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3d0fed711e
* message pump conversion * not using stopping state * setting spi driver mode bits git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32078 3c298f89-4303-0410-b956-a3cf2f4a3e73
69 lines
1.9 KiB
Diff
69 lines
1.9 KiB
Diff
From 1e41dc0ee2f3807328db95e4f87ff1333245190f Mon Sep 17 00:00:00 2001
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From: Florian Fainelli <florian@openwrt.org>
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Date: Fri, 20 Apr 2012 15:37:34 +0200
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Subject: [PATCH] spi/bcm63xx: don't use the stopping state
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We do not need to use a flag to indicate if the master driver is stopping
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it is sufficient to perform spi master unregistering in the platform
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driver's remove function.
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Signed-off-by: Florian Fainelli <florian@openwrt.org>
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Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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---
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drivers/spi/spi-bcm63xx.c | 13 ++-----------
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1 file changed, 2 insertions(+), 11 deletions(-)
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--- a/drivers/spi/spi-bcm63xx.c
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+++ b/drivers/spi/spi-bcm63xx.c
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@@ -39,8 +39,6 @@
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#define DRV_VER "0.1.2"
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struct bcm63xx_spi {
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- spinlock_t lock;
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- int stopping;
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struct completion done;
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void __iomem *regs;
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@@ -161,9 +159,6 @@ static int bcm63xx_spi_setup(struct spi_
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bs = spi_master_get_devdata(spi->master);
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- if (bs->stopping)
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- return -ESHUTDOWN;
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-
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if (!spi->bits_per_word)
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spi->bits_per_word = 8;
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@@ -410,10 +405,8 @@ static int __devinit bcm63xx_spi_probe(s
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master->unprepare_transfer_hardware = bcm63xx_spi_unprepare_transfer;
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master->transfer_one_message = bcm63xx_spi_transfer_one;
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bs->speed_hz = pdata->speed_hz;
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- bs->stopping = 0;
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bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA));
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bs->rx_io = (const u8 *)(bs->regs + bcm63xx_spireg(SPI_RX_DATA));
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- spin_lock_init(&bs->lock);
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/* Initialize hardware */
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clk_enable(bs->clk);
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@@ -447,18 +440,16 @@ static int __devexit bcm63xx_spi_remove(
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struct spi_master *master = platform_get_drvdata(pdev);
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struct bcm63xx_spi *bs = spi_master_get_devdata(master);
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+ spi_unregister_master(master);
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+
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/* reset spi block */
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bcm_spi_writeb(bs, 0, SPI_INT_MASK);
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- spin_lock(&bs->lock);
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- bs->stopping = 1;
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/* HW shutdown */
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clk_disable(bs->clk);
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clk_put(bs->clk);
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- spin_unlock(&bs->lock);
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platform_set_drvdata(pdev, 0);
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- spi_unregister_master(master);
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return 0;
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}
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