>From 27d46f5697434542ad9cafbc6a9630dc14915f91 Mon Sep 17 00:00:00 2001
From: Jeonghan Kim <jh4u.kim@xxxxxxxxxxx>
Date: Wed, 19 Oct 2016 19:48:02 +0900
Subject: [PATCH] mmc: block: Change MMC_IOC_MAX_BYTES
It is used for limitation of buffer size during IOCTL such as FFU.
However, eMMC FW size is bigger than (512L*256).
(For instance, currently, Samsung eMMC FW size is over 300KB.)
So, it needs to increase to execute FFU.
Signed-off-by: Jeonghan Kim <jh4u.kim@xxxxxxxxxxx>
---
include/uapi/linux/mmc/ioctl.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/uapi/linux/mmc/ioctl.h b/include/uapi/linux/mmc/ioctl.h
index 7e385b8..700a551 100644
--- a/include/uapi/linux/mmc/ioctl.h
+++ b/include/uapi/linux/mmc/ioctl.h
@@ -69,6 +69,6 @@ struct mmc_ioc_multi_cmd {
* is enforced per ioctl call. For larger data transfers, use the normal
* block device operations.
*/
-#define MMC_IOC_MAX_BYTES (512L * 256)
+#define MMC_IOC_MAX_BYTES (512L * 1024)
#define MMC_IOC_MAX_CMDS 255
#endif /* LINUX_MMC_IOCTL_H */
--
1.9.1
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