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powerpc: fadump: use lock guard for mutex

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use scoped_guard for scope based resource management of mutex.
This would make the code simpler and easier to maintain.

More details on lock guards can be found at
https://lore.kernel.org/all/20230612093537.614161713@infradead.org/T/#u

Reviewed-by: Srikar Dronamraju <srikar@linux.ibm.com>
Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Reviewed-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250505075333.184463-4-sshegde@linux.ibm.com
This commit is contained in:
Shrikanth Hegde 2025-05-05 13:23:30 +05:30 committed by Madhavan Srinivasan
parent 6a21d3c5b3
commit 56534636c3
1 changed files with 4 additions and 7 deletions
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11
arch/powerpc/kernel/fadump.c
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@ -1373,15 +1373,12 @@ static void fadump_free_elfcorehdr_buf(void)
static void fadump_invalidate_release_mem(void)
{
mutex_lock(&fadump_mutex);
if (!fw_dump.dump_active) {
mutex_unlock(&fadump_mutex);
return;
scoped_guard(mutex, &fadump_mutex) {
if (!fw_dump.dump_active)
return;
fadump_cleanup();
}
fadump_cleanup();
mutex_unlock(&fadump_mutex);
fadump_free_elfcorehdr_buf();
fadump_release_memory(fw_dump.boot_mem_top, memblock_end_of_DRAM());
fadump_free_cpu_notes_buf();