[PATCH 5/5] mmc: sdhci: add quirk SDHCI_QUIRK_FIX_NO_INT_IN_MULTI_BLK_IO
From: Russell King - ARM Linux <hidden>
Date: 2011-02-21 11:06:24
Also in:
linux-mmc
On Mon, Feb 21, 2011 at 05:54:55PM +0800, Richard Zhao wrote:
+ if (host->quirks & SDHCI_QUIRK_FIX_NO_INT_IN_MULTI_BLK_IO) {
+ if (readl(host->ioaddr + SDHCI_VENDOR_SPEC) & 0x2)
+ writel(readl(host->ioaddr + SDHCI_VENDOR_SPEC) & ~0x2,
+ host->ioaddr + SDHCI_VENDOR_SPEC);Is it necessary to read the register twice, or would: u32 val = readl(host->ioaddr + SDHCI_VENDOR_SPEC); if (val & 0x02) writel(val & ~0x02, host->ioaddr + SDHCI_VENDOR_SPEC); be clearer and more obvious?