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author | Andrew Bresticker <abrestic@chromium.org> | 2016-02-15 09:19:49 +0100 |
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committer | Willy Tarreau <w@1wt.eu> | 2017-02-10 11:04:02 +0100 |
commit | 8996ef00ef17c7e8460bca5785c5f08794d9f589 (patch) | |
tree | 4fbd50c74a8d7e2a87aee26a97124f26db710737 /drivers/media/dvb-frontends/mb86a20s.c | |
parent | 0d29b98a434751a1b7c654d4e437883f3f27fe51 (diff) | |
download | edison-v3.10-8996ef00ef17c7e8460bca5785c5f08794d9f589.tar.gz |
pstore/ram: Use memcpy_fromio() to save old buffer
commit d771fdf94180de2bd811ac90cba75f0f346abf8d upstream.
The ramoops buffer may be mapped as either I/O memory or uncached
memory. On ARM64, this results in a device-type (strongly-ordered)
mapping. Since unnaligned accesses to device-type memory will
generate an alignment fault (regardless of whether or not strict
alignment checking is enabled), it is not safe to use memcpy().
memcpy_fromio() is guaranteed to only use aligned accesses, so use
that instead.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Enric Balletbo Serra <enric.balletbo@collabora.com>
Reviewed-by: Puneet Kumar <puneetster@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'drivers/media/dvb-frontends/mb86a20s.c')
0 files changed, 0 insertions, 0 deletions