openwrt/target/linux/brcm2708/patches-3.10/0011-sdhci-bcm2708-speed-up-DMA-sync.patch
Florian Fainelli 6918ea2484 brcm2708: update 3.10 patches with raspberrypi/rpi-3.10.y of 27 Apr. 2014
Update the 3.10 rasperry patches by rebasing raspberry/rpi-3.10-y
against linux-stable/v3.10.49.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 42678
2014-09-27 19:10:51 +00:00

28 lines
910 B
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