From: Bean Huo <beanhuo@xxxxxxxxxx>
Since the Linux kernel commit 70b52f090805 ("mmc: block: Disable CMDQ on
the ioctl path"), CMDQ in CMDQ_MODE_EN[15] is disabled before reading EXT_CSD.
Therefore, it is more accurate to use sysfs node to check CMDQ_MODE_EN value.
Add a note print to highlight.
Signed-off-by: Bean Huo <beanhuo@xxxxxxxxxx>
---
mmc_cmds.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mmc_cmds.c b/mmc_cmds.c
index ecbde3937c81..46c5f5faae02 100644
--- a/mmc_cmds.c
+++ b/mmc_cmds.c
@@ -1885,6 +1885,8 @@ int do_read_extcsd(int nargs, char **argv)
(ext_csd[EXT_CSD_CMDQ_DEPTH] & 0x1f) + 1);
printf("Command Enabled [CMDQ_MODE_EN]: 0x%02x\n",
ext_csd[EXT_CSD_CMDQ_MODE_EN]);
+ printf("Note: CMDQ_MODE_EN may not indicate the runtime CMDQ ON or OFF.\n"
+ "Please check sysfs node '/sys/devices/.../mmc_host/mmcX/mmcX:XXXX/cmdq_en'\n");
}
out_free:
return ret;
--
2.25.1
