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Subject[PATCH 4.9 112/191] media: dvb_frontend: dtv_property_process_set() cleanups
Date
From: Satendra Singh Thakur <satendra.t@samsung.com>

commit media: dvb_frontend: dtv_property_process_set() cleanups upstream

Since all properties in the func dtv_property_process_set() use
at most 4 bytes arguments, change the code to pass
u32 cmd and u32 data as function arguments, instead of passing a
pointer to the entire struct dtv_property *tvp.

Instead of having a generic dtv_property_dump(), added its own
properties debug logic in the dtv_property_process_set().

Signed-off-by: Satendra Singh Thakur <satendra.t@samsung.com>
Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/dvb-core/dvb_frontend.c | 125 +++++++++++++++-----------
1 file changed, 72 insertions(+), 53 deletions(-)

diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index ca4959bbb6c2f..a9ae9e5092050 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -1088,22 +1088,19 @@ static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
_DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0),
};

-static void dtv_property_dump(struct dvb_frontend *fe,
- bool is_set,
+static void dtv_get_property_dump(struct dvb_frontend *fe,
struct dtv_property *tvp)
{
int i;

if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
- dev_warn(fe->dvb->device, "%s: %s tvp.cmd = 0x%08x undefined\n",
- __func__,
- is_set ? "SET" : "GET",
+ dev_warn(fe->dvb->device, "%s: GET tvp.cmd = 0x%08x undefined\n"
+ , __func__,
tvp->cmd);
return;
}

- dev_dbg(fe->dvb->device, "%s: %s tvp.cmd = 0x%08x (%s)\n", __func__,
- is_set ? "SET" : "GET",
+ dev_dbg(fe->dvb->device, "%s: GET tvp.cmd = 0x%08x (%s)\n", __func__,
tvp->cmd,
dtv_cmds[tvp->cmd].name);

@@ -1513,7 +1510,7 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
return -EINVAL;
}

- dtv_property_dump(fe, false, tvp);
+ dtv_get_property_dump(fe, tvp);

return 0;
}
@@ -1740,16 +1737,36 @@ static int dvbv3_set_delivery_system(struct dvb_frontend *fe)
return emulate_delivery_system(fe, delsys);
}

+/**
+ * dtv_property_process_set - Sets a single DTV property
+ * @fe: Pointer to &struct dvb_frontend
+ * @file: Pointer to &struct file
+ * @cmd: Digital TV command
+ * @data: An unsigned 32-bits number
+ *
+ * This routine assigns the property
+ * value to the corresponding member of
+ * &struct dtv_frontend_properties
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
static int dtv_property_process_set(struct dvb_frontend *fe,
- struct dtv_property *tvp,
- struct file *file)
+ struct file *file,
+ u32 cmd, u32 data)
{
int r = 0;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;

- dtv_property_dump(fe, true, tvp);
-
- switch(tvp->cmd) {
+ /** Dump DTV command name and value*/
+ if (!cmd || cmd > DTV_MAX_COMMAND)
+ dev_warn(fe->dvb->device, "%s: SET cmd 0x%08x undefined\n",
+ __func__, cmd);
+ else
+ dev_dbg(fe->dvb->device,
+ "%s: SET cmd 0x%08x (%s) to 0x%08x\n",
+ __func__, cmd, dtv_cmds[cmd].name, data);
+ switch (cmd) {
case DTV_CLEAR:
/*
* Reset a cache of data specific to the frontend here. This does
@@ -1769,133 +1786,133 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
r = dtv_set_frontend(fe);
break;
case DTV_FREQUENCY:
- c->frequency = tvp->u.data;
+ c->frequency = data;
break;
case DTV_MODULATION:
- c->modulation = tvp->u.data;
+ c->modulation = data;
break;
case DTV_BANDWIDTH_HZ:
- c->bandwidth_hz = tvp->u.data;
+ c->bandwidth_hz = data;
break;
case DTV_INVERSION:
- c->inversion = tvp->u.data;
+ c->inversion = data;
break;
case DTV_SYMBOL_RATE:
- c->symbol_rate = tvp->u.data;
+ c->symbol_rate = data;
break;
case DTV_INNER_FEC:
- c->fec_inner = tvp->u.data;
+ c->fec_inner = data;
break;
case DTV_PILOT:
- c->pilot = tvp->u.data;
+ c->pilot = data;
break;
case DTV_ROLLOFF:
- c->rolloff = tvp->u.data;
+ c->rolloff = data;
break;
case DTV_DELIVERY_SYSTEM:
- r = dvbv5_set_delivery_system(fe, tvp->u.data);
+ r = dvbv5_set_delivery_system(fe, data);
break;
case DTV_VOLTAGE:
- c->voltage = tvp->u.data;
+ c->voltage = data;
r = dvb_frontend_handle_ioctl(file, FE_SET_VOLTAGE,
(void *)c->voltage);
break;
case DTV_TONE:
- c->sectone = tvp->u.data;
+ c->sectone = data;
r = dvb_frontend_handle_ioctl(file, FE_SET_TONE,
(void *)c->sectone);
break;
case DTV_CODE_RATE_HP:
- c->code_rate_HP = tvp->u.data;
+ c->code_rate_HP = data;
break;
case DTV_CODE_RATE_LP:
- c->code_rate_LP = tvp->u.data;
+ c->code_rate_LP = data;
break;
case DTV_GUARD_INTERVAL:
- c->guard_interval = tvp->u.data;
+ c->guard_interval = data;
break;
case DTV_TRANSMISSION_MODE:
- c->transmission_mode = tvp->u.data;
+ c->transmission_mode = data;
break;
case DTV_HIERARCHY:
- c->hierarchy = tvp->u.data;
+ c->hierarchy = data;
break;
case DTV_INTERLEAVING:
- c->interleaving = tvp->u.data;
+ c->interleaving = data;
break;

