linux-kernel - [PATCH 1/3] mmc: block: ioctl: define rpmb reliable flag

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Message-ID: <e41fbab65e164b3788818bae83f0061a@hyperstone.com>
Date:   Wed, 5 Apr 2023 11:57:21 +0000
From:   Christian Löhle <CLoehle@...erstone.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Avri Altman <avri.altman@....com>
Subject: [PATCH 1/3] mmc: block: ioctl: define rpmb reliable flag

Give a proper name to BIT 31 which is used as reliable write
for RPMB.

Signed-off-by: Christian Loehle <cloehle@...erstone.com>
---
 drivers/mmc/core/block.c       | 5 ++++-
 include/uapi/linux/mmc/ioctl.h | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 672ab90c4b2d..16e262ddc954 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -49,6 +49,8 @@
 
 #include <linux/uaccess.h>
 
+#include <uapi/linux/mmc/ioctl.h>
+
 #include "queue.h"
 #include "block.h"
 #include "core.h"
@@ -538,7 +540,8 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md,
 		 * may be increased by a future standard. We just copy the
 		 * 'Reliable Write' bit here.
 		 */
-		sbc.arg = data.blocks | (idata->ic.write_flag & BIT(31));
+		sbc.arg = data.blocks |
+			(idata->ic.write_flag & MMC_RPMB_RELIABLE_WRITE);
 		sbc.flags = MMC_RSP_R1 | MMC_CMD_AC;
 		mrq.sbc = &sbc;
 	}
diff --git a/include/uapi/linux/mmc/ioctl.h b/include/uapi/linux/mmc/ioctl.h
index e7401ade6822..b2ff7f5be87b 100644
--- a/include/uapi/linux/mmc/ioctl.h
+++ b/include/uapi/linux/mmc/ioctl.h
@@ -11,6 +11,7 @@ struct mmc_ioc_cmd {
 	 * Bit 31 selects 'Reliable Write' for RPMB.
 	 */
 	int write_flag;
+#define MMC_RPMB_RELIABLE_WRITE (1 << 31)
 
 	/* Application-specific command.  true = precede with CMD55 */
 	int is_acmd;
-- 
2.37.3


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