mmc: omap_hsmmc: if multiblock reads are broken, disable them

[pandora-kernel.git] / drivers / mmc / host / omap_hsmmc.c

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index bb334be..e8ff123 100644 (file)
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1942,6 +1942,10 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
        omap_hsmmc_context_save(host);
 
        mmc->caps |= MMC_CAP_DISABLE;
+       if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) {
+               dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n");
+               mmc->caps2 |= MMC_CAP2_NO_MULTI_READ;
+       }
 
        pm_runtime_enable(host->dev);
        pm_runtime_get_sync(host->dev);