github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-27 17:47:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

platform/x86/intel/tpmi: convert mutex in mem_write() to guard

Browse Source 
Convert the explicit mutex_lock/mutex_unlock pair in mem_write() into
a cleanup.h guard(mutex)() scope-based lock acquisition. This removes
the remaining goto-based cleanup path and keeps the lock held until
the end of the mem_write() scope.

Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: ZhaoJinming <zhaojinming@uniontech.com>
Link: https://patch.msgid.link/20260521130848.2860219-2-zhaojinming@uniontech.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
ZhaoJinming 2026-05-21 21:08:48 +08:00 committed by Ilpo Järvinen
parent 3b9f95b5a4
commit 6736b18019
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
1 changed files with 4 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/platform/x86/intel/vsec_tpmi.c
View File

@ -504,24 +504,17 @@ static ssize_t mem_write(struct file *file, const char __user *userbuf, size_t l
if (addr >= size)
return -EINVAL;
mutex_lock(&tpmi_dev_lock);
guard(mutex)(&tpmi_dev_lock);
mem = ioremap(pfs->vsec_offset + punit * size, size);
if (!mem) {
ret = -ENOMEM;
goto unlock_mem_write;
}
if (!mem)
return -ENOMEM;
writel(value, mem + addr);
iounmap(mem);
ret = len;
unlock_mem_write:
mutex_unlock(&tpmi_dev_lock);
return ret;
return len;
}
static int mem_write_show(struct seq_file *s, void *unused)