From 354312f16e49add1da78f0cfb2bcb633709d0071 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Tue, 11 Feb 2014 22:07:30 +0800
Subject: spi: Remove duplicate code to check chip_select

In spi_add_device(), we have the code to validate spi->chip_select.
So remove the duplicate code in various drivers.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index b0842f7..5488ab8 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -993,13 +993,6 @@ static int atmel_spi_setup(struct spi_device *spi)
 
 	as = spi_master_get_devdata(spi->master);
 
-	if (spi->chip_select > spi->master->num_chipselect) {
-		dev_dbg(&spi->dev,
-				"setup: invalid chipselect %u (%u defined)\n",
-				spi->chip_select, spi->master->num_chipselect);
-		return -EINVAL;
-	}
-
 	/* see notes above re chipselect */
 	if (!atmel_spi_is_v2(as)
 			&& spi->chip_select == 0
diff --git a/drivers/spi/spi-coldfire-qspi.c b/drivers/spi/spi-coldfire-qspi.c
index cabed8f..0ab2c55 100644
--- a/drivers/spi/spi-coldfire-qspi.c
+++ b/drivers/spi/spi-coldfire-qspi.c
@@ -356,12 +356,6 @@ static int mcfqspi_transfer_one_message(struct spi_master *master,
 
 static int mcfqspi_setup(struct spi_device *spi)
 {
-	if (spi->chip_select >= spi->master->num_chipselect) {
-		dev_dbg(&spi->dev, "%d chip select is out of range\n",
-			spi->chip_select);
-		return -EINVAL;
-	}
-
 	mcfqspi_cs_deselect(spi_master_get_devdata(spi->master),
 			    spi->chip_select, spi->mode & SPI_CS_HIGH);
 
diff --git a/drivers/spi/spi-falcon.c b/drivers/spi/spi-falcon.c
index dd5bd46..0ae7f45 100644
--- a/drivers/spi/spi-falcon.c
+++ b/drivers/spi/spi-falcon.c
@@ -312,9 +312,6 @@ static int falcon_sflash_setup(struct spi_device *spi)
 	unsigned int i;
 	unsigned long flags;
 
-	if (spi->chip_select > 0)
-		return -ENODEV;
-
 	spin_lock_irqsave(&ebu_lock, flags);
 
 	if (spi->max_speed_hz >= CLOCK_100M) {
diff --git a/drivers/spi/spi-mpc52xx.c b/drivers/spi/spi-mpc52xx.c
index 7c675fe..e3d29a5 100644
--- a/drivers/spi/spi-mpc52xx.c
+++ b/drivers/spi/spi-mpc52xx.c
@@ -365,9 +365,6 @@ static int mpc52xx_spi_setup(struct spi_device *spi)
 	if (spi->mode & ~(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST))
 		return -EINVAL;
 
-	if (spi->chip_select >= spi->master->num_chipselect)
-		return -EINVAL;
-
 	return 0;
 }
 
diff --git a/drivers/spi/spi-omap-uwire.c b/drivers/spi/spi-omap-uwire.c
index 9313fd3..462ddd4 100644
--- a/drivers/spi/spi-omap-uwire.c
+++ b/drivers/spi/spi-omap-uwire.c
@@ -332,12 +332,6 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
 
 	uwire = spi_master_get_devdata(spi->master);
 
-	if (spi->chip_select > 3) {
-		pr_debug("%s: cs%d?\n", dev_name(&spi->dev), spi->chip_select);
-		status = -ENODEV;
-		goto done;
-	}
-
 	bits = spi->bits_per_word;
 	if (t != NULL && t->bits_per_word)
 		bits = t->bits_per_word;
diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c
index d8c71b8..22905b5 100644
--- a/drivers/spi/spi-tegra114.c
+++ b/drivers/spi/spi-tegra114.c
@@ -760,8 +760,6 @@ static int tegra_spi_setup(struct spi_device *spi)
 		spi->mode & SPI_CPHA ? "" : "~",
 		spi->max_speed_hz);
 
-	BUG_ON(spi->chip_select >= MAX_CHIP_SELECT);
-
 	ret = pm_runtime_get_sync(tspi->dev);
 	if (ret < 0) {
 		dev_err(tspi->dev, "pm runtime failed, e = %d\n", ret);
diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index 9da14f2..593e823 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -760,8 +760,6 @@ static int tegra_slink_setup(struct spi_device *spi)
 		spi->mode & SPI_CPHA ? "" : "~",
 		spi->max_speed_hz);
 
-	BUG_ON(spi->chip_select >= MAX_CHIP_SELECT);
-
 	ret = pm_runtime_get_sync(tspi->dev);
 	if (ret < 0) {
 		dev_err(tspi->dev, "pm runtime failed, e = %d\n", ret);
-- 
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