[PATCH] USB: mark various usb tables const

patch below marks various USB tables and variables as const so that they
end up in .rodata section and don't cacheline share with things that get
written to. For the non-array variables it also allows gcc to optimize
more.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/class/cdc-acm.c

@@ -658,15 +658,15 @@ static int acm_tty_ioctl(struct tty_struct *tty, struct file *file, unsigned int
 	return -ENOIOCTLCMD;
 }
 
-static __u32 acm_tty_speed[] = {
+static const __u32 acm_tty_speed[] = {
 	0, 50, 75, 110, 134, 150, 200, 300, 600,
 	1200, 1800, 2400, 4800, 9600, 19200, 38400,
 	57600, 115200, 230400, 460800, 500000, 576000,
 	921600, 1000000, 1152000, 1500000, 2000000,
 	2500000, 3000000, 3500000, 4000000
 };
 
-static __u8 acm_tty_size[] = {
+static const __u8 acm_tty_size[] = {
 	5, 6, 7, 8
 };
 

drivers/usb/class/usblp.c

@@ -199,7 +199,7 @@ struct quirk_printer_struct {
 #define USBLP_QUIRK_BIDIR	0x1	/* reports bidir but requires unidirectional mode (no INs/reads) */
 #define USBLP_QUIRK_USB_INIT	0x2	/* needs vendor USB init string */
 
-static struct quirk_printer_struct quirk_printers[] = {
+static const struct quirk_printer_struct quirk_printers[] = {
 	{ 0x03f0, 0x0004, USBLP_QUIRK_BIDIR }, /* HP DeskJet 895C */
 	{ 0x03f0, 0x0104, USBLP_QUIRK_BIDIR }, /* HP DeskJet 880C */
 	{ 0x03f0, 0x0204, USBLP_QUIRK_BIDIR }, /* HP DeskJet 815C */
@@ -301,7 +301,7 @@ static void usblp_bulk_write(struct urb *urb, struct pt_regs *regs)
  * Get and print printer errors.
  */
 
-static char *usblp_messages[] = { "ok", "out of paper", "off-line", "on fire" };
+static const char *usblp_messages[] = { "ok", "out of paper", "off-line", "on fire" };
 
 static int usblp_check_status(struct usblp *usblp, int err)
 {

drivers/usb/core/devices.c

@@ -67,45 +67,45 @@
 /* Define ALLOW_SERIAL_NUMBER if you want to see the serial number of devices */
 #define ALLOW_SERIAL_NUMBER
 
-static char *format_topo =
+static const char *format_topo =
 /* T:  Bus=dd Lev=dd Prnt=dd Port=dd Cnt=dd Dev#=ddd Spd=ddd MxCh=dd */
 "\nT:  Bus=%2.2d Lev=%2.2d Prnt=%2.2d Port=%2.2d Cnt=%2.2d Dev#=%3d Spd=%3s MxCh=%2d\n";
 
-static char *format_string_manufacturer =
+static const char *format_string_manufacturer =
 /* S:  Manufacturer=xxxx */
   "S:  Manufacturer=%.100s\n";
 
-static char *format_string_product =
+static const char *format_string_product =
 /* S:  Product=xxxx */
   "S:  Product=%.100s\n";
 
 #ifdef ALLOW_SERIAL_NUMBER
-static char *format_string_serialnumber =
+static const char *format_string_serialnumber =
 /* S:  SerialNumber=xxxx */
   "S:  SerialNumber=%.100s\n";
 #endif
 
-static char *format_bandwidth =
+static const char *format_bandwidth =
 /* B:  Alloc=ddd/ddd us (xx%), #Int=ddd, #Iso=ddd */
   "B:  Alloc=%3d/%3d us (%2d%%), #Int=%3d, #Iso=%3d\n";
 
-static char *format_device1 =
+static const char *format_device1 =
 /* D:  Ver=xx.xx Cls=xx(sssss) Sub=xx Prot=xx MxPS=dd #Cfgs=dd */
   "D:  Ver=%2x.%02x Cls=%02x(%-5s) Sub=%02x Prot=%02x MxPS=%2d #Cfgs=%3d\n";
 
-static char *format_device2 =
+static const char *format_device2 =
 /* P:  Vendor=xxxx ProdID=xxxx Rev=xx.xx */
   "P:  Vendor=%04x ProdID=%04x Rev=%2x.%02x\n";
 
