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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-08-26 09:18:16 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-08-27 15:46:42 +0300 |
| commit | 5af478341fa3b2c35a7062ad80581751bf388977 (patch) | |
| tree | 20b17fca1433b4d25f1c562d869ce024e05ab047 /drivers/media | |
| parent | cd3bef00c2528666c30a71c0cc9175721db9f9d1 (diff) | |
| download | linux-5af478341fa3b2c35a7062ad80581751bf388977.tar.xz | |
media: dib9000: delete some unused broken code
The dib9000_remove_slave_frontend() function isn't used.
I was reviewing it because my static checker claims it writes one
element beyond the end of the array. That's a false positive. What it
actually does is, if there are two or more front ends, then it prints a
debug message to say that it removed the first one, stored in
state->fe[1], and then it "removes" (scare quotes on purpose) the second
one, stored in state->fe[2]. Deleting a front end from the middle is
not really supported and breaks code like dib9000_release() which
assumes the first NULL front end marks the end of the list.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb-frontends/dib9000.c | 18 | ||||
| -rw-r--r-- | drivers/media/dvb-frontends/dib9000.h | 7 |
2 files changed, 0 insertions, 25 deletions
diff --git a/drivers/media/dvb-frontends/dib9000.c b/drivers/media/dvb-frontends/dib9000.c index 17c6f15c7e68..1b7a4331af05 100644 --- a/drivers/media/dvb-frontends/dib9000.c +++ b/drivers/media/dvb-frontends/dib9000.c @@ -2462,24 +2462,6 @@ int dib9000_set_slave_frontend(struct dvb_frontend *fe, struct dvb_frontend *fe_ } EXPORT_SYMBOL(dib9000_set_slave_frontend); -int dib9000_remove_slave_frontend(struct dvb_frontend *fe) -{ - struct dib9000_state *state = fe->demodulator_priv; - u8 index_frontend = 1; - - while ((index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL)) - index_frontend++; - if (index_frontend != 1) { - dprintk("remove slave fe %p (index %i)\n", state->fe[index_frontend - 1], index_frontend - 1); - state->fe[index_frontend] = NULL; - return 0; - } - - dprintk("no frontend to be removed\n"); - return -ENODEV; -} -EXPORT_SYMBOL(dib9000_remove_slave_frontend); - struct dvb_frontend *dib9000_get_slave_frontend(struct dvb_frontend *fe, int slave_index) { struct dib9000_state *state = fe->demodulator_priv; diff --git a/drivers/media/dvb-frontends/dib9000.h b/drivers/media/dvb-frontends/dib9000.h index b10a70aa7c9f..40883b41e66b 100644 --- a/drivers/media/dvb-frontends/dib9000.h +++ b/drivers/media/dvb-frontends/dib9000.h @@ -37,7 +37,6 @@ extern int dib9000_fw_pid_filter_ctrl(struct dvb_frontend *fe, u8 onoff); extern int dib9000_fw_pid_filter(struct dvb_frontend *fe, u8 id, u16 pid, u8 onoff); extern int dib9000_firmware_post_pll_init(struct dvb_frontend *fe); extern int dib9000_set_slave_frontend(struct dvb_frontend *fe, struct dvb_frontend *fe_slave); -extern int dib9000_remove_slave_frontend(struct dvb_frontend *fe); extern struct dvb_frontend *dib9000_get_slave_frontend(struct dvb_frontend *fe, int slave_index); extern struct i2c_adapter *dib9000_get_component_bus_interface(struct dvb_frontend *fe); extern int dib9000_set_i2c_adapter(struct dvb_frontend *fe, struct i2c_adapter *i2c); @@ -97,12 +96,6 @@ static inline int dib9000_set_slave_frontend(struct dvb_frontend *fe, struct dvb return -ENODEV; } -static inline int dib9000_remove_slave_frontend(struct dvb_frontend *fe) -{ - printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); - return -ENODEV; -} - static inline struct dvb_frontend *dib9000_get_slave_frontend(struct dvb_frontend *fe, int slave_index) { printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); |