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[PATCH\,net] rtw88: fix fw dump support detection

Message ID 20201026212323.3888550-1-arnd@kernel.org
State New
Headers show
Series [PATCH\,net] rtw88: fix fw dump support detection | expand

Commit Message

Arnd Bergmann Oct. 26, 2020, 9:22 p.m. UTC 
From: Arnd Bergmann <arnd@arndb.de>

clang points out a useless check that was recently added:

drivers/net/wireless/realtek/rtw88/fw.c:1485:21: warning: address of array 'rtwdev->chip->fw_fifo_addr' will always evaluate to 'true' [-Wpointer-bool-conversion]
        if (!rtwdev->chip->fw_fifo_addr) {
            ~~~~~~~~~~~~~~~^~~~~~~~~~~~

Apparently this was meant to check the contents of the array
rather than the address, so check it accordingly.

Fixes: 0fbc2f0f34cc ("rtw88: add dump firmware fifo support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/net/wireless/realtek/rtw88/fw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Kalle Valo Nov. 2, 2020, 6:13 p.m. UTC | #1 
Arnd Bergmann <arnd@kernel.org> wrote:

> From: Arnd Bergmann <arnd@arndb.de>
> 
> clang points out a useless check that was recently added:
> 
> drivers/net/wireless/realtek/rtw88/fw.c:1485:21: warning: address of array 'rtwdev->chip->fw_fifo_addr' will always evaluate to 'true' [-Wpointer-bool-conversion]
>         if (!rtwdev->chip->fw_fifo_addr) {
>             ~~~~~~~~~~~~~~~^~~~~~~~~~~~
> 
> Apparently this was meant to check the contents of the array
> rather than the address, so check it accordingly.
> 
> Fixes: 0fbc2f0f34cc ("rtw88: add dump firmware fifo support")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>

I'll take Tom's patch as it was first.

Patch set to Superseded.
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Patch

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;
 	}