mac80211: fix channel switch for chanctx-based drivers
The new_ctx pointer is set only for non-chanctx drivers. This yielded a crash for chanctx-based drivers during channel switch finalization: BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 IP: ieee80211_vif_use_reserved_switch+0x71c/0xb00 [mac80211] Use an adequate chanctx pointer to fix this. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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