FAILED: patch "[PATCH] wifi: ath9k: Don't mark channelmap stack variable read-only" failed to apply to 6.2-stable tree

FAILED: patch "[PATCH] wifi: ath9k: Don't mark channelmap stack variable read-only" failed to apply to 6.2-stable tree

[gregkh]

The patch below does not apply to the 6.2-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.2.y
git checkout FETCH_HEAD
git cherry-pick -x b956e3110a797a3663f91f9b8935b667cc23fe72
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2023050713-pension-another-34bb@gregkh' --subject-prefix 'PATCH 6.2.y' HEAD^..

Possible dependencies:

b956e3110a79 ("wifi: ath9k: Don't mark channelmap stack variable read-only in ath9k_mci_update_wlan_channels()")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b956e3110a797a3663f91f9b8935b667cc23fe72 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@toke.dk>
Date: Mon, 17 Apr 2023 13:35:03 +0300
Subject: [PATCH] wifi: ath9k: Don't mark channelmap stack variable read-only
 in ath9k_mci_update_wlan_channels()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This partially reverts commit e161d4b60ae3a5356e07202e0bfedb5fad82c6aa.

Turns out the channelmap variable is not actually read-only, it's modified
through the MCI_GPM_CLR_CHANNEL_BIT() macro further down in the function,
so making it read-only causes page faults when that code is hit.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=217183
Fixes: e161d4b60ae3 ("wifi: ath9k: Make arrays prof_prio and channelmap static const")
Cc: stable@vger.kernel.org
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230413214118.153781-1-toke@toke.dk

diff --git a/drivers/net/wireless/ath/ath9k/mci.c b/drivers/net/wireless/ath/ath9k/mci.c
index 3363fc4e8966..a0845002d6fe 100644
--- a/drivers/net/wireless/ath/ath9k/mci.c
+++ b/drivers/net/wireless/ath/ath9k/mci.c
@@ -646,9 +646,7 @@ void ath9k_mci_update_wlan_channels(struct ath_softc *sc, bool allow_all)
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
 	struct ath9k_channel *chan = ah->curchan;
-	static const u32 channelmap[] = {
-		0x00000000, 0xffff0000, 0xffffffff, 0x7fffffff
-	};
+	u32 channelmap[] = {0x00000000, 0xffff0000, 0xffffffff, 0x7fffffff};
 	int i;
 	s16 chan_start, chan_end;
 	u16 wlan_chan;