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-rw-r--r--drivers/media/dvb/dvb-core/dvb_frontend.c26
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index f50ca7292a7..0cb6c09719f 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -72,6 +72,7 @@ MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open(
#define FESTATE_ZIGZAG_FAST 32
#define FESTATE_ZIGZAG_SLOW 64
#define FESTATE_DISEQC 128
+#define FESTATE_ERROR 256
#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
@@ -269,6 +270,7 @@ static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wra
{
int autoinversion;
int ready = 0;
+ int fe_set_err = 0;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
int original_inversion = fepriv->parameters.inversion;
u32 original_frequency = fepriv->parameters.frequency;
@@ -345,7 +347,11 @@ static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wra
if (autoinversion)
fepriv->parameters.inversion = fepriv->inversion;
if (fe->ops.set_frontend)
- fe->ops.set_frontend(fe, &fepriv->parameters);
+ fe_set_err = fe->ops.set_frontend(fe, &fepriv->parameters);
+ if (fe_set_err < 0) {
+ fepriv->state = FESTATE_ERROR;
+ return fe_set_err;
+ }
fepriv->parameters.frequency = original_frequency;
fepriv->parameters.inversion = original_inversion;
@@ -357,6 +363,7 @@ static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wra
static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
{
fe_status_t s = 0;
+ int retval = 0;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
/* if we've got no parameters, just keep idling */
@@ -370,8 +377,12 @@ static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
if (fepriv->state & FESTATE_RETUNE) {
if (fe->ops.set_frontend)
- fe->ops.set_frontend(fe, &fepriv->parameters);
- fepriv->state = FESTATE_TUNED;
+ retval = fe->ops.set_frontend(fe,
+ &fepriv->parameters);
+ if (retval < 0)
+ fepriv->state = FESTATE_ERROR;
+ else
+ fepriv->state = FESTATE_TUNED;
}
fepriv->delay = 3*HZ;
fepriv->quality = 0;
@@ -449,7 +460,11 @@ static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
fepriv->delay = fepriv->min_delay;
/* peform a tune */
- if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) {
+ retval = dvb_frontend_swzigzag_autotune(fe,
+ fepriv->check_wrapped);
+ if (retval < 0) {
+ return;
+ } else if (retval) {
/* OK, if we've run out of trials at the fast speed.
* Drop back to slow for the _next_ attempt */
fepriv->state = FESTATE_SEARCHING_SLOW;
@@ -1499,7 +1514,8 @@ static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
/* if retune was requested but hasn't occured yet, prevent
* that user get signal state from previous tuning */
- if(fepriv->state == FESTATE_RETUNE) {
+ if (fepriv->state == FESTATE_RETUNE ||
+ fepriv->state == FESTATE_ERROR) {
err=0;
*status = 0;
break;