lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 26 Jun 2014 18:18:05 +0200
From:	Takashi Iwai <>
To:	"Luis R. Rodriguez" <>
Cc:,,,,,, "Luis R. Rodriguez" <>
Subject: Re: [PATCH 0/3] drivers: expand usage of request_firmware_direct()

At Tue, 24 Jun 2014 15:39:40 -0700,
Luis R. Rodriguez wrote:
> From: "Luis R. Rodriguez" <>
> Takashi added request_firmware_direct() via bba3a87e9 through v3.14-rc1
> which avoids the unnecessary delay introduced by using the udev firmware
> loader in case the first try failed when loading we know loading "firmware"
> is optional. The first use case was for microcode update but if drivers are
> using it for optional configuration updates, custom EEPROMs, and other
> junk other than firmware that should apply as well as good use cases,
> specially if the driver already had a first phase in which it loaded
> the first required firmware. While reviewing one driver I figured it'd
> be best to try to give formalizing a check with SmPL. This isn't perfect
> it had 1 false possitive drivers/fmc/fmc-fakedev.c on the entire kernel
> run but my hope is this can be extended a bit more to build more
> confidence, and then perhaps stuff it as a coccicheck.
> I suppose this will not be required once and if we remove
> CONFIG_FW_LOADER_USER_HELPER. Is that ever going away for good? I know
> there was a recent attempt to remove the udev loader support but
> it was unclear if the special alternative helper support would be
> removed upstream from the kernel.

Actually a few weeks ago I sent a patch to make request_firmware()
with usermode helper explicitly to be used by some drivers (like
dell-rbu).  I hope Greg took it for 3.17.  Once when this patch is in,
distros can turn off the usermode helper fallback gracefully, so no
ugly timeout issue shouldn't happen.

To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists