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patch "staging: wilc1000: Fix problem with wrong vif index" added to staging-testing

PATCH [email protected] 1 participant 1 message Apr 8, 2017

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This is a note to let you know that I've just added the patch titled

staging: wilc1000: Fix problem with wrong vif index

to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the staging-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

Quoted 1 line

From 0e490657c7214cce33fbca3d88227298c5c968ae Mon Sep 17 00:00:00 2001

From: Aditya Shankar <[email protected]>
Date: Fri, 7 Apr 2017 17:24:58 +0530
Subject: staging: wilc1000: Fix problem with wrong vif index

The vif->idx value is always 0 for two interfaces.

wl->vif_num = 0;

loop {
     ...

     vif->idx = wl->vif_num;
     ...
     wl->vif_num = i;
      ....
     i++;
     ...
}

At present, vif->idx is assigned the value of wl->vif_num
at the beginning of this block and device is initialized
based on this index value.
In the next iteration, wl->vif_num is still 0 as it is only updated later but gets assigned to vif->idx in the beginning. This causes problems later when we try to reference a particular interface and also while configuring the firmware.

This patch moves the assignment to vif->idx from the beginning of the block to after wl->vif_num is updated with latest value of i.

Fixes commit 735bb39ca3be ("staging: wilc1000: simplify vif[i]->ndev accesses")
---
 drivers/staging/wilc1000/linux_wlan.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/staging/wilc1000/linux_wlan.c +2 -1
index 2eebc6215cac..bdf11c9f44a8 100644
@@ -1251,11 +1251,12 @@ int wilc_netdev_init(struct wilc **wilc, struct device *dev, int io_type,
 		else
 			strcpy(ndev->name, "p2p%d");
 
-		vif->idx = wl->vif_num;
 		vif->wilc = *wilc;
 		vif->ndev = ndev;
 		wl->vif[i] = vif;
 		wl->vif_num = i;
+		vif->idx = wl->vif_num;
+
 		ndev->netdev_ops = &wilc_netdev_ops;
 
 		{
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