On Thursday 13 November 2014 16:27:27 Jon Medhurst wrote: > 32-bit ARM kernels may have a 64-bit dma_addr_t but have no > implementation of the compiler helper for 64-bit unsigned division, > therefore the use of the modulo operator in pl330_prep_dma_memcpy causes > the link error "undefined reference to `__aeabi_uldivmod'" > > As the burst value is always a power of two we can fix the problem, and > make the code more efficient, by replacing "% burst" with "& (burst-1)". > > Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx> > Signed-off-by: Jon Medhurst <tixy@xxxxxxxxxx> > Just saw the same thing and was going to send a different patch, but yours is better. Acked-by: Arnd Bergmann <arnd@xxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
