wifi: ath9k: Don't mark channelmap stack variable read-only in ath9k_mci_update_wlan_...

commit 0f2a4af27b649c13ba76431552fe49c60120d0f6 upstream.

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
Link: https://lore.kernel.org/r/20230413214118.153781-1-toke@toke.dk
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: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/wireless/ath/ath9k/mci.c b/drivers/net/wireless/ath/ath9k/mci.c
index 3363fc4e89661a98d1e1a96a7b3cccf5dafd15fb..a0845002d6fe325584e6c35030809fabf15c4207 100644 (file)
--- 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;