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ath10k: reduce dma burst size on newer firmware to fix crashes 

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

Backport of r46900

git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@46901 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Felix Fietkau 2015-09-13 20:46:00 +00:00
parent 7c573c8758
commit 916dfa7c92
1 changed files with 24 additions and 0 deletions
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package/kernel/mac80211/patches/396-ath10k-fix-DMA-related-firmware-crashes-on-multiple-.patch Normal file
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From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 13 Sep 2015 22:26:10 +0200
Subject: [PATCH] ath10k: fix DMA related firmware crashes on multiple devices
Some platforms really don't like DMA bursts of 256 bytes, and this
causes the firmware to crash when sending beacons.
Also, changing this based on the firmware version does not seem to make
much sense, so use 128 bytes for all versions.
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
--- a/drivers/net/wireless/ath/ath10k/hw.h
+++ b/drivers/net/wireless/ath/ath10k/hw.h
@@ -253,7 +253,7 @@ struct ath10k_pktlog_hdr {
#define TARGET_10X_MAX_FRAG_ENTRIES 0
/* 10.2 parameters */
-#define TARGET_10_2_DMA_BURST_SIZE 1
+#define TARGET_10_2_DMA_BURST_SIZE 0
/* Target specific defines for WMI-TLV firmware */
#define TARGET_TLV_NUM_VDEVS 3