iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

p54pci: fix bugs in p54p_check_tx_ring

Browse Source 
Hans de Goede identified a bug in p54p_check_tx_ring:

there are two ring indices. 1 => tx data and 3 => tx management.
But the old code had a constant "1" and this resulted in spurious
dma unmapping failures.

Cc: stable@kernel.org
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=583623
Bug-Identified-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Hans de Goede 2010-04-22 19:52:16 +02:00 committed by John W. Linville
parent fe6f212ce1
commit 0250ececdf
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/p54/p54pci.c
View File

@ -245,7 +245,7 @@ static void p54p_check_tx_ring(struct ieee80211_hw *dev, u32 *index,
u32 idx, i;
i = (*index) % ring_limit;
(*index) = idx = le32_to_cpu(ring_control->device_idx[1]);
(*index) = idx = le32_to_cpu(ring_control->device_idx[ring_index]);
idx %= ring_limit;
while (i != idx) {