media: dvb-usb: Constify struct usb_device_id

'struct usb_device_id' is not modified in these drivers.

Constifying this structure moves some data to a read-only section, so
increase overall security.

In order to do that, struct dvb_usb_device_description (in dvb-usb.h) also
needs to be updated.

On a x86_64, with allmodconfig, as an example:
Before:
======
text data bss dec hex filename
1983 4240 4 6227 1853 drivers/media/usb/dvb-usb/a800.o

After:
=====
text data bss dec hex filename
2079 4144 4 6227 1853 drivers/media/usb/dvb-usb/a800.o

Signed-off-by: Christophe JAILLET <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/usb/dvb-usb/a800.c

···
 	AVERMEDIA_DVBT_USB2_WARM,
 };
 
-static struct usb_device_id a800_table[] = {
+static const struct usb_device_id a800_table[] = {
 	DVB_USB_DEV(AVERMEDIA, AVERMEDIA_DVBT_USB2_COLD),
 	DVB_USB_DEV(AVERMEDIA, AVERMEDIA_DVBT_USB2_WARM),
 	{ }

drivers/media/usb/dvb-usb/af9005.c

···
 	ANSONIC_DVBT_USB,
 };
 
-static struct usb_device_id af9005_usb_table[] = {
+static const struct usb_device_id af9005_usb_table[] = {
 	DVB_USB_DEV(AFATECH, AFATECH_AF9005),
 	DVB_USB_DEV(TERRATEC, TERRATEC_CINERGY_T_USB_XE),
 	DVB_USB_DEV(ANSONIC, ANSONIC_DVBT_USB),

drivers/media/usb/dvb-usb/az6027.c

···
 	ELGATO_EYETV_SAT_V3,
 };
 
-static struct usb_device_id az6027_usb_table[] = {
+static const struct usb_device_id az6027_usb_table[] = {
 	DVB_USB_DEV(AZUREWAVE, AZUREWAVE_AZ6027),
 	DVB_USB_DEV(TERRATEC, TERRATEC_DVBS2CI_V1),
 	DVB_USB_DEV(TERRATEC, TERRATEC_DVBS2CI_V2),

drivers/media/usb/dvb-usb/cinergyT2-core.c

···
 	TERRATEC_CINERGY_T2,
 };
 
-static struct usb_device_id cinergyt2_usb_table[] = {
+static const struct usb_device_id cinergyt2_usb_table[] = {
 	DVB_USB_DEV(TERRATEC, TERRATEC_CINERGY_T2),
 	{ }
 };

drivers/media/usb/dvb-usb/cxusb.c

···
 	NR__cxusb_table_index
 };
 
-static struct usb_device_id cxusb_table[];
+static const struct usb_device_id cxusb_table[];
 
 int cxusb_ctrl_msg(struct dvb_usb_device *d,
 		   u8 cmd, const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
···
 	dvb_usb_device_exit(intf);
 }
 
-static struct usb_device_id cxusb_table[] = {
+static const struct usb_device_id cxusb_table[] = {
 	DVB_USB_DEV(MEDION, MEDION_MD95700),
 	DVB_USB_DEV(DVICO, DVICO_BLUEBIRD_LG064F_COLD),
 	DVB_USB_DEV(DVICO, DVICO_BLUEBIRD_LG064F_WARM),

drivers/media/usb/dvb-usb/dibusb-mb.c

···
 	ULTIMA_TVBOX_ANCHOR_COLD,
 };
 
-static struct usb_device_id dibusb_dib3000mb_table[] = {
+static const struct usb_device_id dibusb_dib3000mb_table[] = {
 	DVB_USB_DEV(WIDEVIEW, WIDEVIEW_DVBT_USB_COLD),
 	DVB_USB_DEV(WIDEVIEW, WIDEVIEW_DVBT_USB_WARM),
 	DVB_USB_DEV(COMPRO, COMPRO_DVBU2000_COLD),

drivers/media/usb/dvb-usb/dibusb-mc.c

···
 	HUMAX_DVB_T_STICK_HIGH_SPEED_WARM,
 };
 
