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Subject[PATCH] rtw88: fix fw_fifo_addr check
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 <>
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;
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