openwrt-owl/target/linux/brcm2708/patches-3.10/0011-sdhci-bcm2708-speed-up...

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Diff

From 07947cfde701f7ba29b06574e9533bd6459da8ad Mon Sep 17 00:00:00 2001
From: Grigori Goronzy <greg@blackbox>
Date: Mon, 4 Jun 2012 04:27:48 +0200
Subject: [PATCH 011/196] 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(-)
diff --git a/drivers/mmc/host/sdhci-bcm2708.c b/drivers/mmc/host/sdhci-bcm2708.c
index ae8edf7..a6bdc25 100644
--- a/drivers/mmc/host/sdhci-bcm2708.c
+++ b/drivers/mmc/host/sdhci-bcm2708.c
@@ -897,7 +897,7 @@ static void sdhci_bcm2708_dma_complete_irq(struct sdhci_host *host,
while (0 != (sdhci_bcm2708_raw_readl(host, SDHCI_PRESENT_STATE)
& state_mask) && --timeout > 0)
{
- udelay(100);
+ udelay(30);
continue;
}
if (timeout <= 0)
--
1.9.1