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[SERIAL] mark several serial tables const

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This patch marks a few serial data structures const, moving them to
.rodata where they won't false-share cachelines with things that get
written to.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Arjan van de Ven 2005-11-28 21:04:11 +00:00 committed by Russell King
parent f5417612d7
commit cb3592be27
4 changed files with 6 additions and 6 deletions
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2
drivers/serial/8250.c
View File

@ -102,7 +102,7 @@ static unsigned int share_irqs = SERIAL8250_SHARE_IRQS;
#define SERIAL_PORT_DFNS
#endif
static struct old_serial_port old_serial_port[] = {
static const struct old_serial_port old_serial_port[] = {
SERIAL_PORT_DFNS /* defined in asm/serial.h */
};

2
drivers/serial/8250_pci.c
View File

@ -468,7 +468,7 @@ static unsigned short timedia_eight_port[] = {
0x9167, 0x9168, 0xA066, 0xA167, 0xA168, 0
};
static struct timedia_struct {
static const struct timedia_struct {
int num;
unsigned short *ids;
} timedia_data[] = {

2
drivers/serial/serial_core.c
View File

@ -1779,7 +1779,7 @@ struct baud_rates {
unsigned int cflag;
};
static struct baud_rates baud_rates[] = {
static const struct baud_rates baud_rates[] = {
{ 921600, B921600 },
{ 460800, B460800 },
{ 230400, B230400 },

6
drivers/serial/serial_cs.c
View File

@ -85,7 +85,7 @@ struct multi_id {
int multi; /* 1 = multifunction, > 1 = # ports */
};
static struct multi_id multi_id[] = {
static const struct multi_id multi_id[] = {
{ MANFID_OMEGA, PRODID_OMEGA_QSP_100, 4 },
{ MANFID_QUATECH, PRODID_QUATECH_DUAL_RS232, 2 },
{ MANFID_QUATECH, PRODID_QUATECH_DUAL_RS232_D1, 2 },
@ -354,8 +354,8 @@ next_tuple(client_handle_t handle, tuple_t * tuple, cisparse_t * parse)
static int simple_config(dev_link_t *link)
{
static kio_addr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
static int size_table[2] = { 8, 16 };
static const kio_addr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
static const int size_table[2] = { 8, 16 };
client_handle_t handle = link->handle;
struct serial_info *info = link->priv;
struct serial_cfg_mem *cfg_mem;