On Mon, Feb 5, 2018 at 10:20 AM, Ross Zwisler <[email protected]> wrote: > On Mon, Feb 05, 2018 at 02:08:52PM +0000, Colin King wrote: >> From: Colin Ian King <[email protected]> >> >> Pointer dev is being assigned a value that is never read, it is being >> re-assigned the same value later on, hence the initialization is redundant >> and can be removed. >> >> Cleans up clang warning: >> drivers/nvdimm/pfn_devs.c:307:17: warning: Value stored to 'dev' during >> its initialization is never read >> >> Signed-off-by: Colin Ian King <[email protected]> > > Reviewed-by: Ross Zwisler <[email protected]> > > More importantly this fixes a potential NULL pointer dereference. nd_pfn > is checked for NULL a few lines down, but we would have crashed here trying to > get nd_pfn->dev. >
No we wouldn't crash. We're just calculating the address, not de-referencing a NULL pointer.
