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authorSang-Heon Jeon <ekffu200098@gmail.com>2026-08-24 01:18:14 +0900
committerJulia Lawall <Julia.Lawall@inria.fr>2026-08-23 22:12:11 +0200
commit2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c (patch)
treedcc4da1d99f17541c5590ac63c77da4bf372a4ab /drivers/dca/dca-sysfs.c
downloadlinux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.tar.gz
linux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.zip
coccinelle: alloc_cast: drop removed allocatorsgrafted
- pci_alloc_consistent() and pci_zalloc_consistent() were removed by commit 7968778914e5 ("PCI: Remove the deprecated "pci-dma-compat.h" API") - kmem_alloc() was removed by commit f078d4ea8276 ("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit 10634530f7ba ("xfs: convert kmem_zalloc() to kzalloc()") - kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers") So drop them from the rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Diffstat (limited to 'drivers/dca/dca-sysfs.c')
-rw-r--r--drivers/dca/dca-sysfs.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/drivers/dca/dca-sysfs.c b/drivers/dca/dca-sysfs.c
new file mode 100644
index 000000000..b915c2b46
--- /dev/null
+++ b/drivers/dca/dca-sysfs.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/device.h>
+#include <linux/idr.h>
+#include <linux/kdev_t.h>
+#include <linux/err.h>
+#include <linux/dca.h>
+#include <linux/gfp.h>
+#include <linux/export.h>
+
+static const struct class dca_class = {
+ .name = "dca",
+};
+static struct idr dca_idr;
+static spinlock_t dca_idr_lock;
+
+int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot)
+{
+ struct device *cd;
+ static int req_count;
+
+ cd = device_create(&dca_class, dca->cd, MKDEV(0, slot + 1), NULL,
+ "requester%d", req_count++);
+ return PTR_ERR_OR_ZERO(cd);
+}
+
+void dca_sysfs_remove_req(struct dca_provider *dca, int slot)
+{
+ device_destroy(&dca_class, MKDEV(0, slot + 1));
+}
+
+int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev)
+{
+ struct device *cd;
+ int ret;
+
+ idr_preload(GFP_KERNEL);
+ spin_lock(&dca_idr_lock);
+
+ ret = idr_alloc(&dca_idr, dca, 0, 0, GFP_NOWAIT);
+ if (ret >= 0)
+ dca->id = ret;
+
+ spin_unlock(&dca_idr_lock);
+ idr_preload_end();
+ if (ret < 0)
+ return ret;
+
+ cd = device_create(&dca_class, dev, MKDEV(0, 0), NULL, "dca%d", dca->id);
+ if (IS_ERR(cd)) {
+ spin_lock(&dca_idr_lock);
+ idr_remove(&dca_idr, dca->id);
+ spin_unlock(&dca_idr_lock);
+ return PTR_ERR(cd);
+ }
+ dca->cd = cd;
+ return 0;
+}
+
+void dca_sysfs_remove_provider(struct dca_provider *dca)
+{
+ device_unregister(dca->cd);
+ dca->cd = NULL;
+ spin_lock(&dca_idr_lock);
+ idr_remove(&dca_idr, dca->id);
+ spin_unlock(&dca_idr_lock);
+}
+
+int __init dca_sysfs_init(void)
+{
+ int err;
+
+ idr_init(&dca_idr);
+ spin_lock_init(&dca_idr_lock);
+
+ err = class_register(&dca_class);
+ if (err) {
+ idr_destroy(&dca_idr);
+ return err;
+ }
+ return 0;
+}
+
+void __exit dca_sysfs_exit(void)
+{
+ class_unregister(&dca_class);
+ idr_destroy(&dca_idr);
+}
+