From: Yinbo Zhu <yinbo.zhu@xxxxxxx>
Invalid Transfer Complete (IRQSTAT[TC]) bit could be set during
multi-write operation even when the BLK_CNT in BLKATTR register
has not reached zero. Therefore, Transfer Complete might be
reported twice due to this erratum since a valid Transfer Complete
occurs when BLK_CNT reaches zero. This erratum is to fix this issue
Signed-off-by: Yinbo Zhu <yinbo.zhu@xxxxxxx>
---
drivers/mmc/host/sdhci.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 6f604d6..8f72889 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2988,6 +2988,15 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
}
if (intmask & SDHCI_INT_DATA_END) {
+ if (of_find_compatible_node(NULL, NULL,
+ "fsl,p2020-esdhc")) {
+ command = SDHCI_GET_CMD(sdhci_readw(host,
+ SDHCI_COMMAND));
+ if (command == MMC_WRITE_MULTIPLE_BLOCK &&
+ sdhci_readw(host, SDHCI_BLOCK_COUNT)
+ != 0)
+ return;
+ }
if (host->cmd == host->data_cmd) {
/*
* Data managed to finish before the
--
1.7.1
