40 @@ static void pl2303_shutdown (struct usb_serial *serial)
} }
} }
static void pl2303_update_line_status(struct usb_serial_port *port,
unsigned char *data,
unsigned int actual_length)
{
struct pl2303_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
u8 status_idx = UART_STATE;
u8 length = UART_STATE;
if ((le16_to_cpu(port->serial->dev->descriptor.idVendor) == SIEMENS_VENDOR_ID) &&
(le16_to_cpu(port->serial->dev->descriptor.idProduct) == SIEMENS_PRODUCT_ID_X65)) {
length = 1;
status_idx = 0;
}
if (actual_length < length)
goto exit;
/* Save off the uart status for others to look at */
spin_lock_irqsave(&priv->lock, flags);
priv->line_status = data[status_idx];
spin_unlock_irqrestore(&priv->lock, flags);
exit:
return;
}
static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs) static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs)
{ {
struct usb_serial_port *port = (struct usb_serial_port *) urb->context; struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
struct pl2303_private *priv = usb_get_serial_port_data(port);
unsigned char *data = urb->transfer_buffer; unsigned char *data = urb->transfer_buffer;
unsigned long flags; unsigned int actual_length = urb->actual_length;
int status; int status;
u8 uart_state;
dbg("%s (%d)", __FUNCTION__, port->number); dbg("%s (%d)", __FUNCTION__, port->number);
@ -844,19 +869,9 @@ static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs)
goto exit; goto exit;
} }
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, urb->transfer_buffer); usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, urb->transfer_buffer);
pl2303_update_line_status(port, data, actual_length);
if (urb->actual_length < UART_STATE)
goto exit;
/* Save off the uart status for others to look at */
uart_state = data[UART_STATE];
spin_lock_irqsave(&priv->lock, flags);
uart_state |= (priv->line_status & UART_STATE_TRANSIENT_MASK);
priv->line_status = uart_state;
spin_unlock_irqrestore(&priv->lock, flags);
exit: exit:
status = usb_submit_urb (urb, GFP_ATOMIC); status = usb_submit_urb (urb, GFP_ATOMIC);
if (status) if (status)