Currently the mtk-sd driver tries to get and map the second register base, named top_base in the code, regardless of whether the SoC model actually has it or not. This produces confusing big error messages on the platforms that don't need it: mtk-msdc 11260000.mmc: error -EINVAL: invalid resource (null) Limit it to the platforms that actually require it, based on their device tree entries, and properly fail if it is missing. Signed-off-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> --- drivers/mmc/host/mtk-sd.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index e2c385853eef..1bb7044f4ca1 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -414,6 +414,7 @@ struct mtk_mmc_compatible { u8 clk_div_bits; bool recheck_sdio_irq; bool hs400_tune; /* only used for MT8173 */ + bool needs_top_base; u32 pad_tune_reg; bool async_fifo; bool data_tune; @@ -587,6 +588,7 @@ static const struct mtk_mmc_compatible mt7986_compat = { .clk_div_bits = 12, .recheck_sdio_irq = true, .hs400_tune = false, + .needs_top_base = true, .pad_tune_reg = MSDC_PAD_TUNE0, .async_fifo = true, .data_tune = true, @@ -627,6 +629,7 @@ static const struct mtk_mmc_compatible mt8183_compat = { .clk_div_bits = 12, .recheck_sdio_irq = false, .hs400_tune = false, + .needs_top_base = true, .pad_tune_reg = MSDC_PAD_TUNE0, .async_fifo = true, .data_tune = true, @@ -653,6 +656,7 @@ static const struct mtk_mmc_compatible mt8196_compat = { .clk_div_bits = 12, .recheck_sdio_irq = false, .hs400_tune = false, + .needs_top_base = true, .pad_tune_reg = MSDC_PAD_TUNE0, .async_fifo = true, .data_tune = true, @@ -2887,9 +2891,13 @@ static int msdc_drv_probe(struct platform_device *pdev) if (IS_ERR(host->base)) return PTR_ERR(host->base); - host->top_base = devm_platform_ioremap_resource(pdev, 1); - if (IS_ERR(host->top_base)) - host->top_base = NULL; + host->dev_comp = of_device_get_match_data(&pdev->dev); + + if (host->dev_comp->needs_top_base) { + host->top_base = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(host->top_base)) + return PTR_ERR(host->top_base); + } ret = mmc_regulator_get_supply(mmc); if (ret) @@ -2951,7 +2959,6 @@ static int msdc_drv_probe(struct platform_device *pdev) msdc_of_property_parse(pdev, host); host->dev = &pdev->dev; - host->dev_comp = of_device_get_match_data(&pdev->dev); host->src_clk_freq = clk_get_rate(host->src_clk); /* Set host parameters to mmc */ mmc->ops = &mt_msdc_ops; -- 2.47.0.338.g60cca15819-goog