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From: Jean-Michel Hautbois <jhautbois@gmail.com>
Date: Wed, 6 Aug 2014 11:10:27 +0200
Message-ID: <CAL8zT=gbqcGPMLKS+bkc3cJPJJGmzuvdr7owy+zF-bCCaEv-Gg@mail.gmail.com>
Subject: Re: patch "firmware loader: allow disabling of udev as firmware
 loader" added to driver-core tree
To: Shuah Khan <shuahkhan@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>, B_B_Singh@dell.com,
        Greg KH <gregkh@linuxfoundation.org>, Abhay_Salunke@dell.com,
        Arnd Bergmann <arnd@arndb.de>, Kay Sievers <kay@vrfy.org>,
        Ming Lei <ming.lei@canonical.com>, Stefan Roese <sr@denx.de>,
        Tom Gundersen <teg@jklm.no>, Stuart_Hayes@dell.com,
        Srinivas_G_Gowda@dell.com, linux-kernel <linux-kernel@vger.kernel.org>
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2014-08-05 21:22 GMT+02:00 Shuah Khan <shuahkhan@gmail.com>:
> On Tue, Aug 5, 2014 at 10:01 AM, Takashi Iwai <tiwai@suse.de> wrote:
>>> Yes, it worked, if the firmware was in the /lib/firmware directory.
>>
>
> ok it works when the firmware is in /lib/firmware. It sounds to me the
> reason load fails when the firmware is under /sys/class/firmware is
> fw_load_from_user_helper() returns -ENOENT when
> CONFIG_FW_LOADER_USER_HELPER is disabled.
>
> It would be nice to see the entire dmesg with debug enabled though.
>
> -- Shuah

It does not work with the 3.16 kernel even when firmware is in
/lib/firmware, it worked before this patch is applied.
Here is what I got in my dmesg :
[    0.307856] __allocate_fw_buf: fw-lattice-ecp3.bit buf=bd81a480
[    0.308029] lattice-ecp3 spi2.3: Direct firmware load for
lattice-ecp3.bit failed with error -2
[    0.308078] __fw_free_buf: fw-lattice-ecp3.bit buf=bd81a480 data=
(null) size=0
[    0.308094] lattice-ecp3 spi2.3: Cannot load firmware, aborting

If you want specific messages, please tell me.

Thanks,
JM