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firewire: core: replace IDR with XArray to maintain fw_device

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In core function, the instances of fw_device corresponding to firewire device
node in system are maintained by IDR. As of kernel v6.0, IDR has been
superseded by XArray and deprecated.

This commit replaces the usage of IDR with XArray to maintain the device
instances. The instance of XArray is allocated statically, and
initialized with XA_FLAGS_ALLOC so that the index of allocated entry starts
with zero and available as the minor identifier of device node.

Link: https://lore.kernel.org/r/20240812014251.165492-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
This commit is contained in:
Takashi Sakamoto
2024-08-12 10:42:50 +09:00
parent ebb9d3ca8f
commit 7e5a7725a0
3 changed files with 14 additions and 13 deletions
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3
drivers/firewire/core-transaction.c
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@@ -13,7 +13,6 @@
#include <linux/firewire-constants.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/idr.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/list.h>
@@ -1359,7 +1358,7 @@ static void __exit fw_core_cleanup(void)
unregister_chrdev(fw_cdev_major, "firewire");
bus_unregister(&fw_bus_type);
destroy_workqueue(fw_workqueue);
idr_destroy(&fw_device_idr);
xa_destroy(&fw_device_xa);
}
module_init(fw_core_init);