From: Yuseok Kim <yuseok21.kim@samsung.com>
Date: Fri, 22 Mar 2019 17:26:21 +0000 (+0900)
Subject: [RAMEN9610-13741][Common][9610] fix to avoid invalid scan channel
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0e3abef8efd08a85117eb40a4c27ab7b9a07cef4;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[RAMEN9610-13741][Common][9610] fix to avoid invalid scan channel

When channel scan was triggered for ACS, invalid channel was shwon.
This patch add protection code to avoid kernel panic.

Change-Id: Ic84aaddb8f145ffbb4d37c46d1a9a0d8d08b1ea0
---

diff --git a/drivers/net/wireless/scsc/rx.c b/drivers/net/wireless/scsc/rx.c
index d57fbeb8e2e0..109d02e5aac6 100755
--- a/drivers/net/wireless/scsc/rx.c
+++ b/drivers/net/wireless/scsc/rx.c
@@ -847,6 +847,11 @@ struct slsi_acs_chan_info *slsi_acs_scan_results(struct slsi_dev *sdev, struct n
 
 		idx = slsi_find_chan_idx(scan_channel->hw_value, ndev_vif->scan[SLSI_SCAN_HW_ID].acs_request->hw_mode);
 		SLSI_DBG3(sdev, SLSI_MLME, "chan_idx:%d chan_value: %d\n", idx, ch_info[idx].chan);
+
+		if ((idx < 0) || (idx > 24)) {
+			SLSI_DBG3(sdev, SLSI_MLME, "idx is not in range idx=%d\n", idx);
+			goto next_scan;
+		}
 		if (ch_info[idx].chan) {
 			ch_info[idx].num_ap += 1;
 			ie = cfg80211_find_ie(WLAN_EID_QBSS_LOAD, mgmt->u.beacon.variable, ies_len);