[patch -resend] mmc: ushc: fix an endianness conversion inushc_request()

From: Dan Carpenter
Date: Wed Jun 27 2012 - 05:03:19 EST


The ->cmd_idx field is 8 bits, not 16 so the call to cpu_to_le16()
will probably set cmd_idx to zero here on big endian systems. My guess
is that this works because it has been tested on little endian systems
where the conversion to le16 is a nop.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
I don't have a way to test this.

I have added a sentence to the changelog. I have added David Vrabel to
the CC list. This was originally sent to the mailing list on Mon, 21
Nov 2011 and there was no response.

diff --git a/drivers/mmc/host/ushc.c b/drivers/mmc/host/ushc.c
index c0105a2..25932f5 100644
--- a/drivers/mmc/host/ushc.c
+++ b/drivers/mmc/host/ushc.c
@@ -278,7 +278,7 @@ static void ushc_request(struct mmc_host *mmc, struct mmc_request *req)
ushc->current_req = req;

/* Start cmd with CBW. */
- ushc->cbw->cmd_idx = cpu_to_le16(req->cmd->opcode);
+ ushc->cbw->cmd_idx = req->cmd->opcode;
if (req->data)
ushc->cbw->block_size = cpu_to_le16(req->data->blksz);
else
--
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