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| author |   Hari Bathini <hbathini@linux.ibm.com> | 2019-09-11 20:21:16 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-09-14 00:04:43 +1000 |
| commit | 2790d01d1e1d22735d848eec55668f7d44417e22 (patch) | |
| tree | f759721874ffceb66fcf964994107f6005751e59 /arch/powerpc/kernel/fadump.c | |
| parent | powerpc/fadump: register kernel metadata address with opal (diff) | |
| download | linux-dev-2790d01d1e1d22735d848eec55668f7d44417e22.tar.xz linux-dev-2790d01d1e1d22735d848eec55668f7d44417e22.zip | |
powerpc/fadump: reset metadata address during clean up
During kexec boot, metadata address needs to be reset to avoid running
into errors interpreting stale metadata address, in case the kexec'ed
kernel crashes before metadata address could be setup again.
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/156821346629.5656.10783321582005237813.stgit@hbathini.in.ibm.com
Diffstat (limited to 'arch/powerpc/kernel/fadump.c')
| -rw-r--r-- | arch/powerpc/kernel/fadump.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c index 7e7056382d98..aab9b4db0363 100644 --- a/arch/powerpc/kernel/fadump.c +++ b/arch/powerpc/kernel/fadump.c @@ -965,6 +965,9 @@ static int register_fadump(void) void fadump_cleanup(void) { + if (!fw_dump.fadump_supported) + return; + /* Invalidate the registration only if dump is active. */ if (fw_dump.dump_active) { pr_debug("Invalidating firmware-assisted dump registration\n"); @@ -974,6 +977,9 @@ void fadump_cleanup(void) fw_dump.ops->fadump_unregister(&fw_dump); free_crash_memory_ranges(); } + + if (fw_dump.ops->fadump_cleanup) + fw_dump.ops->fadump_cleanup(&fw_dump); } static void fadump_free_reserved_memory(unsigned long start_pfn, |