-static char *format_config =
+static const char *format_config =
 /* C:  #Ifs=dd Cfg#=dd Atr=xx MPwr=dddmA */
   "C:%c #Ifs=%2d Cfg#=%2d Atr=%02x MxPwr=%3dmA\n";
 
-static char *format_iface =
+static const char *format_iface =
 /* I:  If#=dd Alt=dd #EPs=dd Cls=xx(sssss) Sub=xx Prot=xx Driver=xxxx*/
   "I:  If#=%2d Alt=%2d #EPs=%2d Cls=%02x(%-5s) Sub=%02x Prot=%02x Driver=%s\n";
 
-static char *format_endpt =
+static const char *format_endpt =
 /* E:  Ad=xx(s) Atr=xx(ssss) MxPS=dddd Ivl=D?s */
   "E:  Ad=%02x(%c) Atr=%02x(%-4s) MxPS=%4d Ivl=%d%cs\n";
 

drivers/usb/host/uhci-debug.c

@@ -197,7 +197,7 @@ static int uhci_show_qh(struct uhci_qh *qh, char *buf, int len, int space)
 	}
 
 #ifdef CONFIG_PROC_FS
-static const char *qh_names[] = {
+static const char * const qh_names[] = {
   "skel_int128_qh", "skel_int64_qh",
   "skel_int32_qh", "skel_int16_qh",
   "skel_int8_qh", "skel_int4_qh",

drivers/usb/input/aiptek.c

@@ -338,7 +338,7 @@ struct aiptek {
  * the bitmap which comes from the tablet. This hides the
  * issue that the F_keys are not sequentially numbered.
  */
-static int macroKeyEvents[] = {
+static const int macroKeyEvents[] = {
 	KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
 	KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11,
 	KEY_F12, KEY_F13, KEY_F14, KEY_F15, KEY_F16, KEY_F17,

drivers/usb/input/ati_remote.c

@@ -146,7 +146,7 @@ static char init1[] = { 0x01, 0x00, 0x20, 0x14 };
 static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 };
 
 /* Acceleration curve for directional control pad */
-static char accel[] = { 1, 2, 4, 6, 9, 13, 20 };
+static const char accel[] = { 1, 2, 4, 6, 9, 13, 20 };
 
 /* Duplicate event filtering time.
  * Sequential, identical KIND_FILTERED inputs with less than
@@ -197,7 +197,7 @@ struct ati_remote {
 #define KIND_ACCEL      7   /* Directional keypad - left, right, up, down.*/
 
 /* Translation table from hardware messages to input events. */
-static struct {
+static const struct {
 	short kind;
 	unsigned char data1, data2;
 	int type;

drivers/usb/input/fixp-arith.h

@@ -38,7 +38,7 @@ typedef s16 fixp_t;
 #define FRAC_MASK ((1<<FRAC_N)-1)
 
 // Not to be used directly. Use fixp_{cos,sin}
-static fixp_t cos_table[45] = {
+static const fixp_t cos_table[45] = {
 	0x0100,	0x00FF,	0x00FF,	0x00FE,	0x00FD,	0x00FC,	0x00FA,	0x00F8,
 	0x00F6,	0x00F3,	0x00F0,	0x00ED,	0x00E9,	0x00E6,	0x00E2,	0x00DD,
 	0x00D9,	0x00D4,	0x00CF,	0x00C9,	0x00C4,	0x00BE,	0x00B8,	0x00B1,

drivers/usb/input/hid-core.c

@@ -1454,7 +1454,7 @@ void hid_init_reports(struct hid_device *hid)
  * Alphabetically sorted blacklist by quirk type.
  */
 
-static struct hid_blacklist {
+static const struct hid_blacklist {
 	__u16 idVendor;
 	__u16 idProduct;
 	unsigned quirks;

drivers/usb/input/hid-input.c

@@ -39,7 +39,7 @@
 
 #define unk	KEY_UNKNOWN
 
-static unsigned char hid_keyboard[256] = {
+static const unsigned char hid_keyboard[256] = {
 	  0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
 	 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
 	  4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
@@ -58,7 +58,7 @@ static unsigned char hid_keyboard[256] = {
 	150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
 };
 
