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mmc: renesas_sdhi_internal_dmac: remove superfluous WARN

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The WARN can never trigger because we limited the max_seg number in
renesas_sdhi_of_data already. Remove it and update the comment.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2018-04-18 20:21:01 +02:00 committed by Ulf Hansson
parent 1abf9e52ea
commit ebca50dfae
1 changed files with 1 additions and 4 deletions
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5
drivers/mmc/host/renesas_sdhi_internal_dmac.c
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@ -91,7 +91,7 @@ static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = {
.scc_offset = 0x1000,
.taps = rcar_gen3_scc_taps,
.taps_num = ARRAY_SIZE(rcar_gen3_scc_taps),
/* Gen3 SDHI DMAC can handle 0xffffffff blk count, but seg = 1 */
/* DMAC can handle 0xffffffff blk count but only 1 segment */
.max_blk_count = 0xffffffff,
.max_segs = 1,
};
@ -158,9 +158,6 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host,
struct scatterlist *sg = host->sg_ptr;
u32 dtran_mode = DTRAN_MODE_BUS_WID_TH | DTRAN_MODE_ADDR_MODE;
/* This DMAC cannot handle if sg_len is not 1 */
WARN_ON(host->sg_len > 1);
if (!dma_map_sg(&host->pdev->dev, sg, host->sg_len,
mmc_get_dma_dir(data)))
goto force_pio;