On Tue, Oct 06, 2015 at 10:37:11PM +0200, Arnd Bergmann wrote: > Compiling the nvme driver on 32-bit warns about a cast from a __u64 > variable to a pointer: > > drivers/block/nvme-core.c: In function 'nvme_submit_io': > drivers/block/nvme-core.c:1847:4: warning: cast to pointer from integer of > different size [-Wint-to-pointer-cast] > (void __user *)io.addr, length, NULL, 0); > > The cast here is intentional and safe, so we can shut up the > gcc warning by adding an intermediate cast to 'unsigned long'.
It really should be a uintptr_t, which would also avoid the > 80 character lines. I wonder if we need a u64_to_ptr helper given these ioctl ABIs that pass pointers as a u64 seems to be everywhere these days. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
