If we use it this way, people should know about it.
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
Still not super happy about shifting into the sign bit, but yeah...
don't break userspace, I guess.
include/uapi/linux/mmc/ioctl.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/mmc/ioctl.h b/include/uapi/linux/mmc/ioctl.h
index 45f369dc0a42..ae659333e73f 100644
--- a/include/uapi/linux/mmc/ioctl.h
+++ b/include/uapi/linux/mmc/ioctl.h
@@ -5,7 +5,10 @@
#include <linux/types.h>
struct mmc_ioc_cmd {
- /* Implies direction of data. true = write, false = read */
+ /*
+ * Implies direction of data. true = write, false = read.
+ * Bit 31 selects 'Reliable Write' for RPMB.
+ */
int write_flag;
/* Application-specific command. true = precede with CMD55 */
--
2.11.0
