diff options
| author | Marek Vasut <marex@denx.de> | 2018-11-06 23:42:11 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-11-10 08:16:30 -0500 |
| commit | 26cc40d8c4aaa8bd69055fb00d0737332661a879 (patch) | |
| tree | 4852eb0280919a3cc29415cf8cd4a0c51e4c96a1 /drivers | |
| parent | fb3148a2302b18860a5141d2d8d500ff7d58c0b8 (diff) | |
| download | u-boot-26cc40d8c4aaa8bd69055fb00d0737332661a879.tar.gz u-boot-26cc40d8c4aaa8bd69055fb00d0737332661a879.tar.bz2 u-boot-26cc40d8c4aaa8bd69055fb00d0737332661a879.zip | |
mmc: dw_mmc: Add RCRC handling
This patch adds check for command response CRC failure. The driver
is currently ignoring CRC check failure on command resposes which
have CRC atteched to it, which can be potentially dangerous. Even
more grueling problem happens when the command response is followed
by data transfer though, as in that case, the dwmci_data_transfer()
function will spin until it reaches the 240s timeout.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/dw_mmc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index 3c702b3ed8..7544b84ab6 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -317,6 +317,10 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, } else if (mask & DWMCI_INTMSK_RE) { debug("%s: Response Error.\n", __func__); return -EIO; + } else if ((cmd->resp_type & MMC_RSP_CRC) && + (mask & DWMCI_INTMSK_RCRC)) { + debug("%s: Response CRC Error.\n", __func__); + return -EIO; } |