| Message ID | 10457b8c-401b-d473-0a24-30dfacb4eb48@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Heiner Kallweit <hkallweit1@gmail.com> writes: > If xfer_bytes is zero we can configure the chip to use the bounce > buffer as well because it won't get used anyway. > And we don't have to reset bit CMD_CFG_DATA_NUM because cmd_cfg > was zero-initialized and this bit isn't set. > > Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> > --- > drivers/mmc/host/meson-gx-mmc.c | 10 +--------- > 1 file changed, 1 insertion(+), 9 deletions(-) > > diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c > index c7bf0e12..423b4b17 100644 > --- a/drivers/mmc/host/meson-gx-mmc.c > +++ b/drivers/mmc/host/meson-gx-mmc.c > @@ -505,15 +505,7 @@ static void meson_mmc_start_cmd(struct mmc_host *mmc, struct mmc_command *cmd) > cmd_cfg &= ~CMD_CFG_DATA_WR; > } > > - if (xfer_bytes > 0) { > - cmd_cfg &= ~CMD_CFG_DATA_NUM; > - cmd_data = host->bounce_dma_addr & CMD_DATA_MASK; > - } else { > - /* write data to data_addr */ > - cmd_cfg |= CMD_CFG_DATA_NUM; > - cmd_data = 0; > - } > - > + cmd_data = host->bounce_dma_addr & CMD_DATA_MASK; Could use a comment above this, mentioning (similar to the changelog) that when CMD_CFG_DATA_NUM is set, this isn't used. Otherwise: Acked-by: Kevin Hilman <khilman@baylibre.com> -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c index c7bf0e12..423b4b17 100644 --- a/drivers/mmc/host/meson-gx-mmc.c +++ b/drivers/mmc/host/meson-gx-mmc.c @@ -505,15 +505,7 @@ static void meson_mmc_start_cmd(struct mmc_host *mmc, struct mmc_command *cmd) cmd_cfg &= ~CMD_CFG_DATA_WR; } - if (xfer_bytes > 0) { - cmd_cfg &= ~CMD_CFG_DATA_NUM; - cmd_data = host->bounce_dma_addr & CMD_DATA_MASK; - } else { - /* write data to data_addr */ - cmd_cfg |= CMD_CFG_DATA_NUM; - cmd_data = 0; - } - + cmd_data = host->bounce_dma_addr & CMD_DATA_MASK; cmd_cfg_timeout = 12; } else { cmd_cfg &= ~CMD_CFG_DATA_IO;
If xfer_bytes is zero we can configure the chip to use the bounce buffer as well because it won't get used anyway. And we don't have to reset bit CMD_CFG_DATA_NUM because cmd_cfg was zero-initialized and this bit isn't set. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> --- drivers/mmc/host/meson-gx-mmc.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-)