Patch "wifi: brcmsmac: LCN PHY code is used for BCM4313 2G-only device" has been added to the 5.4-stable tree

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This is a note to let you know that I've just added the patch titled

    wifi: brcmsmac: LCN PHY code is used for BCM4313 2G-only device

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     wifi-brcmsmac-lcn-phy-code-is-used-for-bcm4313-2g-on.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 8177bdff2d60ad6b35932ce49ac6e14ab850d641
Author: Samasth Norway Ananda <samasth.norway.ananda@xxxxxxxxxx>
Date:   Thu May 9 16:10:37 2024 -0700

    wifi: brcmsmac: LCN PHY code is used for BCM4313 2G-only device
    
    [ Upstream commit c636fa85feb450ca414a10010ed05361a73c93a6 ]
    
    The band_idx variable in the function wlc_lcnphy_tx_iqlo_cal() will
    never be set to 1 as BCM4313 is the only device for which the LCN PHY
    code is used. This is a 2G-only device.
    
    Fixes: 5b435de0d786 ("net: wireless: add brcm80211 drivers")
    Signed-off-by: Samasth Norway Ananda <samasth.norway.ananda@xxxxxxxxxx>
    Acked-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>
    Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
    Link: https://msgid.link/20240509231037.2014109-1-samasth.norway.ananda@xxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c
index 66797dc5e90d5..1e597e5de5f1e 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c
@@ -2625,7 +2625,6 @@ wlc_lcnphy_tx_iqlo_cal(struct brcms_phy *pi,
 
 	struct lcnphy_txgains cal_gains, temp_gains;
 	u16 hash;
-	u8 band_idx;
 	int j;
 	u16 ncorr_override[5];
 	u16 syst_coeffs[] = { 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
@@ -2657,6 +2656,9 @@ wlc_lcnphy_tx_iqlo_cal(struct brcms_phy *pi,
 	u16 *values_to_save;
 	struct brcms_phy_lcnphy *pi_lcn = pi->u.pi_lcnphy;
 
+	if (WARN_ON(CHSPEC_IS5G(pi->radio_chanspec)))
+		return;
+
 	values_to_save = kmalloc_array(20, sizeof(u16), GFP_ATOMIC);
 	if (NULL == values_to_save)
 		return;
@@ -2720,20 +2722,18 @@ wlc_lcnphy_tx_iqlo_cal(struct brcms_phy *pi,
 	hash = (target_gains->gm_gain << 8) |
 	       (target_gains->pga_gain << 4) | (target_gains->pad_gain);
 
-	band_idx = (CHSPEC_IS5G(pi->radio_chanspec) ? 1 : 0);
-
 	cal_gains = *target_gains;
 	memset(ncorr_override, 0, sizeof(ncorr_override));
-	for (j = 0; j < iqcal_gainparams_numgains_lcnphy[band_idx]; j++) {
-		if (hash == tbl_iqcal_gainparams_lcnphy[band_idx][j][0]) {
+	for (j = 0; j < iqcal_gainparams_numgains_lcnphy[0]; j++) {
+		if (hash == tbl_iqcal_gainparams_lcnphy[0][j][0]) {
 			cal_gains.gm_gain =
-				tbl_iqcal_gainparams_lcnphy[band_idx][j][1];
+				tbl_iqcal_gainparams_lcnphy[0][j][1];
 			cal_gains.pga_gain =
-				tbl_iqcal_gainparams_lcnphy[band_idx][j][2];
+				tbl_iqcal_gainparams_lcnphy[0][j][2];
 			cal_gains.pad_gain =
-				tbl_iqcal_gainparams_lcnphy[band_idx][j][3];
+				tbl_iqcal_gainparams_lcnphy[0][j][3];
 			memcpy(ncorr_override,
-			       &tbl_iqcal_gainparams_lcnphy[band_idx][j][3],
+			       &tbl_iqcal_gainparams_lcnphy[0][j][3],
 			       sizeof(ncorr_override));
 			break;
 		}




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