diff options
| author | Kees Cook <keescook@chromium.org> | 2021-12-08 10:44:00 +0200 |
|---|---|---|
| committer | Kalle Valo <quic_kvalo@quicinc.com> | 2021-12-09 10:00:12 +0200 |
| commit | e3128a9d482cff9cc2a826adec5e1f7acb922b8f (patch) | |
| tree | 4042badeec5d1a172846ef6818e591b7517ed34c /drivers/fpga/fpga-mgr.c | |
| parent | 9f6da09a5f6ab94bca58395af56b883b3a79663a (diff) | |
ath6kl: Use struct_group() to avoid size-mismatched casting
In builds with -Warray-bounds, casts from smaller objects to larger
objects will produce warnings. These can be overly conservative, but since
-Warray-bounds has been finding legitimate bugs, it is desirable to turn
it on globally. Instead of casting a u32 to a larger object, redefine
the u32 portion of the header to a separate struct that can be used for
both u32 operations and the distinct header fields. Silences this warning:
drivers/net/wireless/ath/ath6kl/htc_mbox.c: In function 'htc_wait_for_ctrl_msg':
drivers/net/wireless/ath/ath6kl/htc_mbox.c:2275:20: error: array subscript 'struct htc_frame_hdr[0]' is partly outside array bounds of 'u32[1]' {aka 'unsigned int[1]'} [-Werror=array-bounds]
2275 | if (htc_hdr->eid != ENDPOINT_0)
| ^~
drivers/net/wireless/ath/ath6kl/htc_mbox.c:2264:13: note: while referencing 'look_ahead'
2264 | u32 look_ahead;
| ^~~~~~~~~~
This change results in no executable instruction differences.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20211207063538.2767954-1-keescook@chromium.org
Diffstat (limited to 'drivers/fpga/fpga-mgr.c')
0 files changed, 0 insertions, 0 deletions