Re: [PATCH] [v2] mt76: mt7915: fix unused 'mode' variable

+ linux-wireless

Arnd Bergmann [off-list ref] writes:

From: Arnd Bergmann <arnd@arndb.de>

clang points out a possible corner case in the mt7915_tm_set_tx_cont()
function if called with invalid arguments:

drivers/net/wireless/mediatek/mt76/mt7915/testmode.c:593:2: warning: variable 'mode' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized]
        default:
        ^~~~~~~
drivers/net/wireless/mediatek/mt76/mt7915/testmode.c:597:13: note: uninitialized use occurs here
        rateval =  mode << 6 | rate_idx;
                   ^~~~
drivers/net/wireless/mediatek/mt76/mt7915/testmode.c:506:37: note: initialize the variable 'mode' to silence this warning
        u8 rate_idx = td->tx_rate_idx, mode;
                                           ^

Change it to return an error instead of continuing with invalid data
here.

Fixes: 3f0caa3cbf94 ("mt76: mt7915: add support for continuous tx in testmode")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
v2: remove the extra 'break;' after return.
---
 drivers/net/wireless/mediatek/mt76/mt7915/testmode.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

You forgot to Cc linux-wireless and hence patchwork didn't see this, so
I applied this manually instead:

c490492f15f6 mt76: mt7915: fix unused 'mode' variable

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

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