-static struct {
+static const struct {
 	__s32 x;
 	__s32 y;
 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};

drivers/usb/input/keyspan_remote.c

@@ -95,7 +95,7 @@ struct usb_keyspan {
  * Currently there are 15 and 17 button models so RESERVED codes
  * are blank areas in the mapping.
  */
-static int keyspan_key_table[] = {
+static const int keyspan_key_table[] = {
 	KEY_RESERVED,		/* 0 is just a place holder. */
 	KEY_RESERVED,
 	KEY_STOP,

drivers/usb/input/xpad.c

@@ -70,7 +70,7 @@
 
 #define XPAD_PKT_LEN 32
 
-static struct xpad_device {
+static const struct xpad_device {
 	u16 idVendor;
 	u16 idProduct;
 	char *name;
@@ -81,13 +81,13 @@ static struct xpad_device {
 	{ 0x0000, 0x0000, "X-Box pad" }
 };
 
-static signed short xpad_btn[] = {
+static const signed short xpad_btn[] = {
 	BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z,	/* "analog" buttons */
 	BTN_START, BTN_BACK, BTN_THUMBL, BTN_THUMBR,	/* start/back/sticks */
 	-1						/* terminating entry */
 };
 
-static signed short xpad_abs[] = {
+static const signed short xpad_abs[] = {
 	ABS_X, ABS_Y,		/* left stick */
 	ABS_RX, ABS_RY,		/* right stick */
 	ABS_Z, ABS_RZ,		/* triggers left/right */

drivers/usb/media/konicawc.c

@@ -77,14 +77,14 @@ static int saturation =	MAX_SATURATION/2;
 static int sharpness =	MAX_SHARPNESS/2;
 static int whitebal =	3*(MAX_WHITEBAL/4);
 
-static int spd_to_iface[] = { 1, 0, 3, 2, 4, 5, 6 };
+static const int spd_to_iface[] = { 1, 0, 3, 2, 4, 5, 6 };
 
 /* These FPS speeds are from the windows config box. They are
  * indexed on size (0-2) and speed (0-6). Divide by 3 to get the
  * real fps.
  */
 
-static int spd_to_fps[][7] = { { 24, 40, 48, 60, 72, 80, 100 },
+static const int spd_to_fps[][7] = { { 24, 40, 48, 60, 72, 80, 100 },
 			       { 24, 40, 48, 60, 72, 80, 100 },
 			       { 18, 30, 36, 45, 54, 60, 75  },
 			       { 6,  10, 12, 15, 18, 21, 25  } };
@@ -95,7 +95,7 @@ struct cam_size {
 	u8	cmd;
 };
 
-static struct cam_size camera_sizes[] = { { 160, 120, 0x7 },
+static const struct cam_size camera_sizes[] = { { 160, 120, 0x7 },
 					  { 160, 136, 0xa },
 					  { 176, 144, 0x4 },
 					  { 320, 240, 0x5 } };

drivers/usb/media/ov511.c

@@ -211,7 +211,7 @@ static struct ov51x_decomp_ops *ov518_mmx_decomp_ops;
 
 /* Number of times to retry a failed I2C transaction. Increase this if you
  * are getting "Failed to read sensor ID..." */
-static int i2c_detect_tries = 5;
+static const int i2c_detect_tries = 5;
 
 /* MMX support is present in kernel and CPU. Checked upon decomp module load. */
 #if defined(__i386__) || defined(__x86_64__)

drivers/usb/media/pwc/pwc-ctrl.c

@@ -109,7 +109,7 @@
 #define PT_RESET_CONTROL_FORMATTER		0x02
 #define PT_STATUS_FORMATTER			0x03
 
-static char *size2name[PSZ_MAX] =
+static const char *size2name[PSZ_MAX] =
 {
 	"subQCIF",
 	"QSIF",

drivers/usb/media/stv680.h

@@ -151,7 +151,7 @@ struct usb_stv {
 };
 
 
-static unsigned char red[256] = { 
+static const unsigned char red[256] = {
 	0, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 
 	18, 18, 18, 18, 18, 18, 18, 25, 30, 35, 38, 42, 
 	44, 47, 50, 53, 54, 57, 59, 61, 63, 65, 67, 69, 
@@ -176,7 +176,7 @@ static unsigned char red[256] = {
 	220, 220, 221, 221 
 }; 
 
-static unsigned char green[256] = {
+static const unsigned char green[256] = {
 	0, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 
 	21, 21, 21, 21, 21, 21, 21, 28, 34, 39, 43, 47, 
 	50, 53, 56, 59, 61, 64, 66, 68, 71, 73, 75, 77, 
@@ -201,7 +201,7 @@ static unsigned char green[256] = {
 	245, 245, 246, 246 
 }; 
 
