[media] mb86a20s: Use a macro for the number of layers
Instead of using the magic number "3", use NUM_LAYERS macro
on all places that are related to the ISDB-T layers.
This makes the source code a little more readable.
No functional changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c
index d04b52e..80a8ee0 100644
--- a/drivers/media/dvb-frontends/mb86a20s.c
+++ b/drivers/media/dvb-frontends/mb86a20s.c
@@ -20,6 +20,8 @@
#include "dvb_frontend.h"
#include "mb86a20s.h"
+#define NUM_LAYERS 3
+
static int debug = 1;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
@@ -48,7 +50,7 @@
bool inversion;
u32 subchannel;
- u32 estimated_rate[3];
+ u32 estimated_rate[NUM_LAYERS];
unsigned long get_strength_time;
bool need_init;
@@ -666,7 +668,7 @@
/* Get per-layer data */
- for (i = 0; i < 3; i++) {
+ for (i = 0; i < NUM_LAYERS; i++) {
dev_dbg(&state->i2c->dev, "%s: getting data for layer %c.\n",
__func__, 'A' + i);
@@ -828,7 +830,7 @@
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
- if (layer >= 3)
+ if (layer >= NUM_LAYERS)
return -EINVAL;
/* Check if the BER measures are already available */
@@ -962,7 +964,7 @@
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
- if (layer >= 3)
+ if (layer >= NUM_LAYERS)
return -EINVAL;
/* Check if the BER measures are already available */
@@ -1089,7 +1091,7 @@
u32 collect_rate;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
- if (layer >= 3)
+ if (layer >= NUM_LAYERS)
return -EINVAL;
/* Check if the PER measures are already available */
@@ -1476,7 +1478,7 @@
}
/* Read all layers */
- for (i = 0; i < 3; i++) {
+ for (i = 0; i < NUM_LAYERS; i++) {
if (!(c->isdbt_layer_enabled & (1 << i))) {
c->cnr.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE;
continue;
@@ -1565,20 +1567,20 @@
c->strength.len = 1;
/* Per-layer stats - 3 layers + global */
- c->cnr.len = 4;
- c->pre_bit_error.len = 4;
- c->pre_bit_count.len = 4;
- c->post_bit_error.len = 4;
- c->post_bit_count.len = 4;
- c->block_error.len = 4;
- c->block_count.len = 4;
+ c->cnr.len = NUM_LAYERS + 1;
+ c->pre_bit_error.len = NUM_LAYERS + 1;
+ c->pre_bit_count.len = NUM_LAYERS + 1;
+ c->post_bit_error.len = NUM_LAYERS + 1;
+ c->post_bit_count.len = NUM_LAYERS + 1;
+ c->block_error.len = NUM_LAYERS + 1;
+ c->block_count.len = NUM_LAYERS + 1;
/* Signal is always available */
c->strength.stat[0].scale = FE_SCALE_RELATIVE;
c->strength.stat[0].uvalue = 0;
/* Put all of them at FE_SCALE_NOT_AVAILABLE */
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < NUM_LAYERS + 1; i++) {
c->cnr.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
@@ -1617,7 +1619,7 @@
if (status_nr < 9)
return 0;
- for (i = 0; i < 3; i++) {
+ for (i = 0; i < NUM_LAYERS; i++) {
if (c->isdbt_layer_enabled & (1 << i)) {
/* Layer is active and has rc segments */
active_layers++;
