backports: add mmc_card_hs()

This is needed by the RSI driver.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

diff --git a/backport/backport-include/linux/mmc/host.h b/backport/backport-include/linux/mmc/host.h
new file mode 100644 (file)
index 0000000..49d7049
--- /dev/null
+++ b/backport/backport-include/linux/mmc/host.h
@@ -0,0 +1,16 @@
+#ifndef _BACKPORTLINUX_MMC_HOST_H
+#define _BACKPORTLINUX_MMC_HOST_H
+#include_next <linux/mmc/host.h>
+#include <linux/version.h>
+#include <linux/mmc/card.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0)
+#define mmc_card_hs LINUX_BACKPORT(mmc_card_hs)
+static inline int mmc_card_hs(struct mmc_card *card)
+{
+       return card->host->ios.timing == MMC_TIMING_SD_HS ||
+               card->host->ios.timing == MMC_TIMING_MMC_HS;
+}
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0) */
+
+#endif /* _BACKPORTLINUX_MMC_HOST_H */