summaryrefslogtreecommitdiff
path: root/target/linux/brcm2708/patches-3.10/0011-sdhci-bcm2708-speed-up-DMA-sync.patch
blob: 5087146fe784bcf92c146938b1adf9ce07a1f180 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
From e38d3d05747f6877a2ad1a7af1ac26e6a48a8be3 Mon Sep 17 00:00:00 2001
From: Grigori Goronzy <greg@blackbox>
Date: Mon, 4 Jun 2012 04:27:48 +0200
Subject: [PATCH 011/174] sdhci-bcm2708: speed up DMA sync

Experiments show that it doesn't really take that long to sync, so we
can reduce the poll interval slightly. Might improve performance a bit.
---
 drivers/mmc/host/sdhci-bcm2708.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/mmc/host/sdhci-bcm2708.c
+++ b/drivers/mmc/host/sdhci-bcm2708.c
@@ -897,7 +897,7 @@ static void sdhci_bcm2708_dma_complete_i
 		while (0 != (sdhci_bcm2708_raw_readl(host, SDHCI_PRESENT_STATE) 
 			& state_mask) && --timeout > 0)
 		{
-			udelay(100);
+			udelay(30);
 			continue;
 		}
 		if (timeout <= 0)