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mmc: mmc_spi: Fix return value evaluation of irq_of_parse_and_map()
When irq_of_parse_and_map() returns an error, it does as zero. But in mmc_spi_get_pdata(), the error return case is compared against NO_IRQ. This might work where NO_IRQ is zero (defaults to zero when undefined, as on MIPS) but not where NO_IRQ is different, e.g. on ARM where it's -1. This patch changes to comparison with 0 which is the error return value of irq_of_parse_and_map(). Tested on ARM that mmc_spi is working now. Signed-off-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Chris Ball <cjb@laptop.org>
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@ -146,7 +146,7 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi)
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oms->pdata.get_ro = of_mmc_spi_get_ro;
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oms->detect_irq = irq_of_parse_and_map(np, 0);
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if (oms->detect_irq != NO_IRQ) {
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if (oms->detect_irq != 0) {
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oms->pdata.init = of_mmc_spi_init;
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oms->pdata.exit = of_mmc_spi_exit;
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} else {
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