mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-06 08:46:46 +00:00
Code Issues Releases Wiki Activity

staging: rtl8723bs: refactor rtw_ch2freq()

Browse source 
Convert the array ch_freq_map to a simple integer array and use
the indices as channel numbers. This simplifies the code and avoids
looping through the array to get the frequency. To avoid out of
bounds array access return a default value for invalid channel values,
like the original code did.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220331214146.15161-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Straube 2022-03-31 23:41:46 +02:00 committed by Greg Kroah-Hartman
parent f232da0fa9
commit 8a56b5ce77
1 changed files with 18 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

40
drivers/staging/rtl8723bs/core/rtw_rf.c
View file

@ -8,31 +8,27 @@
#include <drv_types.h>
#include <linux/kernel.h>
struct ch_freq {
u32 channel;
u32 frequency;
};
static struct ch_freq ch_freq_map[] = {
{1, 2412}, {2, 2417}, {3, 2422}, {4, 2427}, {5, 2432},
{6, 2437}, {7, 2442}, {8, 2447}, {9, 2452}, {10, 2457},
{11, 2462}, {12, 2467}, {13, 2472}, {14, 2484},
static const u32 ch_freq_map[] = {
2412,
2417,
2422,
2427,
2432,
2437,
2442,
2447,
2452,
2457,
2462,
2467,
2472,
2484
};
u32 rtw_ch2freq(u32 channel)
{
u8 i;
u32 freq = 0;
if (channel == 0 || channel > ARRAY_SIZE(ch_freq_map))
return 2412;
for (i = 0; i < ARRAY_SIZE(ch_freq_map); i++) {
if (channel == ch_freq_map[i].channel) {
freq = ch_freq_map[i].frequency;
break;
}
}
if (i == ARRAY_SIZE(ch_freq_map))
freq = 2412;
return freq;
return ch_freq_map[channel - 1];
}