[PATCH 5.10 369/509] wifi: airo: avoid uninitialized warning in airo_get_rate()

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From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

[ Upstream commit 9373771aaed17f5c2c38485f785568abe3a9f8c1 ]

Quieten a gcc (11.3.0) build error or warning by checking the function
call status and returning -EBUSY if the function call failed.
This is similar to what several other wireless drivers do for the
SIOCGIWRATE ioctl call when there is a locking problem.

drivers/net/wireless/cisco/airo.c: error: 'status_rid.currentXmitRate' is used uninitialized [-Werror=uninitialized]

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/39abf2c7-24a-f167-91da-ed4c5435d1c4@xxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20230709133154.26206-1-rdunlap@xxxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/wireless/cisco/airo.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c
index 8c9c6bfbaeee7..aa1d12f6f5c3b 100644
--- a/drivers/net/wireless/cisco/airo.c
+++ b/drivers/net/wireless/cisco/airo.c
@@ -6150,8 +6150,11 @@ static int airo_get_rate(struct net_device *dev,
 {
 	struct airo_info *local = dev->ml_priv;
 	StatusRid status_rid;		/* Card status info */
+	int ret;
 
-	readStatusRid(local, &status_rid, 1);
+	ret = readStatusRid(local, &status_rid, 1);
+	if (ret)
+		return -EBUSY;
 
 	vwrq->value = le16_to_cpu(status_rid.currentXmitRate) * 500000;
 	/* If more than one rate, set auto */
-- 
2.39.2






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