From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Date: Mon, 14 Aug 2017 20:00:24 +0000 (+0200)
Subject: mmc: sdhci: key 8BITBUS bit off MMC_CAP_8_BIT_DATA
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=98f94ea6d823a2605a6cbe16c943e81abd9e8690;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

mmc: sdhci: key 8BITBUS bit off MMC_CAP_8_BIT_DATA

Hosts supporting 8-bit bus are marked accordingly. If MMC_CAP_8_BIT_DATA
is not among host capabilities, 8BITBUS bit will never be set and it
is not cleared in case some non-SDHCI3 host uses it for something else.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index a1ad2ddadca1..1fda50855e31 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1544,10 +1544,9 @@ void sdhci_set_bus_width(struct sdhci_host *host, int width)
 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 	if (width == MMC_BUS_WIDTH_8) {
 		ctrl &= ~SDHCI_CTRL_4BITBUS;
-		if (host->version >= SDHCI_SPEC_300)
-			ctrl |= SDHCI_CTRL_8BITBUS;
+		ctrl |= SDHCI_CTRL_8BITBUS;
 	} else {
-		if (host->version >= SDHCI_SPEC_300)
+		if (host->mmc->caps & MMC_CAP_8_BIT_DATA)
 			ctrl &= ~SDHCI_CTRL_8BITBUS;
 		if (width == MMC_BUS_WIDTH_4)
 			ctrl |= SDHCI_CTRL_4BITBUS;