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ath9k: Fix tx struck state with paprd
Paprd needs to be done only on active chains(not for all the chains that hw can support). The paprd training frames which are sent for inactive chains would be hanging on the hw queue without getting transmitted and would make the connection so unstable. This issue happens only with the hw which supports paprd cal(ar9003). Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
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