/* ISDB-T Support here */
case DTV_ISDBT_PARTIAL_RECEPTION:
- c->isdbt_partial_reception = tvp->u.data;
+ c->isdbt_partial_reception = data;
break;
case DTV_ISDBT_SOUND_BROADCASTING:
- c->isdbt_sb_mode = tvp->u.data;
+ c->isdbt_sb_mode = data;
break;
case DTV_ISDBT_SB_SUBCHANNEL_ID:
- c->isdbt_sb_subchannel = tvp->u.data;
+ c->isdbt_sb_subchannel = data;
break;
case DTV_ISDBT_SB_SEGMENT_IDX:
- c->isdbt_sb_segment_idx = tvp->u.data;
+ c->isdbt_sb_segment_idx = data;
break;
case DTV_ISDBT_SB_SEGMENT_COUNT:
- c->isdbt_sb_segment_count = tvp->u.data;
+ c->isdbt_sb_segment_count = data;
break;
case DTV_ISDBT_LAYER_ENABLED:
- c->isdbt_layer_enabled = tvp->u.data;
+ c->isdbt_layer_enabled = data;
break;
case DTV_ISDBT_LAYERA_FEC:
- c->layer[0].fec = tvp->u.data;
+ c->layer[0].fec = data;
break;
case DTV_ISDBT_LAYERA_MODULATION:
- c->layer[0].modulation = tvp->u.data;
+ c->layer[0].modulation = data;
break;
case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
- c->layer[0].segment_count = tvp->u.data;
+ c->layer[0].segment_count = data;
break;
case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
- c->layer[0].interleaving = tvp->u.data;
+ c->layer[0].interleaving = data;
break;
case DTV_ISDBT_LAYERB_FEC:
- c->layer[1].fec = tvp->u.data;
+ c->layer[1].fec = data;
break;
case DTV_ISDBT_LAYERB_MODULATION:
- c->layer[1].modulation = tvp->u.data;
+ c->layer[1].modulation = data;
break;
case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
- c->layer[1].segment_count = tvp->u.data;
+ c->layer[1].segment_count = data;
break;
case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
- c->layer[1].interleaving = tvp->u.data;
+ c->layer[1].interleaving = data;
break;
case DTV_ISDBT_LAYERC_FEC:
- c->layer[2].fec = tvp->u.data;
+ c->layer[2].fec = data;
break;
case DTV_ISDBT_LAYERC_MODULATION:
- c->layer[2].modulation = tvp->u.data;
+ c->layer[2].modulation = data;
break;
case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
- c->layer[2].segment_count = tvp->u.data;
+ c->layer[2].segment_count = data;
break;
case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
- c->layer[2].interleaving = tvp->u.data;
+ c->layer[2].interleaving = data;
break;

/* Multistream support */
case DTV_STREAM_ID:
case DTV_DVBT2_PLP_ID_LEGACY:
- c->stream_id = tvp->u.data;
+ c->stream_id = data;
break;

/* ATSC-MH */
case DTV_ATSCMH_PARADE_ID:
- fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
+ fe->dtv_property_cache.atscmh_parade_id = data;
break;
case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
- fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
+ fe->dtv_property_cache.atscmh_rs_frame_ensemble = data;
break;

case DTV_LNA:
- c->lna = tvp->u.data;
+ c->lna = data;
if (fe->ops.set_lna)
r = fe->ops.set_lna(fe);
if (r < 0)
@@ -2122,7 +2139,9 @@ static int dvb_frontend_handle_ioctl(struct file *file,
return PTR_ERR(tvp);

for (i = 0; i < tvps->num; i++) {
- err = dtv_property_process_set(fe, tvp + i, file);
+ err = dtv_property_process_set(fe, file,
+ (tvp + i)->cmd,
+ (tvp + i)->u.data);
if (err < 0) {
kfree(tvp);
return err;
--
2.25.1
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