Messages in this thread Patch in this message | | | Date | Wed, 27 Jun 2012 12:02:58 +0300 | From | Dan Carpenter <> | Subject | [patch -resend] mmc: ushc: fix an endianness conversion in ushc_request() |
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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@oracle.com> --- 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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