linux-kernel - [RFC PATCH 18/57] drivers: intel_th: Use bus_find_device_by

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Message-Id: <1559577023-558-19-git-send-email-suzuki.poulose@arm.com>
Date:   Mon,  3 Jun 2019 16:49:44 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, rafael@...nel.org,
        suzuki.poulose@....com,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: [RFC PATCH 18/57] drivers: intel_th: Use bus_find_device_by_devt helper

Switch to using the bus_find_device_by_devt helper

Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 drivers/hwtracing/intel_th/core.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c
index 033dce5..a85e236 100644
--- a/drivers/hwtracing/intel_th/core.c
+++ b/drivers/hwtracing/intel_th/core.c
@@ -789,13 +789,6 @@ static int intel_th_populate(struct intel_th *th)
 	return 0;
 }
 
-static int match_devt(struct device *dev, void *data)
-{
-	dev_t devt = (dev_t)(unsigned long)data;
-
-	return dev->devt == devt;
-}
-
 static int intel_th_output_open(struct inode *inode, struct file *file)
 {
 	const struct file_operations *fops;
@@ -803,9 +796,7 @@ static int intel_th_output_open(struct inode *inode, struct file *file)
 	struct device *dev;
 	int err;
 
-	dev = bus_find_device(&intel_th_bus, NULL,
-			      (void *)(unsigned long)inode->i_rdev,
-			      match_devt);
+	dev = bus_find_device_by_devt(&intel_th_bus, NULL, inode->i_rdev);
 	if (!dev || !dev->driver)
 		return -ENODEV;
 
-- 
2.7.4