kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

spi/mpc83xx: fix NULL pdata dereference bug

Browse source 
Commit 178db7d3, "spi: Fix device unregistration when unregistering
the bus master", changed device initialization to be children of the
bus master, not children of the bus masters parent device. The pdata
pointer used in fsl_spi_chipselect must updated to reflect the changed
initialization.

Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com>
Acked-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Kenth Eriksson 2012-03-30 17:05:30 +02:00 committed by Grant Likely
parent 9232b9b1b5
commit 5039a86973
1 changed files with 3 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/spi/spi-fsl-spi.c
View file

@ -139,10 +139,12 @@ static void fsl_spi_change_mode(struct spi_device *spi)
static void fsl_spi_chipselect(struct spi_device *spi, int value)
{
struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master);
struct fsl_spi_platform_data *pdata = spi->dev.parent->platform_data;
struct fsl_spi_platform_data *pdata;
bool pol = spi->mode & SPI_CS_HIGH;
struct spi_mpc8xxx_cs *cs = spi->controller_state;
pdata = spi->dev.parent->parent->platform_data;
if (value == BITBANG_CS_INACTIVE) {
if (pdata->cs_control)
pdata->cs_control(spi, !pol);