-static struct usb_device_id dibusb_dib3000mc_table[] = {
+static const struct usb_device_id dibusb_dib3000mc_table[] = {
 	DVB_USB_DEV(DIBCOM, DIBCOM_MOD3001_COLD),
 	DVB_USB_DEV(DIBCOM, DIBCOM_MOD3001_WARM),
 	DVB_USB_DEV(ULTIMA_ELECTRONIC, ULTIMA_TVBOX_USB2_COLD),

drivers/media/usb/dvb-usb/digitv.c

···
 	ANCHOR_NEBULA_DIGITV,
 };
 
-static struct usb_device_id digitv_table[] = {
+static const struct usb_device_id digitv_table[] = {
 	DVB_USB_DEV(ANCHOR, ANCHOR_NEBULA_DIGITV),
 	{ }
 };

drivers/media/usb/dvb-usb/dtt200u.c

···
 	MIGLIA_WT220U_ZAP250_COLD,
 };
 
-static struct usb_device_id dtt200u_usb_table[] = {
+static const struct usb_device_id dtt200u_usb_table[] = {
 	DVB_USB_DEV(WIDEVIEW, WIDEVIEW_DTT200U_COLD),
 	DVB_USB_DEV(WIDEVIEW, WIDEVIEW_DTT200U_WARM),
 	DVB_USB_DEV(WIDEVIEW, WIDEVIEW_WT220U_COLD),

drivers/media/usb/dvb-usb/dtv5100.c

···
 	AME_DTV5100,
 };
 
-static struct usb_device_id dtv5100_table[] = {
+static const struct usb_device_id dtv5100_table[] = {
 	DVB_USB_DEV(AME, AME_DTV5100),
 	{ }
 };

drivers/media/usb/dvb-usb/dvb-usb.h

···
 	const char *name;
 
 #define DVB_USB_ID_MAX_NUM 15
-	struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
-	struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
+	const struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
+	const struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
 };
 
 static inline u8 rc5_custom(struct rc_map_table *key)

drivers/media/usb/dvb-usb/dw2102.c

···
 	TEVII_S662
 };
 
-static struct usb_device_id dw2102_table[] = {
+static const struct usb_device_id dw2102_table[] = {
 	DVB_USB_DEV(CYPRESS, CYPRESS_DW2102),
 	DVB_USB_DEV(CYPRESS, CYPRESS_DW2101),
 	DVB_USB_DEV(CYPRESS, CYPRESS_DW2104),

drivers/media/usb/dvb-usb/gp8psk.c

···
 	GENPIX_SKYWALKER_CW3K,
 };
 
-static struct usb_device_id gp8psk_usb_table[] = {
+static const struct usb_device_id gp8psk_usb_table[] = {
 	DVB_USB_DEV(GENPIX, GENPIX_8PSK_REV_1_COLD),
 	DVB_USB_DEV(GENPIX, GENPIX_8PSK_REV_1_WARM),
 	DVB_USB_DEV(GENPIX, GENPIX_8PSK_REV_2),

drivers/media/usb/dvb-usb/m920x.c

···
 	AZUREWAVE_TWINHAN_VP7049,
 };
 
-static struct usb_device_id m920x_table[] = {
+static const struct usb_device_id m920x_table[] = {
 	DVB_USB_DEV(MSI, MSI_MEGASKY580),
 	DVB_USB_DEV(ANUBIS_ELECTRONIC, ANUBIS_MSI_DIGI_VOX_MINI_II),
 	DVB_USB_DEV(ANUBIS_ELECTRONIC, ANUBIS_LIFEVIEW_TV_WALKER_TWIN_COLD),

drivers/media/usb/dvb-usb/nova-t-usb2.c

···
 	HAUPPAUGE_WINTV_NOVA_T_USB2_WARM,
 };
 
