From: Anup Patel Date: Wed, 24 Jul 2019 04:09:37 +0000 (+0000) Subject: net: macb: Fix check for little-endian system in gmac_configure_dma() X-Git-Tag: v2019.10-rc1~11^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=eff0e0c76f529c57bc0e1f8d16d0060cb08a5ebf;p=platform%2Fkernel%2Fu-boot.git net: macb: Fix check for little-endian system in gmac_configure_dma() Instead of depending on CONFIG_SYS_LITTLE_ENDIAN, we check at runtime whether underlying system is little-endian or big-endian. This way we are not dependent on any U-Boot specific OR compiler specific macro to check system endianness. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Ramon Fried Acked-by: Joe Hershberger --- diff --git a/drivers/net/macb.c b/drivers/net/macb.c index f72d3ad..c99cf66 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -91,6 +91,8 @@ struct macb_dma_desc { struct macb_device { void *regs; + bool is_big_endian; + const struct macb_config *config; unsigned int rx_tail; @@ -754,11 +756,10 @@ static void gmac_configure_dma(struct macb_device *macb) dmacfg |= GEM_BIT(TXPBMS) | GEM_BF(RXBMS, -1L); dmacfg &= ~GEM_BIT(ENDIA_PKT); -#ifdef CONFIG_SYS_LITTLE_ENDIAN - dmacfg &= ~GEM_BIT(ENDIA_DESC); -#else + if (macb->is_big_endian) dmacfg |= GEM_BIT(ENDIA_DESC); /* CPU in big endian */ -#endif + else + dmacfg &= ~GEM_BIT(ENDIA_DESC); dmacfg &= ~GEM_BIT(ADDR64); gem_writel(macb, DMACFG, dmacfg); @@ -1239,6 +1240,8 @@ static int macb_eth_probe(struct udevice *dev) macb->regs = (void *)pdata->iobase; + macb->is_big_endian = (cpu_to_be32(0x12345678) == 0x12345678); + macb->config = (struct macb_config *)dev_get_driver_data(dev); if (!macb->config) macb->config = &default_gem_config;