[PATCH v2 01/22] usb: serial: ti_usb_3410_5052: Do not use __uX types

Mathieu OTHACEHE
2016-07-26T18:10:35Z

__uX types should only be used for user-space interactions.

Signed-off-by: Mathieu OTHACEHE <m.othacehe@gmail.com>
---

Changelog:
v2:
* Replace cpu_to_be16s calls by cpu_to_be16
* Remove other useless casts

drivers/usb/serial/ti_usb_3410_5052.c | 101 +++++++++++++++++-----------------
1 file changed, 51 insertions(+), 50 deletions(-)

diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 07b4bf0..ebeea51 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -179,23 +179,23 @@

/* Config struct */
struct ti_uart_config {
- __u16 wBaudRate;
- __u16 wFlags;
- __u8 bDataBits;
- __u8 bParity;
- __u8 bStopBits;
+ __be16 wBaudRate;
+ __be16 wFlags;
+ u8 bDataBits;
+ u8 bParity;
+ u8 bStopBits;
char cXon;
char cXoff;
- __u8 bUartMode;
+ u8 bUartMode;
} __packed;

/* Get port status */
struct ti_port_status {
- __u8 bCmdCode;
- __u8 bModuleId;
- __u8 bErrorCode;
- __u8 bMSR;
- __u8 bLSR;
+ u8 bCmdCode;
+ u8 bModuleId;
+ u8 bErrorCode;
+ u8 bMSR;
+ u8 bLSR;
} __packed;

/* Purge modes */
@@ -218,12 +218,12 @@ struct ti_port_status {
#define TI_RW_DATA_DOUBLE_WORD 0x04

struct ti_write_data_bytes {
- __u8 bAddrType;
- __u8 bDataType;
- __u8 bDataCounter;
+ u8 bAddrType;
+ u8 bDataType;
+ u8 bDataCounter;
__be16 wBaseAddrHi;
__be16 wBaseAddrLo;
- __u8 bData[0];
+ u8 bData[0];
} __packed;

struct ti_read_data_request {
@@ -258,7 +258,7 @@ struct ti_interrupt {
/* Firmware image header */
struct ti_firmware_header {
__le16 wLength;
- __u8 bCheckSum;
+ u8 bCheckSum;
} __packed;

/* UART addresses */
@@ -288,9 +288,9 @@ struct ti_firmware_header {

struct ti_port {
int tp_is_open;
- __u8 tp_msr;
- __u8 tp_shadow_mcr;
- __u8 tp_uart_mode; /* 232 or 485 modes */
+ u8 tp_msr;
+ u8 tp_shadow_mcr;
+ u8 tp_uart_mode; /* 232 or 485 modes */
unsigned int tp_uart_base_addr;
int tp_flags;
struct ti_device *tp_tdev;
@@ -343,7 +343,7 @@ static int ti_get_serial_info(struct ti_port *tport,
struct serial_struct __user *ret_arg);
static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
struct serial_struct __user *new_arg);
-static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
+static void ti_handle_new_msr(struct ti_port *tport, u8 msr);

static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
@@ -354,7 +354,7 @@ static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
__u16 moduleid, __u16 value, __u8 *data, int size);

static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
- unsigned long addr, __u8 mask, __u8 byte);
+ unsigned long addr, u8 mask, u8 byte);

static int ti_download_firmware(struct ti_device *tdev);

@@ -647,9 +647,11 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
struct urb *urb;
int port_number;
int status;
- __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINUOUS |
- TI_PIPE_TIMEOUT_ENABLE |
- (TI_TRANSFER_TIMEOUT << 2));
+ u16 open_settings;
+
+ open_settings = (TI_PIPE_MODE_CONTINUOUS |
+ TI_PIPE_TIMEOUT_ENABLE |
+ (TI_TRANSFER_TIMEOUT << 2));

if (tport == NULL)
return -ENODEV;
@@ -959,6 +961,8 @@ static void ti_set_termios(struct tty_struct *tty,
int status;
int port_number = port->port_number;
unsigned int mcr;
+ u16 wbaudrate;
+ u16 wflags = 0;

cflag = tty->termios.c_cflag;
iflag = tty->termios.c_iflag;
@@ -974,12 +978,10 @@ static void ti_set_termios(struct tty_struct *tty,
if (!config)
return;

