From: Bean Huo <beanhuo@xxxxxxxxxx>
Currently, we have two ways to issue multiple-block read/write the
command to the eMMC. One is by normal IO request path fs->block->mmc.
Another one is that we can issue multiple-block read/write through
MMC ioctl interface. For the first path, mrq->stop, and mrq->stop->opcode
will be initialized in mmc_blk_data_prep(). However, for the second IO
path, mrq->stop is not initialized since it is a pre-defined multiple
blocks read/write.
Meanwhile, if it is open-ended multiple block read/write command,
STOP_TRANSMISSION CMD12 will be issued later in mmc_blk_issue_drv_op(),
since it is MMC_IOC_MULTI_CMD.
So, delete these if-statement checkups, let these kinds of multiple-block
read/write request go.
Fixes 'ba3869ff32e4 ("mmc: cavium: Add core MMC driver for Cavium SOCs")'
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Bean Huo <beanhuo@xxxxxxxxxx>
---
drivers/mmc/host/cavium.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/mmc/host/cavium.c b/drivers/mmc/host/cavium.c
index 95a41983c6c0..8fb7cbcf62ad 100644
--- a/drivers/mmc/host/cavium.c
+++ b/drivers/mmc/host/cavium.c
@@ -654,8 +654,7 @@ static void cvm_mmc_dma_request(struct mmc_host *mmc,
struct mmc_data *data;
u64 emm_dma, addr;
- if (!mrq->data || !mrq->data->sg || !mrq->data->sg_len ||
- !mrq->stop || mrq->stop->opcode != MMC_STOP_TRANSMISSION) {
+ if (!mrq->data || !mrq->data->sg || !mrq->data->sg_len) {
dev_err(&mmc->card->dev, "Error: %s no data\n", __func__);
goto error;
}
--
2.25.1
