ath5k: constify stuff

Make some structures const to place them in .rodata, since we won't
change them.

Most important parts of objdump -h:
-  0 .text         00011170
+  0 .text         00011140
-  5 .rodata       0000828e
+  5 .rodata       0000895e
- 13 .data         00000560
+ 13 .data         00000110
- 14 .devinit.data 00000260
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath5k/attach.c

@@ -34,14 +34,14 @@
 static int ath5k_hw_post(struct ath5k_hw *ah)
 {
 
-	int i, c;
-	u16 cur_reg;
-	u16 regs[2] = {AR5K_STA_ID0, AR5K_PHY(8)};
-	u32 var_pattern;
-	u32 static_pattern[4] = {
+	static const u32 static_pattern[4] = {
 		0x55555555,	0xaaaaaaaa,
 		0x66666666,	0x99999999
 	};
+	static const u16 regs[2] = { AR5K_STA_ID0, AR5K_PHY(8) };
+	int i, c;
+	u16 cur_reg;
+	u32 var_pattern;
 	u32 init_val;
 	u32 cur_val;
 
@@ -106,7 +106,6 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
 {
 	struct ath5k_hw *ah;
 	struct pci_dev *pdev = sc->pdev;
-	u8 mac[ETH_ALEN] = {};
 	int ret;
 	u32 srev;
 
@@ -312,7 +311,7 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
 	}
 
 	/* MAC address is cleared until add_interface */
-	ath5k_hw_set_lladdr(ah, mac);
+	ath5k_hw_set_lladdr(ah, (u8[ETH_ALEN]){});
 
 	/* Set BSSID to bcast address: ff:ff:ff:ff:ff:ff for now */
 	memset(ah->ah_bssid, 0xff, ETH_ALEN);

drivers/net/wireless/ath5k/base.c

@@ -79,7 +79,7 @@ MODULE_VERSION("0.6.0 (EXPERIMENTAL)");
 
 
 /* Known PCI ids */
-static struct pci_device_id ath5k_pci_id_table[] __devinitdata = {
+static const struct pci_device_id ath5k_pci_id_table[] = {
 	{ PCI_VDEVICE(ATHEROS, 0x0207), .driver_data = AR5K_AR5210 }, /* 5210 early */
 	{ PCI_VDEVICE(ATHEROS, 0x0007), .driver_data = AR5K_AR5210 }, /* 5210 */
 	{ PCI_VDEVICE(ATHEROS, 0x0011), .driver_data = AR5K_AR5211 }, /* 5311 - this is on AHB bus !*/
@@ -103,7 +103,7 @@ static struct pci_device_id ath5k_pci_id_table[] __devinitdata = {
 MODULE_DEVICE_TABLE(pci, ath5k_pci_id_table);
 
 /* Known SREVs */
-static struct ath5k_srev_name srev_names[] = {
+static const struct ath5k_srev_name srev_names[] = {
 	{ "5210",	AR5K_VERSION_MAC,	AR5K_SREV_AR5210 },
 	{ "5311",	AR5K_VERSION_MAC,	AR5K_SREV_AR5311 },
 	{ "5311A",	AR5K_VERSION_MAC,	AR5K_SREV_AR5311A },
@@ -142,7 +142,7 @@ static struct ath5k_srev_name srev_names[] = {
 	{ "xxxxx",	AR5K_VERSION_RAD,	AR5K_SREV_UNKNOWN },
 };
 
-static struct ieee80211_rate ath5k_rates[] = {
+static const struct ieee80211_rate ath5k_rates[] = {
 	{ .bitrate = 10,
 	  .hw_value = ATH5K_RATE_CODE_1M, },
 	{ .bitrate = 20,
@@ -248,7 +248,7 @@ static void ath5k_bss_info_changed(struct ieee80211_hw *hw,
 		struct ieee80211_bss_conf *bss_conf,
 		u32 changes);
 
-static struct ieee80211_ops ath5k_hw_ops = {
+static const struct ieee80211_ops ath5k_hw_ops = {
 	.tx 		= ath5k_tx,
 	.start 		= ath5k_start,
 	.stop 		= ath5k_stop,

drivers/net/wireless/ath5k/debug.c

@@ -82,14 +82,14 @@ static int ath5k_debugfs_open(struct inode *inode, struct file *file)
 /* debugfs: registers */
 
 struct reg {
-	char *name;
+	const char *name;
 	int addr;
 };
 
 #define REG_STRUCT_INIT(r) { #r, r }
 
 /* just a few random registers, might want to add more */
-static struct reg regs[] = {
+static const struct reg regs[] = {
 	REG_STRUCT_INIT(AR5K_CR),
 	REG_STRUCT_INIT(AR5K_RXDP),
 	REG_STRUCT_INIT(AR5K_CFG),
@@ -142,7 +142,7 @@ static struct reg regs[] = {
 
 static void *reg_start(struct seq_file *seq, loff_t *pos)
 {
-	return *pos < ARRAY_SIZE(regs) ? &regs[*pos] : NULL;
+	return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
 }
 
 static void reg_stop(struct seq_file *seq, void *p)
@@ -153,7 +153,7 @@ static void reg_stop(struct seq_file *seq, void *p)
 static void *reg_next(struct seq_file *seq, void *p, loff_t *pos)
 {
 	++*pos;
-	return *pos < ARRAY_SIZE(regs) ? &regs[*pos] : NULL;
+	return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
 }
 
 static int reg_show(struct seq_file *seq, void *p)
@@ -290,7 +290,7 @@ static const struct file_operations fops_reset = {
 
 /* debugfs: debug level */
 
-static struct {
+static const struct {
 	enum ath5k_debug_level level;
 	const char *name;
 	const char *desc;

drivers/net/wireless/ath5k/reset.c

@@ -102,7 +102,7 @@ static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah,
  * index into rates for control rates, we can set it up like this because
  * this is only used for AR5212 and we know it supports G mode
  */
-static int control_rates[] =
+static const unsigned int control_rates[] =
 	{ 0, 1, 1, 1, 4, 4, 6, 6, 8, 8, 8, 8 };
 
 /**