linux-kernel - [PATCH 2/6] mfd: cros_ec: free IRQ automatically

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Message-Id: <20180219224043.21383-1-enric.balletbo@collabora.com>
Date:   Mon, 19 Feb 2018 23:40:43 +0100
From:   Enric Balletbo i Serra <enric.balletbo@...labora.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     groeck@...omium.org, gwendal@...omium.org, bleung@...omium.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com,
        Vincent Palatin <vpalatin@...omium.org>
Subject: [PATCH 2/6] mfd: cros_ec: free IRQ automatically

From: Vincent Palatin <vpalatin@...omium.org>

Free the IRQ we might have requested when removing the cros_ec device,
so we can unload and reload the driver properly.

Signed-off-by: Vincent Palatin <vpalatin@...omium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
---
 drivers/mfd/cros_ec.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c
index 74780f2964a1..d1a4fbee9380 100644
--- a/drivers/mfd/cros_ec.c
+++ b/drivers/mfd/cros_ec.c
@@ -119,9 +119,9 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 	}
 
 	if (ec_dev->irq) {
-		err = request_threaded_irq(ec_dev->irq, NULL, ec_irq_thread,
-					   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
-					   "chromeos-ec", ec_dev);
+		err = devm_request_threaded_irq(dev, ec_dev->irq, NULL,
+				ec_irq_thread, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+				"chromeos-ec", ec_dev);
 		if (err) {
 			dev_err(dev, "Failed to request IRQ %d: %d",
 				ec_dev->irq, err);
@@ -135,7 +135,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 		dev_err(dev,
 			"Failed to register Embedded Controller subdevice %d\n",
 			err);
-		goto fail_mfd;
+		return err;
 	}
 
 	if (ec_dev->max_passthru) {
@@ -153,7 +153,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 			dev_err(dev,
 				"Failed to register Power Delivery subdevice %d\n",
 				err);
-			goto fail_mfd;
+			return err;
 		}
 	}
 
@@ -162,7 +162,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 		if (err) {
 			mfd_remove_devices(dev);
 			dev_err(dev, "Failed to register sub-devices\n");
-			goto fail_mfd;
+			return err;
 		}
 	}
 
@@ -180,11 +180,6 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 	cros_ec_acpi_install_gpe_handler(dev);
 
 	return 0;
-
-fail_mfd:
-	if (ec_dev->irq)
-		free_irq(ec_dev->irq, ec_dev);
-	return err;
 }
 EXPORT_SYMBOL(cros_ec_register);
 
-- 
2.16.1