diff options
| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2019-08-19 14:20:07 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-08-20 16:59:22 +0300 |
| commit | 95844124385eae4bd9ca5f9514a0fc33d561ac3c (patch) | |
| tree | 4a0382e87f8851fbed3a386ded5da95a965aba7b /drivers/net/wireless/ralink/rt2x00/rt2800lib.c | |
| parent | 8f2d163cb26da87e7d8e1677368b8ba1ba4d30b3 (diff) | |
| download | linux-95844124385eae4bd9ca5f9514a0fc33d561ac3c.tar.xz | |
rt2x00: clear IV's on start to fix AP mode regression
To do not brake HW restart we should keep initialization vectors data.
I assumed that on start the data is already initialized to zeros, but
that not true on some scenarios and we should clear it. So add
additional flag to check if we are under HW restart and clear IV's
data if we are not.
Patch fixes AP mode regression.
Reported-and-tested-by: Emil Karlson <jekarl@iki.fi>
Fixes: 710e6cc1595e ("rt2800: do not nullify initialization vector data")
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/ralink/rt2x00/rt2800lib.c')
| -rw-r--r-- | drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c index c9b957ac5733..ecbe78b8027b 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c @@ -6095,6 +6095,15 @@ static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev) } /* + * Clear encryption initialization vectors on start, but keep them + * for watchdog reset. Otherwise we will have wrong IVs and not be + * able to keep connections after reset. + */ + if (!test_bit(DEVICE_STATE_RESET, &rt2x00dev->flags)) + for (i = 0; i < 256; i++) + rt2800_register_write(rt2x00dev, MAC_IVEIV_ENTRY(i), 0); + + /* * Clear all beacons */ for (i = 0; i < 8; i++) |