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V4L/DVB (7398): Adds an error if priv argument of tuner_callback is NULL

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Adds a consistency check to avoid OOPS, if tuner_callback priv argument is
NULL. Also, simplifies callback codes on cx88.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab 2008-04-22 14:46:10 -03:00
parent 0fea03fbd3
commit 0be51b4671
2 changed files with 32 additions and 26 deletions
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55
drivers/media/video/cx88/cx88-cards.c
View file

@ -2090,11 +2090,9 @@ static void gdi_eeprom(struct cx88_core *core, u8 *eeprom_data)
/* ------------------------------------------------------------------- */
/* some Divco specific stuff */
static int cx88_dvico_xc2028_callback(void *priv, int command, int arg)
static int cx88_dvico_xc2028_callback(struct cx88_core *core,
int command, int arg)
{
struct i2c_algo_bit_data *i2c_algo = priv;
struct cx88_core *core = i2c_algo->data;
switch (command) {
case XC2028_TUNER_RESET:
cx_write(MO_GP0_IO, 0x101000);
@ -2112,11 +2110,9 @@ static int cx88_dvico_xc2028_callback(void *priv, int command, int arg)
/* ----------------------------------------------------------------------- */
/* some Geniatech specific stuff */
static int cx88_xc3028_geniatech_tuner_callback(void *priv, int command, int mode)
static int cx88_xc3028_geniatech_tuner_callback(struct cx88_core *core,
int command, int mode)
{
struct i2c_algo_bit_data *i2c_algo = priv;
struct cx88_core *core = i2c_algo->data;
switch (command) {
case XC2028_TUNER_RESET:
switch (INPUT(core->input).type) {
@ -2143,11 +2139,9 @@ static int cx88_xc3028_geniatech_tuner_callback(void *priv, int command, int mod
/* ------------------------------------------------------------------- */
/* some Divco specific stuff */
static int cx88_pv_8000gt_callback(void *priv, int command, int arg)
static int cx88_pv_8000gt_callback(struct cx88_core *core,
int command, int arg)
{
struct i2c_algo_bit_data *i2c_algo = priv;
struct cx88_core *core = i2c_algo->data;
switch (command) {
case XC2028_TUNER_RESET:
cx_write(MO_GP2_IO, 0xcf7);
@ -2198,21 +2192,20 @@ static void dvico_fusionhdtv_hybrid_init(struct cx88_core *core)
}
}
static int cx88_xc2028_tuner_callback(void *priv, int command, int arg)
static int cx88_xc2028_tuner_callback(struct cx88_core *core,
int command, int arg)
{
struct i2c_algo_bit_data *i2c_algo = priv;
struct cx88_core *core = i2c_algo->data;
/* Board-specific callbacks */
switch (core->boardnr) {
case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
case CX88_BOARD_GENIATECH_X8000_MT:
return cx88_xc3028_geniatech_tuner_callback(priv, command, arg);
return cx88_xc3028_geniatech_tuner_callback(core,
command, arg);
case CX88_BOARD_PROLINK_PV_8000GT:
return cx88_pv_8000gt_callback(priv, command, arg);
return cx88_pv_8000gt_callback(core, command, arg);
case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T_PRO:
return cx88_dvico_xc2028_callback(priv, command, arg);
return cx88_dvico_xc2028_callback(core, command, arg);
}
switch (command) {
@ -2246,11 +2239,9 @@ static int cx88_xc2028_tuner_callback(void *priv, int command, int arg)
* PCTV HD 800i with an xc5000 sillicon tuner. This is used for both *
* analog tuner attach (tuner-core.c) and dvb tuner attach (cx88-dvb.c) */
static int cx88_xc5000_tuner_callback(void *priv, int command, int arg)
static int cx88_xc5000_tuner_callback(struct cx88_core *core,
int command, int arg)
{
struct i2c_algo_bit_data *i2c_algo = priv;
struct cx88_core *core = i2c_algo->data;
switch (core->boardnr) {
case CX88_BOARD_PINNACLE_PCTV_HD_800i:
if (command == 0) { /* This is the reset command from xc5000 */
@ -2284,15 +2275,27 @@ static int cx88_xc5000_tuner_callback(void *priv, int command, int arg)
int cx88_tuner_callback(void *priv, int command, int arg)
{
struct i2c_algo_bit_data *i2c_algo = priv;
struct cx88_core *core = i2c_algo->data;
struct cx88_core *core;
if (!i2c_algo) {
printk(KERN_ERR "cx88: Error - i2c private data undefined.\n");
return -EINVAL;
}
core = i2c_algo->data;
if (!core) {
printk(KERN_ERR "cx88: Error - device struct undefined.\n");
return -EINVAL;
}
switch (core->board.tuner_type) {
case TUNER_XC2028:
info_printk(core, "Calling XC2028/3028 callback\n");
return cx88_xc2028_tuner_callback(priv, command, arg);
return cx88_xc2028_tuner_callback(core, command, arg);
case TUNER_XC5000:
info_printk(core, "Calling XC5000 callback\n");
return cx88_xc5000_tuner_callback(priv, command, arg);
return cx88_xc5000_tuner_callback(core, command, arg);
}
err_printk(core, "Error: Calling callback for tuner %d\n",
core->board.tuner_type);

3
drivers/media/video/saa7134/saa7134-cards.c
View file

@ -5266,6 +5266,9 @@ int saa7134_tuner_callback(void *priv, int command, int arg)
case TUNER_XC2028:
return saa7134_xc2028_callback(dev, command, arg);
}
} else {
printk(KERN_ERR "saa7134: Error - device struct undefined.\n");
return -EINVAL;
}
return -EINVAL;
}