From mboxrd@z Thu Jan 1 00:00:00 1970 From: haibo.chen at nxp.com Date: Tue, 22 Sep 2020 18:11:42 +0800 Subject: [PATCH 1/2] mmc: do not send cmd13 if the parameter 'send_status' is 0 for __mmc_switch Message-ID: <1600769503-30395-1-git-send-email-haibo.chen@nxp.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de From: Haibo Chen According to the code logic in __mmc_switch, if the parameter 'send_status' is zero, no need to send cmd13, just wait the stated timeout time, then can return directly. Signed-off-by: Haibo Chen --- drivers/mmc/mmc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index d79cdef62e..6cb2af4232 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -805,8 +805,10 @@ static int __mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value, * capable of polling by using mmc_wait_dat0, then rely on waiting the * stated timeout to be sufficient. */ - if (ret == -ENOSYS && !send_status) + if (ret == -ENOSYS && !send_status) { mdelay(timeout_ms); + return 0; + } /* Finally wait until the card is ready or indicates a failure * to switch. It doesn't hurt to use CMD13 here even if send_status -- 2.17.1