From: Christian Lamparter <chunkeey@googlemail.com>
To: linux-wireless@vger.kernel.org
Cc: linville@tuxdriver.com, hdegoede@redhat.com
Subject: [PATCH 1/2] p54pci: fix bugs in p54p_check_tx_ring
Date: Thu, 22 Apr 2010 19:52:16 +0200 [thread overview]
Message-ID: <201004221952.16857.chunkeey@googlemail.com> (raw)
From: Hans de Goede <hdegoede@redhat.com>
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>
---
diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c
index 679da7e..cffe2f2 100644
--- a/drivers/net/wireless/p54/p54pci.c
+++ b/drivers/net/wireless/p54/p54pci.c
@@ -246,7 +246,7 @@ 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) {
reply other threads:[~2010-04-22 17:52 UTC|newest]
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