From: Emmanuel Grumbach <egrumbach@gmail.com>
To: "Grumbach, Emmanuel" <emmanuel.grumbach@intel.com>,
Petko Manolov <petkan@nucleusys.com>
Cc: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"ilw@linux.intel.com" <ilw@linux.intel.com>,
"Berg, Johannes" <johannes.berg@intel.com>
Subject: Re: iwlwifi crash with 3.13
Date: Thu, 23 Jan 2014 21:11:52 +0200 [thread overview]
Message-ID: <52E16978.3040602@gmail.com> (raw)
In-Reply-To: <0BA3FCBA62E2DC44AF3030971E174FB303D57045@HASMSX103.ger.corp.intel.com>
[-- Attachment #1: Type: text/plain, Size: 590 bytes --]
Ok - I put the pieces together:
> iwlwifi 0000:01:00.0: loaded firmware version 22.15.8.0 op_mode iwlmvm
> iwlwifi 0000:01:00.0: Detected Intel(R) Wireless N 7260, REV=0x144
This means that your NIC is 2.4GHz only. Dual band NICs print something
else.
Now here come the catch. You seem to have an "old" NIC in a way that the
NVM (EEPROM like) is old. In that NVM, there was a bug that advertised
the A band channels but disabled the A band in SKU cap.
Can you please try the patch attached?
I will prevent the driver from trying to work on A band while the HW
doesn't allow.
emmanuel
[-- Attachment #2: 0001-iwlwifi-mvm-don-t-allow-A-band-if-SKU-forbids-it.patch --]
[-- Type: text/x-patch, Size: 976 bytes --]
>From dd40219d34426e4f9c7d1b10653ece3dc67588c5 Mon Sep 17 00:00:00 2001
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Thu, 5 Dec 2013 22:42:55 +0200
Subject: [PATCH] iwlwifi: mvm: don't allow A band if SKU forbids it
Change-Id: I920b7c53dc05a41de43ab9762eb7853dc4bed1ed
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
---
drivers/net/wireless/iwlwifi/iwl-nvm-parse.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
index 1fce0ec..9600afc 100644
--- a/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
@@ -192,6 +192,10 @@ static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
continue;
}
+ if (ch_idx >= NUM_2GHZ_CHANNELS &&
+ !data->sku_cap_band_52GHz_enable)
+ continue;
+
channel = &data->channels[n_channels];
n_channels++;
--
1.8.1.msysgit.1
next prev parent reply other threads:[~2014-01-23 19:11 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-23 9:16 iwlwifi crash with 3.13 Petko Manolov
2014-01-23 9:22 ` Grumbach, Emmanuel
2014-01-23 12:31 ` Petko Manolov
2014-01-23 12:34 ` Grumbach, Emmanuel
2014-01-23 12:45 ` Grumbach, Emmanuel
2014-01-23 19:11 ` Emmanuel Grumbach [this message]
2014-01-23 20:19 ` Petko Manolov
2014-01-23 20:00 ` Petko Manolov
2014-01-23 20:07 ` Emmanuel Grumbach
2014-01-23 20:21 ` Petko Manolov
2014-02-07 21:40 ` Petko Manolov
2014-02-08 18:10 ` Emmanuel Grumbach
2014-02-09 13:26 ` Petko Manolov
2014-02-09 13:31 ` Grumbach, Emmanuel
2014-02-09 13:49 ` Petko Manolov
2014-02-07 11:08 ` Niklas Claesson
2014-02-08 18:11 ` Emmanuel Grumbach
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