[PATCH v2 2/3] nozomi: constify driver

Frank Seidel
2008-02-01T08:14:22Z

From: Jan Engelhardt <jengelh@computergmbh.de>

nozomi: constify structures and annotate vars

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Frank Seidel <fseidel@suse.de>
---
drivers/char/nozomi.c | 38 ++++++++++++++++++--------------------
1 file changed, 18 insertions(+), 20 deletions(-)

--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -395,7 +395,7 @@ struct buffer {
} __attribute__ ((packed));

/* Global variables */
-static struct pci_device_id nozomi_pci_tbl[] = {
+static struct pci_device_id nozomi_pci_tbl[] __devinitdata = {
{PCI_DEVICE(VENDOR1, DEVICE1)},
{},
};
@@ -471,12 +471,12 @@ out:
* -Optimize
* -Rewrite cleaner
*/
-static u32 write_mem32(void __iomem *mem_addr_start, u32 *buf,
+static u32 write_mem32(void __iomem *mem_addr_start, const u32 *buf,
u32 size_bytes)
{
u32 i = 0;
u32 *ptr = (__force u32 *) mem_addr_start;
- u16 *buf16;
+ const u16 *buf16;

if (unlikely(!ptr || !buf))
return 0;
@@ -484,7 +484,7 @@ static u32 write_mem32(void __iomem *mem
/* shortcut for extremely often used cases */
switch (size_bytes) {
case 2: /* 2 bytes */
- buf16 = (u16 *) buf;
+ buf16 = (const u16 *)buf;
writew(__cpu_to_le16(*buf16), (void __iomem *)ptr);
return 2;
break;
@@ -501,7 +501,7 @@ static u32 write_mem32(void __iomem *mem
while (i < size_bytes) {
if (size_bytes - i == 2) {
/* 2 bytes */
- buf16 = (u16 *) buf;
+ buf16 = (const u16 *)buf;
writew(__cpu_to_le16(*buf16), (void __iomem *)ptr);
i += 2;
} else {
@@ -723,8 +723,7 @@ static int nozomi_read_config_table(stru
/* Enable uplink interrupts */
static void enable_transmit_ul(enum port_type port, struct nozomi *dc)
{
- u16 mask[NOZOMI_MAX_PORTS] = \
- {MDM_UL, DIAG_UL, APP1_UL, APP2_UL, CTRL_UL};
+ static const u16 mask[] = {MDM_UL, DIAG_UL, APP1_UL, APP2_UL, CTRL_UL};

if (port < NOZOMI_MAX_PORTS) {
dc->last_ier |= mask[port];
@@ -737,8 +736,8 @@ static void enable_transmit_ul(enum port
/* Disable uplink interrupts */
static void disable_transmit_ul(enum port_type port, struct nozomi *dc)
{
- u16 mask[NOZOMI_MAX_PORTS] = \
- {~MDM_UL, ~DIAG_UL, ~APP1_UL, ~APP2_UL, ~CTRL_UL};
+ static const u16 mask[] =
+ {~MDM_UL, ~DIAG_UL, ~APP1_UL, ~APP2_UL, ~CTRL_UL};

if (port < NOZOMI_MAX_PORTS) {
dc->last_ier &= mask[port];
@@ -751,8 +750,7 @@ static void disable_transmit_ul(enum por
/* Enable downlink interrupts */
static void enable_transmit_dl(enum port_type port, struct nozomi *dc)
{
- u16 mask[NOZOMI_MAX_PORTS] = \
- {MDM_DL, DIAG_DL, APP1_DL, APP2_DL, CTRL_DL};
+ static const u16 mask[] = {MDM_DL, DIAG_DL, APP1_DL, APP2_DL, CTRL_DL};

if (port < NOZOMI_MAX_PORTS) {
dc->last_ier |= mask[port];
@@ -765,8 +763,8 @@ static void enable_transmit_dl(enum port
/* Disable downlink interrupts */
static void disable_transmit_dl(enum port_type port, struct nozomi *dc)
{
- u16 mask[NOZOMI_MAX_PORTS] = \
- {~MDM_DL, ~DIAG_DL, ~APP1_DL, ~APP2_DL, ~CTRL_DL};
+ static const u16 mask[] =
+ {~MDM_DL, ~DIAG_DL, ~APP1_DL, ~APP2_DL, ~CTRL_DL};

if (port < NOZOMI_MAX_PORTS) {
dc->last_ier &= mask[port];
@@ -783,7 +781,7 @@ static void disable_transmit_dl(enum por
static int send_data(enum port_type index, struct nozomi *dc)
{
u32 size = 0;
- struct port *port = &dc->port[index];
+ const struct port *port = &dc->port[index];
u8 toggle = port->toggle_ul;
void __iomem *addr = port->ul_addr[toggle];
u32 ul_size = port->ul_size[toggle];
@@ -1306,7 +1304,7 @@ static void nozomi_setup_private_data(st
static ssize_t card_type_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct nozomi *dc = pci_get_drvdata(to_pci_dev(dev));
+ const struct nozomi *dc = pci_get_drvdata(to_pci_dev(dev));

return sprintf(buf, "%d\n", dc->card_type);
}
@@ -1315,7 +1313,7 @@ static DEVICE_ATTR(card_type, S_IRUGO, c
static ssize_t open_ttys_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct nozomi *dc = pci_get_drvdata(to_pci_dev(dev));
+ const struct nozomi *dc = pci_get_drvdata(to_pci_dev(dev));

return sprintf(buf, "%u\n", dc->open_ttys);
}
@@ -1682,7 +1680,7 @@ static int ntty_write_room(struct tty_st
{
struct port *port = tty->driver_data;
int room = 0;
- struct nozomi *dc = get_dc_by_tty(tty);
+ const struct nozomi *dc = get_dc_by_tty(tty);

if (!dc || !port)
return 0;
@@ -1702,9 +1700,9 @@ exit:
/* Gets io control parameters */
static int ntty_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct port *port = tty->driver_data;
- struct ctrl_dl *ctrl_dl = &port->ctrl_dl;
- struct ctrl_ul *ctrl_ul = &port->ctrl_ul;
+ const struct port *port = tty->driver_data;
+ const struct ctrl_dl *ctrl_dl = &port->ctrl_dl;
+ const struct ctrl_ul *ctrl_ul = &port->ctrl_ul;

return (ctrl_ul->RTS ? TIOCM_RTS : 0) |
(ctrl_ul->DTR ? TIOCM_DTR : 0) |