linux-kernel - [PATCH 4.18 020/168] nl80211: Pass center frequency in kHz instead of MHz

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Date:   Mon,  8 Oct 2018 20:30:00 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Haim Dreyfuss <haim.dreyfuss@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Johannes Berg <johannes.berg@...el.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.18 020/168] nl80211: Pass center frequency in kHz instead of MHz

4.18-stable review patch.  If anyone has any objections, please let me know.

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

From: Haim Dreyfuss <haim.dreyfuss@...el.com>

[ Upstream commit b88d26d97c41680f7327e5fb8061ad0037877f40 ]

freq_reg_info expects to get the frequency in kHz. Instead we
accidently pass it in MHz.  Thus, currently the function always
return ERR rule. Fix that.

Fixes: 50f32718e125 ("nl80211: Add wmm rule attribute to NL80211_CMD_GET_WIPHY dump command")
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@...el.com>
Signed-off-by: Luca Coelho <luciano.coelho@...el.com>
[fix kHz/MHz in commit message]
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/wireless/nl80211.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -764,7 +764,7 @@ static int nl80211_msg_put_channel(struc
 
 	if (large) {
 		const struct ieee80211_reg_rule *rule =
-			freq_reg_info(wiphy, chan->center_freq);
+			freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 
 		if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 			if (nl80211_msg_put_wmm_rules(msg, rule))