Hello! On 04/13/2018 05:10 PM, Wolfram Sang wrote:
> Early revisions of certain SoCs cannot do multiple DMA RX streams in > parallel. To avoid data corruption, only allow one DMA RX channel and > fall back to PIO, if needed. > > Signed-off-by: Wolfram Sang <wsa+rene...@sang-engineering.com> > Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda...@renesas.com> > Tested-by: Nguyen Viet Dung <dung.nguyen...@renesas.com> > --- > drivers/mmc/host/renesas_sdhi_internal_dmac.c | 34 > ++++++++++++++++++++++++--- > 1 file changed, 31 insertions(+), 3 deletions(-) > > diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c > b/drivers/mmc/host/renesas_sdhi_internal_dmac.c > index 8e0acd197c43..c8d479375fb6 100644 > --- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c > +++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c [...] > @@ -251,18 +273,24 @@ static const struct tmio_mmc_dma_ops > renesas_sdhi_internal_dmac_dma_ops = { > * implementation as others may use a different implementation. > */ > static const struct soc_device_attribute gen3_soc_whitelist[] = { > - { .soc_id = "r8a7795", .revision = "ES1.*" }, > + { .soc_id = "r8a7795", .revision = "ES1.*", > + .data = (void *)BIT(SDHI_INTERNAL_DMAC_ONE_RX_ONLY) }, > { .soc_id = "r8a7795", .revision = "ES2.0" }, > - { .soc_id = "r8a7796", .revision = "ES1.0" }, > + { .soc_id = "r8a7796", .revision = "ES1.0", > + .data = (void *)BIT(SDHI_INTERNAL_DMAC_ONE_RX_ONLY) }, Again, could you fix the indentation while updating these 2 initializers? checkpatch.pl complains about the spaces... > { .soc_id = "r8a77995", .revision = "ES1.0" }, > { /* sentinel */ } > }; MBR, Sergei