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From 1e41dc0ee2f3807328db95e4f87ff1333245190f Mon Sep 17 00:00:00 2001
From: Florian Fainelli <florian@openwrt.org>
Date: Fri, 20 Apr 2012 15:37:34 +0200
Subject: [PATCH] spi/bcm63xx: don't use the stopping state
We do not need to use a flag to indicate if the master driver is stopping
it is sufficient to perform spi master unregistering in the platform
driver's remove function.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
drivers/spi/spi-bcm63xx.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
--- a/drivers/spi/spi-bcm63xx.c
+++ b/drivers/spi/spi-bcm63xx.c
@@ -39,8 +39,6 @@
#define DRV_VER "0.1.2"
struct bcm63xx_spi {
- spinlock_t lock;
- int stopping;
struct completion done;
void __iomem *regs;
@@ -161,9 +159,6 @@ static int bcm63xx_spi_setup(struct spi_
bs = spi_master_get_devdata(spi->master);
- if (bs->stopping)
- return -ESHUTDOWN;
-
if (!spi->bits_per_word)
spi->bits_per_word = 8;
@@ -410,10 +405,8 @@ static int __devinit bcm63xx_spi_probe(s
master->unprepare_transfer_hardware = bcm63xx_spi_unprepare_transfer;
master->transfer_one_message = bcm63xx_spi_transfer_one;
bs->speed_hz = pdata->speed_hz;
- bs->stopping = 0;
bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA));
bs->rx_io = (const u8 *)(bs->regs + bcm63xx_spireg(SPI_RX_DATA));
- spin_lock_init(&bs->lock);
/* Initialize hardware */
clk_enable(bs->clk);
@@ -447,18 +440,16 @@ static int __devexit bcm63xx_spi_remove(
struct spi_master *master = platform_get_drvdata(pdev);
struct bcm63xx_spi *bs = spi_master_get_devdata(master);
+ spi_unregister_master(master);
+
/* reset spi block */
bcm_spi_writeb(bs, 0, SPI_INT_MASK);
- spin_lock(&bs->lock);
- bs->stopping = 1;
/* HW shutdown */
clk_disable(bs->clk);
clk_put(bs->clk);
- spin_unlock(&bs->lock);
platform_set_drvdata(pdev, 0);
- spi_unregister_master(master);
return 0;
}
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