dw2102_properties et al refer to entries in the USB-id table using
hard-coded indices, as in "&dw2102_table[6]", which means adding new
entries before the end of the list has the potential to introduce bugs
in code elsewhere in the file.
Use C99-style initializers with symbolic names for each index to avoid
this. This way, other device tables wanting to reuse the USB ids can
use expressions like "&dw2102_table[TEVII_S630]" that do not change as
the entries in the table are reordered.
Signed-off-by: Jonathan Nieder <jrnie...@gmail.com>
---
Patrick Boettcher wrote:
> Due to the use of the reference in the USB-id table adding the new set at
> the end of the list is actually the best way. Adding them in the middle will
> cause a lot of changes and bugs.
Good catch. That seems like an accident waiting to happen. How about
something like this (untested)?
drivers/media/dvb/dvb-usb/dw2102.c | 78 ++++++++++++++++++++++--------------
1 files changed, 48 insertions(+), 30 deletions(-)
diff --git a/drivers/media/dvb/dvb-usb/dw2102.c
b/drivers/media/dvb/dvb-usb/dw2102.c
index 64add7cb1fd3..9a1863dc7232 100644
--- a/drivers/media/dvb/dvb-usb/dw2102.c
+++ b/drivers/media/dvb/dvb-usb/dw2102.c
@@ -1435,22 +1435,40 @@ static int dw2102_rc_query(struct dvb_usb_device *d,
u32 *event, int *state)
return 0;
}
+enum dw2102_table_entry {
+ CYPRESS_DW2102,
+ CYPRESS_DW2101,
+ CYPRESS_DW2104,
+ TEVII_S650,
+ TERRATEC_CINERGY_S,
+ CYPRESS_DW3101,
+ TEVII_S630,
+ PROF_1100,
+ TEVII_S660,
+ PROF_7500,
+ GENIATECH_SU3000,
+ TERRATEC_CINERGY_S2,
+ TEVII_S480_1,
+ TEVII_S480_2,
+ X3M_SPC1400HD,
+};
+
static struct usb_device_id dw2102_table[] = {
- {USB_DEVICE(USB_VID_CYPRESS, USB_PID_DW2102)},
- {USB_DEVICE(USB_VID_CYPRESS, 0x2101)},
- {USB_DEVICE(USB_VID_CYPRESS, USB_PID_DW2104)},
- {USB_DEVICE(0x9022, USB_PID_TEVII_S650)},
- {USB_DEVICE(USB_VID_TERRATEC, USB_PID_CINERGY_S)},
- {USB_DEVICE(USB_VID_CYPRESS, USB_PID_DW3101)},
- {USB_DEVICE(0x9022, USB_PID_TEVII_S630)},
- {USB_DEVICE(0x3011, USB_PID_PROF_1100)},
- {USB_DEVICE(0x9022, USB_PID_TEVII_S660)},
- {USB_DEVICE(0x3034, 0x7500)},
- {USB_DEVICE(0x1f4d, 0x3000)},
- {USB_DEVICE(USB_VID_TERRATEC, 0x00a8)},
- {USB_DEVICE(0x9022, USB_PID_TEVII_S480_1)},
- {USB_DEVICE(0x9022, USB_PID_TEVII_S480_2)},
- {USB_DEVICE(0x1f4d, 0x3100)},
+ [CYPRESS_DW2102] = {USB_DEVICE(USB_VID_CYPRESS, USB_PID_DW2102)},
+ [CYPRESS_DW2101] = {USB_DEVICE(USB_VID_CYPRESS, 0x2101)},
+ [CYPRESS_DW2104] = {USB_DEVICE(USB_VID_CYPRESS, USB_PID_DW2104)},
+ [TEVII_S650] = {USB_DEVICE(0x9022, USB_PID_TEVII_S650)},
+ [TERRATEC_CINERGY_S] = {USB_DEVICE(USB_VID_TERRATEC,
USB_PID_CINERGY_S)},
+ [CYPRESS_DW3101] = {USB_DEVICE(USB_VID_CYPRESS, USB_PID_DW3101)},
+ [TEVII_S630] = {USB_DEVICE(0x9022, USB_PID_TEVII_S630)},
+ [PROF_1100] = {USB_DEVICE(0x3011, USB_PID_PROF_1100)},
+ [TEVII_S660] = {USB_DEVICE(0x9022, USB_PID_TEVII_S660)},
+ [PROF_7500] = {USB_DEVICE(0x3034, 0x7500)},
+ [GENIATECH_SU3000] = {USB_DEVICE(0x1f4d, 0x3000)},
