| From 785e726fa2ed1ae283daefaaac63dfbb329d080f Mon Sep 17 00:00:00 2001 |
| From: Avery Pennarun <apenwarr@gmail.com> |
| Date: Sat, 8 Mar 2014 01:45:41 -0500 |
| Subject: [PATCH 03/11] ath10k: add an mb() in the transmit function to fix |
| firmware crashes. |
| |
| To be honest, I have no idea why this helps. I was desperate so I started |
| with udelay(1000), which fixed the crashes, then worked my way down to |
| ndelay(1) and it still fixed the crashes. Even mb() fixes the crashes. |
| Removing it brings the crashes back instantly. So this matters. |
| --- |
| drivers/net/wireless/ath/ath10k/ce.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c |
| index a79499c..a808d82 100644 |
| --- a/drivers/net/wireless/ath/ath10k/ce.c |
| +++ b/drivers/net/wireless/ath/ath10k/ce.c |
| @@ -291,6 +291,7 @@ int ath10k_ce_send_nolock(struct ath10k_ce_pipe *ce_state, |
| if (ret) |
| return ret; |
| |
| + mb(); |
| if (unlikely(CE_RING_DELTA(nentries_mask, |
| write_index, sw_index - 1) <= 0)) { |
| ret = -ENOSR; |
| -- |
| 1.9.0.279.gdc9e3eb |
| |
