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[75.142.250.213]) by smtp.gmail.com with ESMTPSA id t22sm7969499otk.24.2020.10.11.08.54.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 11 Oct 2020 08:54:43 -0700 (PDT) From: trix@redhat.com To: yhchuang@realtek.com, kvalo@codeaurora.org, davem@davemloft.net, kuba@kernel.org, natechancellor@gmail.com, ndesaulniers@google.com Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, Tom Rix Subject: [PATCH] rtw88: fix fw_fifo_addr check Date: Sun, 11 Oct 2020 08:54:38 -0700 Message-Id: <20201011155438.15892-1-trix@redhat.com> X-Mailer: git-send-email 2.18.1 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Tom Rix The clang build reports this warning fw.c:1485:21: warning: address of array 'rtwdev->chip->fw_fifo_addr' will always evaluate to 'true' if (!rtwdev->chip->fw_fifo_addr) { fw_fifo_addr is an array in rtw_chip_info so it is always nonzero. A better check is if the first element of the array is nonzero. In the cases where fw_fifo_addr is initialized by rtw88b and rtw88c, the first array element is 0x780. Signed-off-by: Tom Rix Reviewed-by: Nathan Chancellor Acked-by: Tzu-En Huang --- drivers/net/wireless/realtek/rtw88/fw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c index 042015bc8055..b2fd87834f23 100644 --- a/drivers/net/wireless/realtek/rtw88/fw.c +++ b/drivers/net/wireless/realtek/rtw88/fw.c @@ -1482,7 +1482,7 @@ static bool rtw_fw_dump_check_size(struct rtw_dev *rtwdev, int rtw_fw_dump_fifo(struct rtw_dev *rtwdev, u8 fifo_sel, u32 addr, u32 size, u32 *buffer) { - if (!rtwdev->chip->fw_fifo_addr) { + if (!rtwdev->chip->fw_fifo_addr[0]) { rtw_dbg(rtwdev, RTW_DBG_FW, "chip not support dump fw fifo\n"); return -ENOTSUPP; }