[PATCH 3/6] powerpc: fadump: use lock guard for mutex
From: Shrikanth Hegde <hidden>
Date: 2025-03-14 05:46:36
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
use guard(mutex) 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 (local) Signed-off-by: Shrikanth Hegde <redacted> --- arch/powerpc/kernel/fadump.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index 4b371c738213..5fd2c546fd8c 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c@@ -1374,15 +1374,13 @@ static void fadump_free_elfcorehdr_buf(void) static void fadump_invalidate_release_mem(void) { - mutex_lock(&fadump_mutex); + guard(mutex)(&fadump_mutex); + if (!fw_dump.dump_active) { - mutex_unlock(&fadump_mutex); return; } 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();
--
2.39.3