linux-kernel - [PATCH 3.16 61/63] mwifiex: don't follow AP if country code received from EEPROM

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Message-ID: <lsq.1578512578.576724707@decadent.org.uk>
Date:   Wed, 08 Jan 2020 19:43:59 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Kalle Valo" <kvalo@...eaurora.org>,
        "Cathy Luo" <cluo@...vell.com>,
        "Amitkumar Karwar" <akarwar@...vell.com>
Subject: [PATCH 3.16 61/63] mwifiex: don't follow AP if country code
 received from EEPROM

3.16.81-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Amitkumar Karwar <akarwar@...vell.com>

commit 947d315257f9b25b0e24f5706f8184b3b00774d4 upstream.

If device has already received country information from
EEPROM, we won't parse AP's country IE and download it to
firmware. We will also set regulatory flags to disable beacon
hints and ignore country IE.

Signed-off-by: Amitkumar Karwar <akarwar@...vell.com>
Signed-off-by: Cathy Luo <cluo@...vell.com>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
[bwh: Backported to 3.16: adjust filenames, context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/net/wireless/mwifiex/cfg80211.c  | 4 ++++
 drivers/net/wireless/mwifiex/sta_ioctl.c | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -2917,6 +2917,10 @@ int mwifiex_register_cfg80211(struct mwi
 	wiphy->cipher_suites = mwifiex_cipher_suites;
 	wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
 
+	if (adapter->region_code)
+		wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS |
+					   REGULATORY_COUNTRY_IE_IGNORE;
+
 	memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
 	wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
 	wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -266,7 +266,8 @@ int mwifiex_bss_start(struct mwifiex_pri
 	priv->scan_block = false;
 
 	if (bss) {
-		mwifiex_process_country_ie(priv, bss);
+		if (adapter->region_code == 0x00)
+			mwifiex_process_country_ie(priv, bss);
 
 		/* Allocate and fill new bss descriptor */
 		bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),