ath10k: txrx: remove unreachable negative return check and fixup type
wait_event_timeout(), introduced in 'commit 5e3dd157 ("ath10k: mac80211 driver for Qualcomm Atheros 802.11ac CQA98xx devices")' never returns < 0 so the only failure condition to be checked is == 0 (timeout). Further the return type is long not int - an appropriately named variable is added and the assignments fixed up. Signed-off-by: NNicholas Mc Guire <hofrat@osadl.org> Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
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