From: Bin Meng <bmeng.cn@gmail.com>
Date: Tue, 2 Feb 2021 02:32:48 +0000 (+0800)
Subject: mmc: mmc_spi: Print verbose debug output when crc16 check fails
X-Git-Tag: v2021.10~308^2~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=01962f8d7ced3d8b9748d3b902f7f9b68587c426;p=platform%2Fkernel%2Fu-boot.git

mmc: mmc_spi: Print verbose debug output when crc16 check fails

Add some verbose debug output when crc16 check fails.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
---

diff --git a/drivers/mmc/mmc_spi.c b/drivers/mmc/mmc_spi.c
index 46800bb..23b9073 100644
--- a/drivers/mmc/mmc_spi.c
+++ b/drivers/mmc/mmc_spi.c
@@ -181,8 +181,10 @@ static int mmc_spi_readdata(struct udevice *dev,
 			if (ret)
 				return ret;
 #ifdef CONFIG_MMC_SPI_CRC_ON
-			if (be16_to_cpu(crc16_ccitt(0, buf, bsize)) != crc) {
-				debug("%s: data crc error\n", __func__);
+			u16 crc_ok = be16_to_cpu(crc16_ccitt(0, buf, bsize));
+			if (crc_ok != crc) {
+				debug("%s: data crc error, expected %04x got %04x\n",
+				      __func__, crc_ok, crc);
 				r1 = R1_SPI_COM_CRC;
 				break;
 			}