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Date: Thu, 19 Apr 2012 19:05:37 +0300
From: Hannu Heikkinen <hannuxx@....fi>
To: linux-kernel@...r.kernel.org,
spi-devel-general@...ts.sourceforge.net
Cc: grant.likely@...retlab.ca, mika.westerberg@....fi,
hartleys@...ionengravers.com
Subject: [PATCH v3] spi/ep93xx: clean probe/remove routines
Use devm_* functions for managing devres resources.
Also use local variable irq and remove irq variable from
struct ep93xx_spi, as it is needed only in probe routine.
Acked-by: Mika Westerberg <mika.westerberg@....fi>
Acked-by: H Hartley Sweeten <hsweeten@...ionengravers.com>
Signed-off-by: Hannu Heikkinen <hannuxx@....fi>
---
drivers/spi/spi-ep93xx.c | 37 ++++++++++---------------------------
1 file changed, 10 insertions(+), 27 deletions(-)
diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index 6db2887..ea78625 100644
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -76,7 +76,6 @@
* @clk: clock for the controller
* @regs_base: pointer to ioremap()'d registers
* @sspdr_phys: physical address of the SSPDR register
- * @irq: IRQ number used by the driver
* @min_rate: minimum clock rate (in Hz) supported by the controller
* @max_rate: maximum clock rate (in Hz) supported by the controller
* @running: is the queue running
@@ -114,7 +113,6 @@ struct ep93xx_spi {
struct clk *clk;
void __iomem *regs_base;
unsigned long sspdr_phys;
- int irq;
unsigned long min_rate;
unsigned long max_rate;
bool running;
@@ -1035,6 +1033,7 @@ static int __devinit ep93xx_spi_probe(struct platform_device *pdev)
struct ep93xx_spi_info *info;
struct ep93xx_spi *espi;
struct resource *res;
+ int irq;
int error;
info = pdev->dev.platform_data;
@@ -1074,8 +1073,8 @@ static int __devinit ep93xx_spi_probe(struct platform_device *pdev)
espi->min_rate = clk_get_rate(espi->clk) / (254 * 256);
espi->pdev = pdev;
- espi->irq = platform_get_irq(pdev, 0);
- if (espi->irq < 0) {
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
error = -EBUSY;
dev_err(&pdev->dev, "failed to get irq resources\n");
goto fail_put_clock;
@@ -1088,26 +1087,20 @@ static int __devinit ep93xx_spi_probe(struct platform_device *pdev)
goto fail_put_clock;
}
- res = request_mem_region(res->start, resource_size(res), pdev->name);
- if (!res) {
- dev_err(&pdev->dev, "unable to request iomem resources\n");
- error = -EBUSY;
- goto fail_put_clock;
- }
-
espi->sspdr_phys = res->start + SSPDR;
- espi->regs_base = ioremap(res->start, resource_size(res));
+
+ espi->regs_base = devm_request_and_ioremap(&pdev->dev, res);
if (!espi->regs_base) {
dev_err(&pdev->dev, "failed to map resources\n");
error = -ENODEV;
- goto fail_free_mem;
+ goto fail_put_clock;
}
- error = request_irq(espi->irq, ep93xx_spi_interrupt, 0,
- "ep93xx-spi", espi);
+ error = devm_request_irq(&pdev->dev, irq, ep93xx_spi_interrupt,
+ 0, "ep93xx-spi", espi);
if (error) {
dev_err(&pdev->dev, "failed to request irq\n");
- goto fail_unmap_regs;
+ goto fail_put_clock;
}
if (info->use_dma && ep93xx_spi_setup_dma(espi))
@@ -1132,7 +1125,7 @@ static int __devinit ep93xx_spi_probe(struct platform_device *pdev)
}
dev_info(&pdev->dev, "EP93xx SPI Controller at 0x%08lx irq %d\n",
- (unsigned long)res->start, espi->irq);
+ (unsigned long)res->start, irq);
return 0;
@@ -1140,11 +1133,6 @@ fail_free_queue:
destroy_workqueue(espi->wq);
fail_free_dma:
ep93xx_spi_release_dma(espi);
- free_irq(espi->irq, espi);
-fail_unmap_regs:
- iounmap(espi->regs_base);
-fail_free_mem:
- release_mem_region(res->start, resource_size(res));
fail_put_clock:
clk_put(espi->clk);
fail_release_master:
@@ -1158,7 +1146,6 @@ static int __devexit ep93xx_spi_remove(struct platform_device *pdev)
{
struct spi_master *master = platform_get_drvdata(pdev);
struct ep93xx_spi *espi = spi_master_get_devdata(master);
- struct resource *res;
spin_lock_irq(&espi->lock);
espi->running = false;
@@ -1184,10 +1171,6 @@ static int __devexit ep93xx_spi_remove(struct platform_device *pdev)
spin_unlock_irq(&espi->lock);
ep93xx_spi_release_dma(espi);
- free_irq(espi->irq, espi);
- iounmap(espi->regs_base);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, resource_size(res));
clk_put(espi->clk);
platform_set_drvdata(pdev, NULL);
--
1.7.9.5
--
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