From: Bin Meng <bin.meng@windriver.com>
Date: Tue, 2 Feb 2021 02:48:46 +0000 (+0800)
Subject: mmc: mmc_spi: Move argument check to the beginning of mmc_spi_sendcmd()
X-Git-Url: http://git.dujemihanovic.xyz/%22http:/www.sics.se/static/git-logo.png?a=commitdiff_plain;h=781aad0de93aedf94a17cc66b2f211bf156b718e;p=u-boot.git

mmc: mmc_spi: Move argument check to the beginning of mmc_spi_sendcmd()

The argument check should happen before any transfer on the SPI lines.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
---

diff --git a/drivers/mmc/mmc_spi.c b/drivers/mmc/mmc_spi.c
index 23b907328c..a06862aa48 100644
--- a/drivers/mmc/mmc_spi.c
+++ b/drivers/mmc/mmc_spi.c
@@ -78,6 +78,9 @@ static int mmc_spi_sendcmd(struct udevice *dev,
 	int i, rpos = 0, ret = 0;
 	u8 cmdo[7], r;
 
+	if (!resp || !resp_size)
+		return 0;
+
 	debug("%s: cmd%d cmdarg=0x%x resp_type=0x%x "
 	      "resp_size=%d resp_match=%d resp_match_value=0x%x\n",
 	      __func__, cmdidx, cmdarg, resp_type,
@@ -98,9 +101,6 @@ static int mmc_spi_sendcmd(struct udevice *dev,
 	if (ret)
 		return ret;
 
-	if (!resp || !resp_size)
-		return 0;
-
 	debug("%s: cmd%d", __func__, cmdidx);
 
 	if (resp_match) {