Re: [PATCH] ath11k: Silence clang -Wsometimes-uninitialized in ath11k_update_per_peer_stats_from_txcompl

Hi Kalle, I still see this warning in KernelCI builds of linux-next.
Is ath-next flowing into linux-next?  I just want to triple check that
this fix gets sent along.

On Tue, Feb 11, 2020 at 6:24 AM Kalle Valo [off-list ref] wrote:

Nathan Chancellor [off-list ref] wrote:

quoted

Clang warns a few times (trimmed for brevity):

../drivers/net/wireless/ath/ath11k/debugfs_sta.c:185:7: warning:
variable 'rate_idx' is used uninitialized whenever 'if' condition is
false [-Wsometimes-uninitialized]

It is not wrong, rate_idx is only initialized in the first if block.
However, this is not necessarily an issue in practice because rate_idx
will only be used when initialized because
ath11k_accumulate_per_peer_tx_stats only uses rate_idx when flags is not
set to RATE_INFO_FLAGS_HE_MCS, RATE_INFO_FLAGS_VHT_MCS, or
RATE_INFO_FLAGS_MCS. Still, it is not good to stick uninitialized values
into another function so initialize it to zero to prevent any issues
down the line.

Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
Link: https://github.com/ClangBuiltLinux/linux/issues/832
Reported-by: ci_notify@linaro.org
Signed-off-by: Nathan Chancellor <redacted>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Kalle Valo <redacted>

Patch applied to ath-next branch of ath.git, thanks.

df57acc415b1 ath11k: Silence clang -Wsometimes-uninitialized in ath11k_update_per_peer_stats_from_txcompl

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https://patchwork.kernel.org/patch/11357331/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

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Thanks,
~Nick Desaulniers