Hi Mark, After merging the spi tree, today's linux-next build (x86_64 allmodconfig) failed like this: drivers/spi/spi-bcm2835.c: In function 'bcm2835_spi_can_dma': drivers/spi/spi-bcm2835.c:381:7: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] if (((u32)tfr->tx_buf % 4 == 0) && ((u32)tfr->tx_buf % 4 == 0)) ^ drivers/spi/spi-bcm2835.c:381:38: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] if (((u32)tfr->tx_buf % 4 == 0) && ((u32)tfr->tx_buf % 4 == 0)) ^ drivers/spi/spi-bcm2835.c:387:7: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] if (((u32)tfr->tx_buf % SZ_4K) + tfr->len > SZ_4K) { ^ drivers/spi/spi-bcm2835.c:387:26: error: 'SZ_4K' undeclared (first use in this function) if (((u32)tfr->tx_buf % SZ_4K) + tfr->len > SZ_4K) { ^ drivers/spi/spi-bcm2835.c:387:26: note: each undeclared identifier is reported only once for each function it appears in drivers/spi/spi-bcm2835.c:392:7: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] if (((u32)tfr->rx_buf % SZ_4K) + tfr->len > SZ_4K) { ^ Caused by commit 3ecd37edaa2a ("spi: bcm2835: enable dma modes for transfers meeting certain conditions"). I have used the spi tree from next-20150511 for today. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au