From 29700821e3b9a1d7e1069aad9bfa811b8533b334 Mon Sep 17 00:00:00 2001 From: Per Forlin Date: Wed, 28 Sep 2011 09:32:20 +0200 Subject: dmaengine/ste_dma40: use writel_relaxed for lcxa lcpa and lcla are written often and the cache_sync() overhead in writel is costly, especially for wlan where every single network packet (in RX mode) corresponds to a separate DMA transfer. ST-Ericsson Linux next: TESTED ST-Ericsson ID: 357764 ST-Ericsson FOSS-OUT ID: Trivial Change-Id: I8339704de95f2355d22681ac4bd542795770fa89 Signed-off-by: Per Forlin Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/33009 Reviewed-by: Narayanan GOPALAKRISHNAN Reviewed-by: QABUILD Reviewed-by: Rabin VINCENT --- drivers/dma/ste_dma40_ll.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/dma/ste_dma40_ll.c b/drivers/dma/ste_dma40_ll.c index 450079e2c12..d47d1fa36b9 100644 --- a/drivers/dma/ste_dma40_ll.c +++ b/drivers/dma/ste_dma40_ll.c @@ -333,10 +333,10 @@ void d40_log_lli_lcpa_write(struct d40_log_lli_full *lcpa, { d40_log_lli_link(lli_dst, lli_src, next, flags); - writel(lli_src->lcsp02, &lcpa[0].lcsp0); - writel(lli_src->lcsp13, &lcpa[0].lcsp1); - writel(lli_dst->lcsp02, &lcpa[0].lcsp2); - writel(lli_dst->lcsp13, &lcpa[0].lcsp3); + writel_relaxed(lli_src->lcsp02, &lcpa[0].lcsp0); + writel_relaxed(lli_src->lcsp13, &lcpa[0].lcsp1); + writel_relaxed(lli_dst->lcsp02, &lcpa[0].lcsp2); + writel_relaxed(lli_dst->lcsp13, &lcpa[0].lcsp3); } void d40_log_lli_lcla_write(struct d40_log_lli *lcla, @@ -346,10 +346,10 @@ void d40_log_lli_lcla_write(struct d40_log_lli *lcla, { d40_log_lli_link(lli_dst, lli_src, next, flags); - writel(lli_src->lcsp02, &lcla[0].lcsp02); - writel(lli_src->lcsp13, &lcla[0].lcsp13); - writel(lli_dst->lcsp02, &lcla[1].lcsp02); - writel(lli_dst->lcsp13, &lcla[1].lcsp13); + writel_relaxed(lli_src->lcsp02, &lcla[0].lcsp02); + writel_relaxed(lli_src->lcsp13, &lcla[0].lcsp13); + writel_relaxed(lli_dst->lcsp02, &lcla[1].lcsp02); + writel_relaxed(lli_dst->lcsp13, &lcla[1].lcsp13); } static void d40_log_fill_lli(struct d40_log_lli *lli, -- cgit v1.2.3