- config->wFlags = 0;
-
/* these flags must be set */
- config->wFlags |= TI_UART_ENABLE_MS_INTS;
- config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
- config->bUartMode = (__u8)(tport->tp_uart_mode);
+ wflags |= TI_UART_ENABLE_MS_INTS;
+ wflags |= TI_UART_ENABLE_AUTO_START_DMA;
+ config->bUartMode = tport->tp_uart_mode;

switch (cflag & CSIZE) {
case CS5:
@@ -1002,14 +1004,14 @@ static void ti_set_termios(struct tty_struct *tty,

if (cflag & PARENB) {
if (cflag & PARODD) {
- config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
+ wflags |= TI_UART_ENABLE_PARITY_CHECKING;
config->bParity = TI_UART_ODD_PARITY;
} else {
- config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
+ wflags |= TI_UART_ENABLE_PARITY_CHECKING;
config->bParity = TI_UART_EVEN_PARITY;
}
} else {
- config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
+ wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
config->bParity = TI_UART_NO_PARITY;
}

@@ -1021,8 +1023,8 @@ static void ti_set_termios(struct tty_struct *tty,
if (cflag & CRTSCTS) {
/* RTS flow control must be off to drop RTS for baud rate B0 */
if ((cflag & CBAUD) != B0)
- config->wFlags |= TI_UART_ENABLE_RTS_IN;
- config->wFlags |= TI_UART_ENABLE_CTS_OUT;
+ wflags |= TI_UART_ENABLE_RTS_IN;
+ wflags |= TI_UART_ENABLE_CTS_OUT;
} else {
ti_restart_read(tport, tty);
}
@@ -1032,21 +1034,21 @@ static void ti_set_termios(struct tty_struct *tty,
config->cXoff = STOP_CHAR(tty);

if (I_IXOFF(tty))
- config->wFlags |= TI_UART_ENABLE_X_IN;
+ wflags |= TI_UART_ENABLE_X_IN;
else
ti_restart_read(tport, tty);

if (I_IXON(tty))
- config->wFlags |= TI_UART_ENABLE_X_OUT;
+ wflags |= TI_UART_ENABLE_X_OUT;
}

baud = tty_get_baud_rate(tty);
if (!baud)
baud = 9600;
if (tport->tp_tdev->td_is_3410)
- config->wBaudRate = (__u16)((923077 + baud/2) / baud);
+ wbaudrate = (923077 + baud/2) / baud;
else
- config->wBaudRate = (__u16)((461538 + baud/2) / baud);
+ wbaudrate = (461538 + baud/2) / baud;

/* FIXME: Should calculate resulting baud here and report it back */
if ((cflag & CBAUD) != B0)
@@ -1054,12 +1056,12 @@ static void ti_set_termios(struct tty_struct *tty,

dev_dbg(&port->dev,
"%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
- __func__, baud, config->wBaudRate, config->wFlags,
+ __func__, baud, wbaudrate, wflags,
config->bDataBits, config->bParity, config->bStopBits,
config->cXon, config->cXoff, config->bUartMode);

- cpu_to_be16s(&config->wBaudRate);
- cpu_to_be16s(&config->wFlags);
+ config->wBaudRate = cpu_to_be16(wbaudrate);
+ config->wFlags = cpu_to_be16(wflags);

status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
(__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
@@ -1189,7 +1191,7 @@ static void ti_interrupt_callback(struct urb *urb)
int function;
int status = urb->status;
int retval;
- __u8 msr;
+ u8 msr;

switch (status) {
case 0:
@@ -1522,7 +1524,7 @@ static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
}

-static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
+static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
{
struct async_icount *icount;
struct tty_struct *tty;
@@ -1634,8 +1636,8 @@ static int ti_command_in_sync(struct ti_device *tdev, __u8 command,

static int ti_write_byte(struct usb_serial_port *port,
- struct ti_device *tdev, unsigned long addr,
- __u8 mask, __u8 byte)
+ struct ti_device *tdev, unsigned long addr,
+ u8 mask, u8 byte)
{
int status;
unsigned int size;
@@ -1669,7 +1671,7 @@ static int ti_write_byte(struct usb_serial_port *port,
}

static int ti_do_download(struct usb_device *dev, int pipe,
- u8 *buffer, int size)
+ u8 *buffer, int size)
{
int pos;
u8 cs = 0;
@@ -1679,11 +1681,10 @@ static int ti_do_download(struct usb_device *dev, int pipe,
int len;

for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
- cs = (__u8)(cs + buffer[pos]);
+ cs = (u8)(cs + buffer[pos]);

header = (struct ti_firmware_header *)buffer;
- header->wLength = cpu_to_le16((__u16)(size
- - sizeof(struct ti_firmware_header)));
+ header->wLength = cpu_to_le16(size - sizeof(*header));
header->bCheckSum = cs;

dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
@@ -1701,7 +1702,7 @@ static int ti_download_firmware(struct ti_device *tdev)
{
int status;
int buffer_size;
- __u8 *buffer;
+ u8 *buffer;
struct usb_device *dev = tdev->td_serial->dev;
unsigned int pipe = usb_sndbulkpipe(dev,
tdev->td_serial->port[0]->bulk_out_endpointAddress);
--
2.9.0