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 sth. different, e.g. on ARM, where it is -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@xxxxxxxxx>
diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c
index 1534b58..d720b5e 100644
--- a/drivers/mmc/host/of_mmc_spi.c
+++ b/drivers/mmc/host/of_mmc_spi.c
@@ -146,7 +146,7 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi)
oms->pdata.get_ro = of_mmc_spi_get_ro;
oms->detect_irq = irq_of_parse_and_map(np, 0);
- if (oms->detect_irq != NO_IRQ) {
+ if (oms->detect_irq != 0) {
oms->pdata.init = of_mmc_spi_init;
oms->pdata.exit = of_mmc_spi_exit;
} else {
--
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