2021-02-15 12:07:37

by Colin King

[permalink] [raw]
Subject: [PATCH] b43: N-PHY: Fix the update of coef for the PHY revision >= 3case

From: Colin Ian King <[email protected]>

The documentation for the PHY update [1] states:

Loop 4 times with index i

If PHY Revision >= 3
Copy table[i] to coef[i]
Otherwise
Set coef[i] to 0

the copy of the table to coef is currently implemented the wrong way
around, table is being updated from uninitialized values in coeff.
Fix this by swapping the assignment around.

[1] https://bcm-v4.sipsolutions.net/802.11/PHY/N/RestoreCal/

Fixes: 2f258b74d13c ("b43: N-PHY: implement restoring general configuration")
Addresses-Coverity: ("Uninitialized scalar variable")
Signed-off-by: Colin Ian King <[email protected]>
---
drivers/net/wireless/broadcom/b43/phy_n.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/b43/phy_n.c b/drivers/net/wireless/broadcom/b43/phy_n.c
index b669dff24b6e..665b737fbb0d 100644
--- a/drivers/net/wireless/broadcom/b43/phy_n.c
+++ b/drivers/net/wireless/broadcom/b43/phy_n.c
@@ -5311,7 +5311,7 @@ static void b43_nphy_restore_cal(struct b43_wldev *dev)

for (i = 0; i < 4; i++) {
if (dev->phy.rev >= 3)
- table[i] = coef[i];
+ coef[i] = table[i];
else
coef[i] = 0;
}
--
2.30.0