From: Trent Piepho <tpiepho-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>,
Fabio Estevam
<fabio.estevam-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
Shawn Guo <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Subject: [PATCH 07/13] spi: spi-mxs: Remove full duplex check, spi core already does it
Date: Tue, 01 Oct 2013 13:15:11 -0700 [thread overview]
Message-ID: <20131001201511.13660.36973.stgit@Graphine> (raw)
In-Reply-To: <20131001201425.13660.72740.stgit@Graphine>
Because the driver sets the SPI_MASTER_HALF_DUPLEX flag, the spi core
will check transfers to insure they are not full duplex. It's not
necessary to check that in the spi-mxs driver as well.
Signed-off-by: Trent Piepho <tpiepho-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
Cc: Fabio Estevam <fabio.estevam-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: Shawn Guo <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
---
drivers/spi/spi-mxs.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c
index a9a273e..de7387e 100644
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -399,12 +399,6 @@ static int mxs_spi_transfer_one(struct spi_master *master,
/* De-assert on last transfer, inverted by cs_change flag */
flag = (&t->transfer_list == m->transfers.prev) ^ t->cs_change ?
TXRX_DEASSERT_CS : 0;
- if ((t->rx_buf && t->tx_buf) || (t->rx_dma && t->tx_dma)) {
- dev_err(ssp->dev,
- "Cannot send and receive simultaneously\n");
- status = -EINVAL;
- break;
- }
/*
* Small blocks can be transfered via PIO.
------------------------------------------------------------------------------
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next prev parent reply other threads:[~2013-10-01 20:15 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-01 20:14 [PATCH 01/13] spi: spi-mxs: Always set LOCK_CS Trent Piepho
2013-10-01 20:14 ` [PATCH 02/13] spi: spi-mxs: Remove mxs_spi_enable and mxs_spi_disable Trent Piepho
2013-10-01 20:14 ` [PATCH 03/13] spi: spi-mxs: Always clear INGORE_CRC, to keep CS asserted Trent Piepho
2013-10-01 20:14 ` [PATCH 04/13] spi: spi-mxs: Change flag arguments in txrx functions to bit flags Trent Piepho
2013-10-01 20:14 ` [PATCH 05/13] spi: spi-mxs: Fix extra CS pulses and read mode in multi-transfer messages Trent Piepho
2013-10-01 20:15 ` [PATCH 06/13] spi: spi-mxs: Fix chip select control bits in DMA mode Trent Piepho
2013-10-01 20:15 ` Trent Piepho [this message]
2013-10-01 20:15 ` [PATCH 08/13] spi: spi-mxs: Remove bogus setting of ssp clk rate field Trent Piepho
2013-10-01 20:15 ` [PATCH 09/13] spi: spi-mxs: Fix race in setup method Trent Piepho
2013-10-01 20:15 ` [PATCH 10/13] spi: spi-mxs: Remove check of spi mode bits Trent Piepho
2013-10-01 20:15 ` [PATCH 11/13] spi: spi-mxs: Clean up setup_transfer function Trent Piepho
2013-10-01 20:15 ` [PATCH 12/13] spi: spi-mxs: Don't set clock for each xfer Trent Piepho
2013-10-01 20:15 ` [PATCH 13/13] spi: spi-mxs: Use u32 instead of uint32_t Trent Piepho
2013-10-03 16:02 ` [PATCH 01/13] spi: spi-mxs: Always set LOCK_CS Marek Vasut
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