+ [TERRATEC_CINERGY_S2] = {USB_DEVICE(USB_VID_TERRATEC, 0x00a8)},
+ [TEVII_S480_1] = {USB_DEVICE(0x9022, USB_PID_TEVII_S480_1)},
+ [TEVII_S480_2] = {USB_DEVICE(0x9022, USB_PID_TEVII_S480_2)},
+ [X3M_SPC1400HD] = {USB_DEVICE(0x1f4d, 0x3100)},
{ }
};
@@ -1610,15 +1628,15 @@ static struct dvb_usb_device_properties
dw2102_properties = {
.num_device_descs = 3,
.devices = {
{"DVBWorld DVB-S 2102 USB2.0",
- {&dw2102_table[0], NULL},
+ {&dw2102_table[CYPRESS_DW2102], NULL},
{NULL},
},
{"DVBWorld DVB-S 2101 USB2.0",
- {&dw2102_table[1], NULL},
+ {&dw2102_table[CYPRESS_DW2101], NULL},
{NULL},
},
{"TerraTec Cinergy S USB",
- {&dw2102_table[4], NULL},
+ {&dw2102_table[TERRATEC_CINERGY_S], NULL},
{NULL},
},
}
@@ -1664,11 +1682,11 @@ static struct dvb_usb_device_properties
dw2104_properties = {
.num_device_descs = 2,
.devices = {
{ "DVBWorld DW2104 USB2.0",
- {&dw2102_table[2], NULL},
+ {&dw2102_table[CYPRESS_DW2104], NULL},
{NULL},
},
{ "TeVii S650 USB2.0",
- {&dw2102_table[3], NULL},
+ {&dw2102_table[TEVII_S650], NULL},
{NULL},
},
}
@@ -1715,7 +1733,7 @@ static struct dvb_usb_device_properties dw3101_properties
= {
.num_device_descs = 1,
.devices = {
{ "DVBWorld DVB-C 3101 USB2.0",
- {&dw2102_table[5], NULL},
+ {&dw2102_table[CYPRESS_DW3101], NULL},
{NULL},
},
}
@@ -1761,7 +1779,7 @@ static struct dvb_usb_device_properties s6x0_properties =
{
.num_device_descs = 1,
.devices = {
{"TeVii S630 USB",
- {&dw2102_table[6], NULL},
+ {&dw2102_table[TEVII_S630], NULL},
{NULL},
},
}
@@ -1770,33 +1788,33 @@ static struct dvb_usb_device_properties s6x0_properties
= {
struct dvb_usb_device_properties *p1100;
static struct dvb_usb_device_description d1100 = {
"Prof 1100 USB ",
- {&dw2102_table[7], NULL},
+ {&dw2102_table[PROF_1100], NULL},
{NULL},
};
struct dvb_usb_device_properties *s660;
static struct dvb_usb_device_description d660 = {
"TeVii S660 USB",
- {&dw2102_table[8], NULL},
+ {&dw2102_table[TEVII_S660], NULL},
{NULL},
};
static struct dvb_usb_device_description d480_1 = {
"TeVii S480.1 USB",
- {&dw2102_table[12], NULL},
+ {&dw2102_table[TEVII_S480_1], NULL},
{NULL},
};
static struct dvb_usb_device_description d480_2 = {
"TeVii S480.2 USB",
- {&dw2102_table[13], NULL},
+ {&dw2102_table[TEVII_S480_2], NULL},
{NULL},
};
struct dvb_usb_device_properties *p7500;
static struct dvb_usb_device_description d7500 = {
"Prof 7500 USB DVB-S2",
- {&dw2102_table[9], NULL},
+ {&dw2102_table[PROF_7500], NULL},
{NULL},
};
@@ -1842,15 +1860,15 @@ static struct dvb_usb_device_properties
su3000_properties = {
.num_device_descs = 3,
.devices = {
{ "SU3000HD DVB-S USB2.0",
- { &dw2102_table[10], NULL },
+ { &dw2102_table[GENIATECH_SU3000], NULL },
{ NULL },
},
{ "Terratec Cinergy S2 USB HD",
- { &dw2102_table[11], NULL },
+ { &dw2102_table[TERRATEC_CINERGY_S2], NULL },
{ NULL },
},
{ "X3M TV SPC1400HD PCI",
- { &dw2102_table[14], NULL },
+ { &dw2102_table[X3M_SPC1400HD], NULL },
{ NULL },
},
}
--
1.7.8
--
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