-static unsigned char blue[256] = {
+static const unsigned char blue[256] = {
 	0, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 
 	23, 23, 23, 23, 23, 23, 23, 30, 37, 42, 47, 51, 
 	55, 58, 61, 64, 67, 70, 72, 74, 78, 80, 82, 84, 

drivers/usb/media/usbvideo.c

@@ -955,7 +955,7 @@ static struct file_operations usbvideo_fops = {
 	.ioctl =  usbvideo_v4l_ioctl,
 	.llseek = no_llseek,
 };
-static struct video_device usbvideo_template = {
+static const struct video_device usbvideo_template = {
 	.owner =      THIS_MODULE,
 	.type =       VID_TYPE_CAPTURE,
 	.hardware =   VID_HARDWARE_CPIA,

drivers/usb/misc/sisusbvga/sisusb.c

@@ -2437,8 +2437,8 @@ sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init)
 	u8 *tempbuf;
 	u16 *tempbufb;
 	size_t written;
-	static char bootstring[] = "SiSUSB VGA text console, (C) 2005 Thomas Winischhofer.";
-	static char bootlogo[] = "(o_ //\\ V_/_";
+	static const char bootstring[] = "SiSUSB VGA text console, (C) 2005 Thomas Winischhofer.";
+	static const char bootlogo[] = "(o_ //\\ V_/_";
 
 	/* sisusb->lock is down */
 

drivers/usb/serial/ftdi_sio.c

@@ -491,7 +491,7 @@ static struct usb_driver ftdi_driver = {
 	.no_dynamic_id = 	1,
 };
 
-static char *ftdi_chip_name[] = {
+static const char *ftdi_chip_name[] = {
 	[SIO] = "SIO",	/* the serial part of FT8U100AX */
 	[FT8U232AM] = "FT8U232AM",
 	[FT232BM] = "FT232BM",

drivers/usb/serial/io_edgeport.c

@@ -184,7 +184,7 @@ struct divisor_table_entry {
 // These assume a 3.6864MHz crystal, the standard /16, and
 // MCR.7 = 0.
 //
-static struct divisor_table_entry divisor_table[] = {
+static const struct divisor_table_entry divisor_table[] = {
 	{   50,		4608},  
 	{   75,		3072},  
 	{   110,	2095},		/* 2094.545455 => 230450   => .0217 % over */

drivers/usb/serial/io_fw_boot2.h

@@ -537,7 +537,7 @@ static unsigned char IMAGE_ARRAY_NAME[] = {
 
 };
 
-static struct edge_firmware_version_info IMAGE_VERSION_NAME = {
+static const struct edge_firmware_version_info IMAGE_VERSION_NAME = {
 	2, 0, 3 };		// Major, Minor, Build
 
 #undef IMAGE_VERSION_NAME

drivers/usb/serial/safe_serial.c

@@ -167,7 +167,7 @@ static struct usb_driver safe_driver = {
 	.no_dynamic_id = 	1,
 };
 
-static __u16 crc10_table[256] = {
+static const __u16 crc10_table[256] = {
 	0x000, 0x233, 0x255, 0x066, 0x299, 0x0aa, 0x0cc, 0x2ff, 0x301, 0x132, 0x154, 0x367, 0x198, 0x3ab, 0x3cd, 0x1fe,
 	0x031, 0x202, 0x264, 0x057, 0x2a8, 0x09b, 0x0fd, 0x2ce, 0x330, 0x103, 0x165, 0x356, 0x1a9, 0x39a, 0x3fc, 0x1cf,
 	0x062, 0x251, 0x237, 0x004, 0x2fb, 0x0c8, 0x0ae, 0x29d, 0x363, 0x150, 0x136, 0x305, 0x1fa, 0x3c9, 0x3af, 0x19c,

drivers/usb/storage/sddr09.c

@@ -237,7 +237,7 @@ static void nand_store_ecc(unsigned char *data, unsigned char *ecc) {
 #define SPARE    0xfffffffe
 #define UNUSABLE 0xfffffffd
 
-static int erase_bad_lba_entries = 0;
+static const int erase_bad_lba_entries = 0;
 
 /* send vendor interface command (0x41) */
 /* called for requests 0, 1, 8 */

drivers/usb/storage/usb.c

@@ -470,7 +470,7 @@ static void get_device_info(struct us_data *us, const struct usb_device_id *id)
 	 * from the unusual_devs.h table.
 	 */
 	if (id->idVendor || id->idProduct) {
-		static char *msgs[3] = {
+		static const char *msgs[3] = {
 			"an unneeded SubClass entry",
 			"an unneeded Protocol entry",
 			"unneeded SubClass and Protocol entries"};