irq_of_parse_and_map() returns EINVAL if there is no interrupt information available in device tree, not NO_IRQ. mmc_spi_get_pdata() doesn't account for error returns, and ends up trying to request_threaded_irq() with -22 as the IRQ value.
This patch checks for negative returns from irq_of_parse_and_map() as well as NO_IRQ, and uses polled mode in those cases. Signed-off-by: Chris Boot <[email protected]> --- drivers/mmc/host/of_mmc_spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c index 1534b58..d3e882a 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 != NO_IRQ && oms->detect_irq > 0) { oms->pdata.init = of_mmc_spi_init; oms->pdata.exit = of_mmc_spi_exit; } else { -- 1.7.10 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
