From: tpiepho@gmail.com (Trent Piepho)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2 06/12] spi/mxs: Remove full duplex check, spi core already does it
Date: Tue, 2 Apr 2013 05:19:49 -0700 [thread overview]
Message-ID: <1364905195-24286-6-git-send-email-tpiepho@gmail.com> (raw)
In-Reply-To: <1364905195-24286-1-git-send-email-tpiepho@gmail.com>
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 mxs driver as well.
Signed-off-by: Trent Piepho <tpiepho@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Shawn Guo <shawn.guo@linaro.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 ad3fd9c..208de97 100644
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -412,12 +412,6 @@ 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.
--
1.7.10.4
next prev parent reply other threads:[~2013-04-02 12:19 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-02 12:19 [PATCH V2 01/12] spi/mxs: Always set LOCK_CS Trent Piepho
2013-04-02 12:19 ` [PATCH V2 02/12] spi/mxs: Remove mxs_spi_enable and mxs_spi_disable Trent Piepho
2013-04-02 12:19 ` [PATCH V2 03/12] spi/mxs: Change flag arguments in txrx functions to bit flags Trent Piepho
2013-04-02 23:24 ` Marek Vasut
2013-04-02 12:19 ` [PATCH V2 04/12] spi/mxs: Fix extra CS pulses and read mode in multi-transfer messages Trent Piepho
2013-04-02 12:19 ` [PATCH V2 05/12] spi/mxs: Fix chip select control bits in DMA mode Trent Piepho
2013-04-02 23:29 ` Marek Vasut
2013-04-02 12:19 ` Trent Piepho [this message]
2013-04-02 12:19 ` [PATCH V2 07/12] spi/mxs: Remove bogus setting of ssp clk rate field Trent Piepho
2013-04-02 12:19 ` [PATCH V2 08/12] spi/mxs: Fix race in setup method Trent Piepho
2013-04-02 23:31 ` Marek Vasut
2013-04-03 2:12 ` Trent Piepho
2013-04-03 2:27 ` Marek Vasut
2013-04-03 6:08 ` Trent Piepho
2013-04-03 6:50 ` Marek Vasut
2013-04-03 9:32 ` Trent Piepho
2013-04-02 12:19 ` [PATCH V2 09/12] spi/mxs: Remove check of spi mode bits Trent Piepho
2013-04-02 12:19 ` [PATCH V2 10/12] spi/mxs: Clean up setup_transfer function Trent Piepho
2013-04-02 23:35 ` Marek Vasut
2013-04-02 12:19 ` [PATCH V2 11/12] spi/mxs: Don't set clock for each xfer Trent Piepho
2013-04-02 23:38 ` Marek Vasut
2013-04-02 12:19 ` [PATCH V2 12/12] spi/mxs: Use u32 instead of uint32_t Trent Piepho
2013-04-02 23:18 ` [PATCH V2 01/12] spi/mxs: Always set LOCK_CS Marek Vasut
2013-07-10 13:49 ` Fabio Estevam
2013-07-10 15:29 ` Lothar Waßmann
2013-04-03 1:41 ` Shawn Guo
2013-04-14 18:01 ` Marek Vasut
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