ALSA: vx: More constifications

Apply const prefix to every possible place: the static tables for DSP
commands, the string tables, and register/offset tables.

Just for minor optimization and no functional changes.

Link: https://lore.kernel.org/r/20200105144823.29547-8-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/drivers/vx/vx_cmd.c

@@ -15,7 +15,7 @@
 /*
  * Array of DSP commands
  */
-static struct vx_cmd_info vx_dsp_cmds[] = {
+static const struct vx_cmd_info vx_dsp_cmds[] = {
 [CMD_VERSION] =			{ 0x010000, 2, RMH_SSIZE_FIXED, 1 },
 [CMD_SUPPORTED] =		{ 0x020000, 1, RMH_SSIZE_FIXED, 2 },
 [CMD_TEST_IT] =			{ 0x040000, 1, RMH_SSIZE_FIXED, 1 },

sound/drivers/vx/vx_core.c

@@ -39,7 +39,7 @@ MODULE_LICENSE("GPL");
 int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
 {
 	unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
-	static char *reg_names[VX_REG_MAX] = {
+	static const char * const reg_names[VX_REG_MAX] = {
 		"ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL",
 		"DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ",
 		"ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2",
@@ -588,11 +588,11 @@ static void vx_reset_board(struct vx_core *chip, int cold_reset)
 static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 {
 	struct vx_core *chip = entry->private_data;
-	static char *audio_src_vxp[] = { "Line", "Mic", "Digital" };
-	static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" };
-	static char *clock_mode[] = { "Auto", "Internal", "External" };
-	static char *clock_src[] = { "Internal", "External" };
-	static char *uer_type[] = { "Consumer", "Professional", "Not Present" };
+	static const char * const audio_src_vxp[] = { "Line", "Mic", "Digital" };
+	static const char * const audio_src_vx2[] = { "Analog", "Analog", "Digital" };
+	static const char * const clock_mode[] = { "Auto", "Internal", "External" };
+	static const char * const clock_src[] = { "Internal", "External" };
+	static const char * const uer_type[] = { "Consumer", "Professional", "Not Present" };
 	
 	snd_iprintf(buffer, "%s\n", chip->card->longname);
 	snd_iprintf(buffer, "Xilinx Firmware: %s\n",

sound/drivers/vx/vx_hwdep.c

@@ -32,7 +32,7 @@ MODULE_FIRMWARE("vx/l_1_vp4.d56");
 
 int snd_vx_setup_firmware(struct vx_core *chip)
 {
-	static char *fw_files[VX_TYPE_NUMS][4] = {
+	static const char * const fw_files[VX_TYPE_NUMS][4] = {
 		[VX_TYPE_BOARD] = {
 			NULL, "x1_1_vx2.xlx", "bd56002.boot", "l_1_vx2.d56",
 		},

sound/drivers/vx/vx_mixer.c

@@ -961,7 +961,7 @@ int snd_vx_mixer_new(struct vx_core *chip)
 		return err;
 	/* VU, peak, saturation meters */
 	for (c = 0; c < 2; c++) {
-		static char *dir[2] = { "Output", "Input" };
+		static const char * const dir[2] = { "Output", "Input" };
 		for (i = 0; i < chip->hw->num_ins; i++) {
 			int val = (i * 2) | (c << 8);
 			if (c == 1) {

sound/pci/vx222/vx222_ops.c

@@ -19,7 +19,7 @@
 #include "vx222.h"
 
 
-static int vx2_reg_offset[VX_REG_MAX] = {
+static const int vx2_reg_offset[VX_REG_MAX] = {
 	[VX_ICR]    = 0x00,
 	[VX_CVR]    = 0x04,
 	[VX_ISR]    = 0x08,
@@ -45,7 +45,7 @@ static int vx2_reg_offset[VX_REG_MAX] = {
 	[VX_GPIOC]  = 0x54,		// VX_GPIOC (new with PLX9030)
 };
 
-static int vx2_reg_index[VX_REG_MAX] = {
+static const int vx2_reg_index[VX_REG_MAX] = {
 	[VX_ICR]	= 1,
 	[VX_CVR]	= 1,
 	[VX_ISR]	= 1,

sound/pcmcia/vx/vxp_ops.c

@@ -15,7 +15,7 @@
 #include "vxpocket.h"
 
 
-static int vxp_reg_offset[VX_REG_MAX] = {
+static const int vxp_reg_offset[VX_REG_MAX] = {
 	[VX_ICR]	= 0x00,		// ICR
 	[VX_CVR]	= 0x01,		// CVR
 	[VX_ISR]	= 0x02,		// ISR