On Sat, May 17, 2014 at 07:14:08PM +0200, Rickard Strandqvist wrote: > There is otherwise a risk of a possible null pointer dereference. > > Was largely found by using a static code analysis program called cppcheck. It is useful to put the output of the analyzer here. > > Signed-off-by: Rickard Strandqvist <rickard_strandqvist@xxxxxxxxxxxxxxxxxx> > --- > drivers/i2c/busses/i2c-pxa.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c > index bbe6dfb..dbe5ebe 100644 > --- a/drivers/i2c/busses/i2c-pxa.c > +++ b/drivers/i2c/busses/i2c-pxa.c > @@ -1269,7 +1269,9 @@ eremap: > eclk: > kfree(i2c); > emalloc: > - release_mem_region(res->start, resource_size(res)); > + if(res) { > + release_mem_region(res->start, resource_size(res)); > + } The proper fix is to move the release to the proper place, before kfree. Even better would probably be a devm_* conversion.
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