[incubator-nuttx] branch master updated: drivers/mmcsd:Send cmd0 just once for Increased compatibility

[ac...@apache.org]

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acassis pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git


The following commit(s) were added to refs/heads/master by this push:
     new 2866c27  drivers/mmcsd:Send cmd0 just once for Increased compatibility
2866c27 is described below

commit 2866c27c198c73779df83432b3c1a7758ab884fd
Author: anjianjun <an...@xiaomi.com>
AuthorDate: Wed Jul 28 12:28:33 2021 +0800

    drivers/mmcsd:Send cmd0 just once for Increased compatibility
    
    Signed-off-by: anjianjun <an...@xiaomi.com>
---
 drivers/mmcsd/mmcsd_sdio.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/mmcsd/mmcsd_sdio.c b/drivers/mmcsd/mmcsd_sdio.c
index a94a526..130627c 100644
--- a/drivers/mmcsd/mmcsd_sdio.c
+++ b/drivers/mmcsd/mmcsd_sdio.c
@@ -3096,10 +3096,9 @@ static int mmcsd_cardidentify(FAR struct mmcsd_state_s *priv)
 
   up_udelay(MMCSD_POWERUP_DELAY);
 
-  /* Then send CMD0 (twice just to be sure) */
+  /* Then send CMD0 just once is standard procedure */
 
   mmcsd_sendcmdpoll(priv, MMCSD_CMD0, 0);
-  mmcsd_sendcmdpoll(priv, MMCSD_CMD0, 0);
   up_udelay(MMCSD_IDLE_DELAY);
 
 #ifdef CONFIG_MMCSD_MMCSUPPORT