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| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2019-05-06 09:39:17 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-05-28 14:29:30 +0300 |
| commit | 8a03447dd311da2ad2df74dcf730a1a15f673379 (patch) | |
| tree | 4eff6c6059d0cfe38033e43922fb7dc78628e637 /drivers/net/wireless/realtek/rtw88/phy.c | |
| parent | 3e66b7cc50ef921121babc91487e1fb98af1ba6e (diff) | |
| download | linux-8a03447dd311da2ad2df74dcf730a1a15f673379.tar.bz2 | |
rtw88: fix subscript above array bounds compiler warning
My compiler complains about:
drivers/net/wireless/realtek/rtw88/phy.c: In function ‘rtw_phy_rf_power_2_rssi’:
drivers/net/wireless/realtek/rtw88/phy.c:430:26: warning: array subscript is above array bounds [-Warray-bounds]
linear = db_invert_table[i][j];
According to comment power_db should be in range 1 ~ 96 .
To fix add check for boundaries before access the array.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/realtek/rtw88/phy.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/phy.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/phy.c b/drivers/net/wireless/realtek/rtw88/phy.c index 4381b360b5b5..8284a7797398 100644 --- a/drivers/net/wireless/realtek/rtw88/phy.c +++ b/drivers/net/wireless/realtek/rtw88/phy.c @@ -423,6 +423,11 @@ static u64 rtw_phy_db_2_linear(u8 power_db) u8 i, j; u64 linear; + if (power_db > 96) + power_db = 96; + else if (power_db < 1) + return 1; + /* 1dB ~ 96dB */ i = (power_db - 1) >> 3; j = (power_db - 1) - (i << 3); |