-static struct usb_device_id nova_t_table[] = {
+static const struct usb_device_id nova_t_table[] = {
 	DVB_USB_DEV(HAUPPAUGE, HAUPPAUGE_WINTV_NOVA_T_USB2_COLD),
 	DVB_USB_DEV(HAUPPAUGE, HAUPPAUGE_WINTV_NOVA_T_USB2_WARM),
 	{ }

drivers/media/usb/dvb-usb/opera1.c

···
 	OPERA1_WARM,
 };
 
-static struct usb_device_id opera1_table[] = {
+static const struct usb_device_id opera1_table[] = {
 	DVB_USB_DEV(CYPRESS, CYPRESS_OPERA1_COLD),
 	DVB_USB_DEV(OPERA1, OPERA1_WARM),
 	{ }

drivers/media/usb/dvb-usb/pctv452e.c

···
 
 static int pctv452e_frontend_attach(struct dvb_usb_adapter *a)
 {
-	struct usb_device_id *id;
+	const struct usb_device_id *id;
 
 	a->fe_adap[0].fe = dvb_attach(stb0899_attach, &stb0899_config,
 						&a->dev->i2c_adap);
···
 	TECHNOTREND_CONNECT_S2_3650_CI,
 };
 
-static struct usb_device_id pctv452e_usb_table[] = {
+static const struct usb_device_id pctv452e_usb_table[] = {
 	DVB_USB_DEV(PINNACLE, PINNACLE_PCTV_452E),
 	DVB_USB_DEV(TECHNOTREND, TECHNOTREND_CONNECT_S2_3600),
 	DVB_USB_DEV(TECHNOTREND, TECHNOTREND_CONNECT_S2_3650_CI),

drivers/media/usb/dvb-usb/technisat-usb2.c

···
 	TECHNISAT_USB2_DVB_S2,
 };
 
-static struct usb_device_id technisat_usb2_id_table[] = {
+static const struct usb_device_id technisat_usb2_id_table[] = {
 	DVB_USB_DEV(TECHNISAT, TECHNISAT_USB2_DVB_S2),
 	{ }
 };

drivers/media/usb/dvb-usb/ttusb2.c

···
 	TECHNOTREND_CONNECT_S2400_8KEEPROM,
 };
 
-static struct usb_device_id ttusb2_table[] = {
+static const struct usb_device_id ttusb2_table[] = {
 	DVB_USB_DEV(PINNACLE, PINNACLE_PCTV_400E),
 	DVB_USB_DEV(PINNACLE, PINNACLE_PCTV_450E),
 	DVB_USB_DEV(TECHNOTREND, TECHNOTREND_CONNECT_S2400),

drivers/media/usb/dvb-usb/umt-010.c

···
 	HANFTEK_UMT_010_WARM,
 };
 
-static struct usb_device_id umt_table[] = {
+static const struct usb_device_id umt_table[] = {
 	DVB_USB_DEV(HANFTEK, HANFTEK_UMT_010_COLD),
 	DVB_USB_DEV(HANFTEK, HANFTEK_UMT_010_WARM),
 	{ }

drivers/media/usb/dvb-usb/vp702x.c

···
 	VISIONPLUS_VP7020_WARM,
 };
 
-static struct usb_device_id vp702x_usb_table[] = {
+static const struct usb_device_id vp702x_usb_table[] = {
 	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_VP7021_COLD),
 //	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_VP7020_COLD),
 //	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_VP7020_WARM),

drivers/media/usb/dvb-usb/vp7045.c

···
 	VISIONPLUS_TINYUSB2_WARM,
 };
 
-static struct usb_device_id vp7045_usb_table[] = {
+static const struct usb_device_id vp7045_usb_table[] = {
 	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_VP7045_COLD),
 	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_VP7045_WARM),
 	DVB_USB_DEV(VISIONPLUS, VISIONPLUS_TINYUSB2_COLD),