Thread (1 message) 1 message, 1 author, 2020-02-14
STALE2361d

[PATCH AUTOSEL 4.14 083/186] orinoco: avoid assertion in case of NULL pointer

From: Sasha Levin <sashal@kernel.org>
Date: 2020-02-14 16:20:01
Also in: lkml, netdev, stable
Subsystem: p54 wireless driver, the rest · Maintainers: Christian Lamparter, Linus Torvalds

From: Aditya Pakki <redacted>

[ Upstream commit c705f9fc6a1736dcf6ec01f8206707c108dca824 ]

In ezusb_init, if upriv is NULL, the code crashes. However, the caller
in ezusb_probe can handle the error and print the failure message.
The patch replaces the BUG_ON call to error return.

Signed-off-by: Aditya Pakki <redacted>
Signed-off-by: Kalle Valo <redacted>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/intersil/orinoco/orinoco_usb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intersil/orinoco/orinoco_usb.c b/drivers/net/wireless/intersil/orinoco/orinoco_usb.c
index 95015d74b1c0e..5a64674a5c8da 100644
--- a/drivers/net/wireless/intersil/orinoco/orinoco_usb.c
+++ b/drivers/net/wireless/intersil/orinoco/orinoco_usb.c
@@ -1364,7 +1364,8 @@ static int ezusb_init(struct hermes *hw)
 	int retval;
 
 	BUG_ON(in_interrupt());
-	BUG_ON(!upriv);
+	if (!upriv)
+		return -EINVAL;
 
 	upriv->reply_count = 0;
 	/* Write the MAGIC number on the simulated registers to keep
-- 
2.20.1
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