From 20427e5db3f96fc054c6a6ad95606906b834deb1 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 3 Dec 2018 20:56:47 +0100 Subject: [PATCH] mmc: document 'Reliable Write' bit in uapi header If we use it this way, people should know about it. Also, replace true/false with nonzero/zero because the flag is not strictly a bool anymore. Signed-off-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven Signed-off-by: Ulf Hansson --- 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 45f369dc0a426..00c08120f3ba6 100644 --- a/include/uapi/linux/mmc/ioctl.h +++ b/include/uapi/linux/mmc/ioctl.h @@ -5,7 +5,10 @@ #include struct mmc_ioc_cmd { - /* Implies direction of data. true = write, false = read */ + /* + * Direction of data: nonzero = write, zero = read. + * Bit 31 selects 'Reliable Write' for RPMB. + */ int write_flag; /* Application-specific command. true = precede with CMD55 */ -- 2.39.5