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author | Zhen Lei <thunder.leizhen@huawei.com> | 2022-05-06 14:43:57 +0300 |
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committer | Catalin Marinas <catalin.marinas@arm.com> | 2022-05-07 21:54:33 +0300 |
commit | 2e5920bb073a4e3e69cf8e581836cafc8ba1b464 (patch) | |
tree | 703c1312ca48a5031c92b7b8765d297f9f7fe531 /drivers/bus/tegra-aconnect.c | |
parent | b2d229d4ddb17db541098b83524d901257e93845 (diff) | |
download | linux-2e5920bb073a4e3e69cf8e581836cafc8ba1b464.tar.xz |
kdump: return -ENOENT if required cmdline option does not exist
According to the current crashkernel=Y,low support in other ARCHes, it's
an optional command-line option. When it doesn't exist, kernel will try
to allocate minimum required memory below 4G automatically.
However, __parse_crashkernel() returns '-EINVAL' for all error cases. It
can't distinguish the nonexistent option from invalid option.
Change __parse_crashkernel() to return '-ENOENT' for the nonexistent option
case. With this change, crashkernel,low memory will take the default
value if crashkernel=,low is not specified; while crashkernel reservation
will fail and bail out if an invalid option is specified.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Acked-by: Baoquan He <bhe@redhat.com>
Link: https://lore.kernel.org/r/20220506114402.365-2-thunder.leizhen@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/bus/tegra-aconnect.c')
0 files changed, 0 insertions, 0 deletions