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powerpc/virtex/spi: Xilinx SPI driver not releasing memory

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The driver was not releasing memory when it was removed or
when there was a failure during probe. This fixes it.

Signed-off-by: John Linn <john.linn@xilinx.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
John Linn 2009-03-11 09:36:20 -06:00 committed by Grant Likely
parent e7eec2fc27
commit 1df879e4bb
1 changed files with 7 additions and 2 deletions
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9
drivers/spi/xilinx_spi.c
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@ -354,7 +354,7 @@ static int __init xilinx_spi_of_probe(struct of_device *ofdev,
if (xspi->regs == NULL) {
rc = -ENOMEM;
dev_warn(&ofdev->dev, "ioremap failure\n");
goto put_master;
goto release_mem;
}
xspi->irq = r_irq->start;
@ -365,7 +365,7 @@ static int __init xilinx_spi_of_probe(struct of_device *ofdev,
prop = of_get_property(ofdev->node, "xlnx,num-ss-bits", &len);
if (!prop || len < sizeof(*prop)) {
dev_warn(&ofdev->dev, "no 'xlnx,num-ss-bits' property\n");
goto put_master;
goto unmap_io;
}
master->num_chipselect = *prop;
@ -397,6 +397,8 @@ free_irq:
free_irq(xspi->irq, xspi);
unmap_io:
iounmap(xspi->regs);
release_mem:
release_mem_region(r_mem->start, resource_size(r_mem));
put_master:
spi_master_put(master);
return rc;
@ -406,6 +408,7 @@ static int __devexit xilinx_spi_remove(struct of_device *ofdev)
{
struct xilinx_spi *xspi;
struct spi_master *master;
struct resource r_mem;
master = platform_get_drvdata(ofdev);
xspi = spi_master_get_devdata(master);
@ -413,6 +416,8 @@ static int __devexit xilinx_spi_remove(struct of_device *ofdev)
spi_bitbang_stop(&xspi->bitbang);
free_irq(xspi->irq, xspi);
iounmap(xspi->regs);
if (!of_address_to_resource(ofdev->node, 0, &r_mem))
release_mem_region(r_mem.start, resource_size(&r_mem));
dev_set_drvdata(&ofdev->dev, 0);
spi_master_put(xspi->bitbang.master);