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spi: fsl: Kill mpc8xxx_spi_cleanup and convert fsl_espi_setup to use devm_kzalloc 

In current code, master->cleanup and master->setup are not set in the same
function. This makes it hard to read and not good for code maintain.
One example is in fsl-spi.c, master->cleanup is overrided in mpc8xxx_spi_probe()
which leads to a memory leak.

This patch removes mpc8xxx_spi_cleanup() and converts fsl_espi_setup to use
devm_kzalloc so we don't need to take care of freeing memory.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Axel Lin 2014-03-30 16:43:23 +08:00 committed by Mark Brown
parent c9eaa447e7
commit abcadeb255
3 changed files with 1 additions and 8 deletions
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2
drivers/spi/spi-fsl-espi.c
View File

@ -458,7 +458,7 @@ static int fsl_espi_setup(struct spi_device *spi)
return -EINVAL;
if (!cs) {
cs = kzalloc(sizeof *cs, GFP_KERNEL);
cs = devm_kzalloc(&spi->dev, sizeof(*cs), GFP_KERNEL);
if (!cs)
return -ENOMEM;
spi->controller_state = cs;

6
drivers/spi/spi-fsl-lib.c
View File

@ -99,11 +99,6 @@ int mpc8xxx_spi_transfer(struct spi_device *spi,
return 0;
}
void mpc8xxx_spi_cleanup(struct spi_device *spi)
{
kfree(spi->controller_state);
}
const char *mpc8xxx_spi_strmode(unsigned int flags)
{
if (flags & SPI_QE_CPU_MODE) {
@ -134,7 +129,6 @@ int mpc8xxx_spi_probe(struct device *dev, struct resource *mem,
| SPI_LSB_FIRST | SPI_LOOP;
master->transfer = mpc8xxx_spi_transfer;
master->cleanup = mpc8xxx_spi_cleanup;
master->dev.of_node = dev->of_node;
mpc8xxx_spi = spi_master_get_devdata(master);

1
drivers/spi/spi-fsl-lib.h
View File

@ -124,7 +124,6 @@ extern struct mpc8xxx_spi_probe_info *to_of_pinfo(
extern int mpc8xxx_spi_bufs(struct mpc8xxx_spi *mspi,
struct spi_transfer *t, unsigned int len);
extern int mpc8xxx_spi_transfer(struct spi_device *spi, struct spi_message *m);
extern void mpc8xxx_spi_cleanup(struct spi_device *spi);
extern const char *mpc8xxx_spi_strmode(unsigned int flags);
extern int mpc8xxx_spi_probe(struct device *dev, struct resource *mem,
unsigned int irq);