mfd: cros_ec: Free IRQ on exit

Currently we request the irq when probing, but never free it. So after
unbind ec driver, this irq will be left requested, which would break
the next bind:

[ 2683.338437] genirq: Flags mismatch irq 64. 00002008 (chromeos-ec) vs. 00002008 (chromeos-ec)
[ 2683.338591] cros-ec-spi spi5.0: request irq 64: error -16
[ 2683.338610] cros-ec-spi spi5.0: cannot register EC
[ 2683.338656] cros-ec-spi: probe of spi5.0 failed with error -16

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c
index e31ac60a76231d1b6cf0582ce143f0e49a56131c..dc6ce90916949d0821ca5d72f27d266a99294dab 100644 (file)
--- a/drivers/mfd/cros_ec.c
+++ b/drivers/mfd/cros_ec.c
@@ -183,6 +183,9 @@ int cros_ec_remove(struct cros_ec_device *ec_dev)
 
        cros_ec_acpi_remove_gpe_handler();
 
+       if (ec_dev->irq)
+               free_irq(ec_dev->irq, ec_dev);
+
        return 0;
 }
 EXPORT_SYMBOL(cros_ec_remove);