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| author | Guenter Roeck <linux@roeck-us.net> | 2012-08-10 13:56:27 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-08-13 13:29:20 +0100 |
| commit | 1f68237865b2f55badbb3f73792d573899a62475 (patch) | |
| tree | a411b3fe35a39e8a4f6d3cb25939eead5e85501a | |
| parent | 37a2d84a38df16e614bbfbb18a5155ebd8256938 (diff) | |
| download | op-kernel-dev-1f68237865b2f55badbb3f73792d573899a62475.zip op-kernel-dev-1f68237865b2f55badbb3f73792d573899a62475.tar.gz | |
spi/bcm63xx: Ensure that memory is freed only after it is no longer used
The call to spi_unregister_master() in the device remove function frees device
memory, and with it any device local data. However, device local data is still
accessed after the call to spi_unregister_master().
Acquire a reference to the SPI device and release it after cleanup is complete
to solve the problem.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | drivers/spi/spi-bcm63xx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index 6e25ef1..ea0aaa3 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -438,7 +438,7 @@ out: static int __devexit bcm63xx_spi_remove(struct platform_device *pdev) { - struct spi_master *master = platform_get_drvdata(pdev); + struct spi_master *master = spi_master_get(platform_get_drvdata(pdev)); struct bcm63xx_spi *bs = spi_master_get_devdata(master); spi_unregister_master(master); @@ -452,6 +452,8 @@ static int __devexit bcm63xx_spi_remove(struct platform_device *pdev) platform_set_drvdata(pdev, 0); + spi_master_put(master); + return 0; } |
