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| author | Arnd Bergmann <[email protected]> | 2020-05-05 16:01:16 +0200 |
|---|---|---|
| committer | Miquel Raynal <[email protected]> | 2020-08-27 14:36:07 +0200 |
| commit | 3e1b6469f8324bee5927b063e2aca30d3e56b907 (patch) | |
| tree | dee7c74719f1f3710c9838d924fb4fbf6d3b2599 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 1d0e5ebf0caaaadbc93470850d17786f94c776c2 (diff) | |
mtd: lpddr: fix excessive stack usage with clang
Building lpddr2_nvm with clang can result in a giant stack usage
in one function:
drivers/mtd/lpddr/lpddr2_nvm.c:399:12: error: stack frame size of 1144 bytes in function 'lpddr2_nvm_probe' [-Werror,-Wframe-larger-than=]
The problem is that clang decides to build a copy of the mtd_info
structure on the stack and then do a memcpy() into the actual version. It
shouldn't really do it that way, but it's not strictly a bug either.
As a workaround, use a static const version of the structure to assign
most of the members upfront and then only set the few members that
require runtime knowledge at probe time.
Fixes: 96ba9dd65788 ("mtd: lpddr: add driver for LPDDR2-NVM PCM memories")
Signed-off-by: Arnd Bergmann <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Acked-by: Miquel Raynal <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Link: https://lore.kernel.org/linux-mtd/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions