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devtmpfs: add debug info to handle()

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Because handle() is the core function for processing devtmpfs requests,
Let's add some debug info in handle() to help users know why failed.

Signed-off-by: Longlong Xia <xialonglong1@huawei.com>
Link: https://lore.kernel.org/r/20230210095444.4067307-3-xialonglong1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Longlong Xia 2023-02-10 09:54:43 +00:00 • committed by Greg Kroah-Hartman
parent 31b4b6730f
commit 90a9d5ff22
1 changed files with 10 additions and 2 deletions
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12
drivers/base/devtmpfs.c
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@ -389,10 +389,18 @@ static __initdata DECLARE_COMPLETION(setup_done);
static int handle(const char *name, umode_t mode, kuid_t uid, kgid_t gid,
struct device *dev)
{
int ret;
if (mode)
return handle_create(name, mode, uid, gid, dev);
ret = handle_create(name, mode, uid, gid, dev);
else
return handle_remove(name, dev);
ret = handle_remove(name, dev);
if (ret)
dev_err(dev, "failed to %s %s, ret = %d\n",
mode ? "create" : "remove", name, ret);
return ret;
}
static void __noreturn devtmpfs_work_loop(void)