| Message ID | 1638435732-14657-1-git-send-email-loic.poulain@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | wcn36xx: Fix max channels retrieval | expand |
Loic Poulain <loic.poulain@linaro.org> wrote: > Kernel test robot reported:drivers/net/wireless/ath/wcn36xx/smd.c:943:33: > sparse: sparse: cast truncates bits from constant value (780 becomes 80) > > The 'channels' field is not a simple u8 array but an array of > channel_params. Using sizeof for retrieving the max number of > channels is then wrong. > > In practice, it was not an issue, because the sizeof returned > value is 780, which is truncated in min_t (u8) to 80, which is > the value we expect... > > Fix that properly using ARRAY_SIZE instead of sizeof. > > Fixes: d707f812bb05 ("wcn36xx: Channel list update before hardware scan") > Reported-by: kernel test robot <lkp@intel.com> > Signed-off-by: Loic Poulain <loic.poulain@linaro.org> > Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Patch applied to ath-next branch of ath.git, thanks. 09cab4308bf9 wcn36xx: Fix max channels retrieval
diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c index ed45e2cf..900e5a5 100644 --- a/drivers/net/wireless/ath/wcn36xx/smd.c +++ b/drivers/net/wireless/ath/wcn36xx/smd.c @@ -940,7 +940,7 @@ int wcn36xx_smd_update_channel_list(struct wcn36xx *wcn, struct cfg80211_scan_re INIT_HAL_MSG((*msg_body), WCN36XX_HAL_UPDATE_CHANNEL_LIST_REQ); - msg_body->num_channel = min_t(u8, req->n_channels, sizeof(msg_body->channels)); + msg_body->num_channel = min_t(u8, req->n_channels, ARRAY_SIZE(msg_body->channels)); for (i = 0; i < msg_body->num_channel; i++) { struct wcn36xx_hal_channel_param *param = &msg_body->channels[i]; u32 min_power = WCN36XX_HAL_DEFAULT_MIN_POWER;
Kernel test robot reported:drivers/net/wireless/ath/wcn36xx/smd.c:943:33: sparse: sparse: cast truncates bits from constant value (780 becomes 80) The 'channels' field is not a simple u8 array but an array of channel_params. Using sizeof for retrieving the max number of channels is then wrong. In practice, it was not an issue, because the sizeof returned value is 780, which is truncated in min_t (u8) to 80, which is the value we expect... Fix that properly using ARRAY_SIZE instead of sizeof. Fixes: d707f812bb05 ("wcn36xx: Channel list update before hardware scan") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Loic Poulain <loic.poulain@linaro.org> --- drivers/net/wireless/ath/wcn36xx/smd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)