mmc: sdhci-pxav3: fix setting of pdata->clk_delay_cycles
Current code checks "clk_delay_cycles > 0" to know whether the optional "mrvl,clk_delay_cycles" is set or not. But of_property_read_u32() doesn't touch clk_delay_cycles if the property is not set. And type of clk_delay_cycles is u32, so we may always set pdata->clk_delay_cycles as a random value. This patch fix this problem by check the return value of of_property_read_u32() to know whether the optional clk-delay-cycles is set or not. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Cc: <stable@vger.kernel.org> # v3.6+ Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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@ -268,8 +268,8 @@ static struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
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if (!pdata)
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return NULL;
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of_property_read_u32(np, "mrvl,clk-delay-cycles", &clk_delay_cycles);
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if (clk_delay_cycles > 0)
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if (!of_property_read_u32(np, "mrvl,clk-delay-cycles",
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&clk_delay_cycles))
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pdata->clk_delay_cycles = clk_delay_cycles;
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return pdata;
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