From: Haibo Chen haibo.chen@nxp.com
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 haibo.chen@nxp.com --- 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