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mmc: meson-gx: simplify bounce buffer setting in meson_mmc_start_cmd 

Core ensures that there are no commands with cmd->data being set and
nothing to transfer. 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>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Heiner Kallweit 2017-03-04 13:19:23 +01:00 committed by Ulf Hansson
parent bc2dcc1a2a
commit 94d765bbfb
1 changed files with 1 additions and 8 deletions
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9
drivers/mmc/host/meson-gx-mmc.c
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@ -516,14 +516,7 @@ static void meson_mmc_start_cmd(struct mmc_host *mmc, struct mmc_command *cmd)
desc->cmd_cfg &= ~CMD_CFG_DATA_WR;
}
if (xfer_bytes > 0) {
desc->cmd_cfg &= ~CMD_CFG_DATA_NUM;
desc->cmd_data = host->bounce_dma_addr & CMD_DATA_MASK;
} else {
/* write data to data_addr */
desc->cmd_cfg |= CMD_CFG_DATA_NUM;
desc->cmd_data = 0;
}
desc->cmd_data = host->bounce_dma_addr & CMD_DATA_MASK;
cmd_cfg_timeout = 12;
} else {