powerpc/fsl-lbc: Fix for fsl_upm

If Freescale LBC driver fails to initialise itself from device tree, then
internal structure is freed only but not NULL-fied.  As result functions
fsl_lbc_find() after checking the structure is not NULL are trying to
access device registers.

Signed-off-by: Alexandre Rusev <arusev@dev.rtsoft.ru>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/arch/powerpc/sysdev/fsl_lbc.c b/arch/powerpc/sysdev/fsl_lbc.c
index c4d96fa32ba557a68512b133400fef585e799eb4..d5c3c90ee6981a14d40da0175f3d3ddc0c0f77f4 100644 (file)
--- a/arch/powerpc/sysdev/fsl_lbc.c
+++ b/arch/powerpc/sysdev/fsl_lbc.c
@@ -328,6 +328,7 @@ static int __devinit fsl_lbc_ctrl_probe(struct platform_device *dev)
 err:
        iounmap(fsl_lbc_ctrl_dev->regs);
        kfree(fsl_lbc_ctrl_dev);
+       fsl_lbc_ctrl_dev = NULL;
        return ret;
 }