linux-kernel - [PATCH 2/3] amba: kill amba_find

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 10 Dec 2021 16:31:29 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Russell King <linux@...linux.org.uk>,
        Vinod Koul <vkoul@...nel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     Rob Herring <robh@...nel.org>,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH 2/3] amba: kill amba_find_match()

There is no one use amba_find_match(), kill it.

Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 drivers/amba/bus.c       | 61 ----------------------------------------
 include/linux/amba/bus.h |  1 -
 2 files changed, 62 deletions(-)

diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index e1a5eca3ae3c..dd0ef65e5c3a 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -669,66 +669,6 @@ void amba_device_unregister(struct amba_device *dev)
 	device_unregister(&dev->dev);
 }
 
-
-struct find_data {
-	struct amba_device *dev;
-	struct device *parent;
-	const char *busid;
-	unsigned int id;
-	unsigned int mask;
-};
-
-static int amba_find_match(struct device *dev, void *data)
-{
-	struct find_data *d = data;
-	struct amba_device *pcdev = to_amba_device(dev);
-	int r;
-
-	r = (pcdev->periphid & d->mask) == d->id;
-	if (d->parent)
-		r &= d->parent == dev->parent;
-	if (d->busid)
-		r &= strcmp(dev_name(dev), d->busid) == 0;
-
-	if (r) {
-		get_device(dev);
-		d->dev = pcdev;
-	}
-
-	return r;
-}
-
-/**
- *	amba_find_device - locate an AMBA device given a bus id
- *	@busid: bus id for device (or NULL)
- *	@parent: parent device (or NULL)
- *	@id: peripheral ID (or 0)
- *	@mask: peripheral ID mask (or 0)
- *
- *	Return the AMBA device corresponding to the supplied parameters.
- *	If no device matches, returns NULL.
- *
- *	NOTE: When a valid device is found, its refcount is
- *	incremented, and must be decremented before the returned
- *	reference.
- */
-struct amba_device *
-amba_find_device(const char *busid, struct device *parent, unsigned int id,
-		 unsigned int mask)
-{
-	struct find_data data;
-
-	data.dev = NULL;
-	data.parent = parent;
-	data.busid = busid;
-	data.id = id;
-	data.mask = mask;
-
-	bus_for_each_dev(&amba_bustype, NULL, &data, amba_find_match);
-
-	return data.dev;
-}
-
 /**
  *	amba_request_regions - request all mem regions associated with device
  *	@dev: amba_device structure for device
@@ -768,6 +708,5 @@ EXPORT_SYMBOL(amba_driver_register);
 EXPORT_SYMBOL(amba_driver_unregister);
 EXPORT_SYMBOL(amba_device_register);
 EXPORT_SYMBOL(amba_device_unregister);
-EXPORT_SYMBOL(amba_find_device);
 EXPORT_SYMBOL(amba_request_regions);
 EXPORT_SYMBOL(amba_release_regions);
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 609ee31760ed..7f5e8be62487 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -123,7 +123,6 @@ void amba_device_put(struct amba_device *);
 int amba_device_add(struct amba_device *, struct resource *);
 int amba_device_register(struct amba_device *, struct resource *);
 void amba_device_unregister(struct amba_device *);
-struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int);
 int amba_request_regions(struct amba_device *, const char *);
 void amba_release_regions(struct amba_device *);
 
-- 
2.26.2