Commit 7e6c35fe authored Mar 12, 2018 by Abhishek Sahu Committed by Wolfram Sang Mar 24, 2018

i2c: qup: fix the transfer length for BAM RX EOT FLUSH tags



In case of FLUSH operation, BAM copies INPUT EOT FLUSH (0x94)
instead of normal EOT (0x93) tag in input data stream when an
input EOT tag is received during flush operation. So only one tag
will be written instead of 2 separate tags.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

parent c5adc0fa

drivers/i2c/busses/i2c-qup.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -774,10 +774,10 @@ static int qup_i2c_bam_do_xfer(struct qup_i2c_dev qup, struct i2c_msg msg,
		qup->btx.tag.start[0] = QUP_BAM_INPUT_EOT;
		len++;

		/* scratch buf to read the BAM EOT and FLUSH tags */
		/* scratch buf to read the BAM EOT FLUSH tags */
		ret = qup_sg_set_buf(&qup->brx.sg[rx_cnt++],
		&qup->brx.tag.start[0],
		2, qup, DMA_FROM_DEVICE);
		1, qup, DMA_FROM_DEVICE);
		if (ret)
		return ret;
		}

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