This is a note to let you know that I've just added the patch titled
iwlwifi: protect SRAM debugfs
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iwlwifi-protect-sram-debugfs.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From wujianguo@xxxxxxxxxx Fri Mar 7 16:58:32 2014
From: Johannes Berg <johannes.berg@xxxxxxxxx>
Date: Thu, 27 Feb 2014 09:52:56 +0800
Subject: iwlwifi: protect SRAM debugfs
To: <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>, <lizefan@xxxxxxxxxx>, Johannes Berg <johannes.berg@xxxxxxxxx>, Jianguo Wu <wujianguo@xxxxxxxxxx>
Message-ID: <1393465983-10548-3-git-send-email-wujianguo@xxxxxxxxxx>
From: Johannes Berg <johannes.berg@xxxxxxxxx>
commit 4fc79db178f0a0ede479b4713e00df2d106028b3 upstream.
If the device is not started, we can't read its
SRAM and attempting to do so will cause issues.
Protect the debugfs read.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
[wujg: Backported to 3.4: adjust context]
Signed-off-by: Jianguo Wu <wujianguo@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-debugfs.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -227,6 +227,9 @@ static ssize_t iwl_dbgfs_sram_read(struc
const struct fw_img *img;
size_t bufsz;
+ if (!iwl_is_ready_rf(priv))
+ return -EAGAIN;
+
/* default is to dump the entire data segment */
if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) {
priv->dbgfs_sram_offset = 0x800000;
Patches currently in stable-queue which might be from johannes.berg@xxxxxxxxx are
queue-3.4/iwlwifi-dvm-don-t-send-bt_config-on-devices-w-o-bluetooth.patch
queue-3.4/iwlwifi-handle-dma-mapping-failures.patch
queue-3.4/iwlwifi-pcie-add-skus-for-6000-6005-and-6235-series.patch
queue-3.4/iwlwifi-protect-sram-debugfs.patch
queue-3.4/iwlwifi-fix-flow-handler-debug-code.patch
queue-3.4/iwlwifi-don-t-handle-masked-interrupt.patch
queue-3.4/iwlwifi-dvm-fix-calling-ieee80211_chswitch_done-with-null.patch
queue-3.4/iwlwifi-always-copy-first-16-bytes-of-commands.patch
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