From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: Tero Kristo <t-kristo-l0cyMroinI0@public.gmane.org>
Cc: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH] ARM: dts: am43xx: fix edma memcpy channel allocation
Date: Wed, 30 Mar 2016 14:15:07 -0700 [thread overview]
Message-ID: <20160330211506.GD9329@atomide.com> (raw)
In-Reply-To: <1457946110-4612-1-git-send-email-t-kristo-l0cyMroinI0@public.gmane.org>
* Tero Kristo <t-kristo-l0cyMroinI0@public.gmane.org> [160314 02:02]:
> EDMA was allocating DMA channels 32 and 33 for memcpy usage, out of which
> channel 33 is actually used by DES crypto engine. This bad allocation of
> the channel causes a crash in the DES crypto engine, as the channel
> gets configured for memcpy usage instead of hardware <-> memory DMA.
>
> Fixed by allocating DMA channels 58 and 59 for memcpy usage (I2C0 RX/TX),
> which are not used by anybody.
Thanks applying into omap-for-v4.6/fixes with Cc stable v4.4+.
Tony
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WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: am43xx: fix edma memcpy channel allocation
Date: Wed, 30 Mar 2016 14:15:07 -0700 [thread overview]
Message-ID: <20160330211506.GD9329@atomide.com> (raw)
In-Reply-To: <1457946110-4612-1-git-send-email-t-kristo@ti.com>
* Tero Kristo <t-kristo@ti.com> [160314 02:02]:
> EDMA was allocating DMA channels 32 and 33 for memcpy usage, out of which
> channel 33 is actually used by DES crypto engine. This bad allocation of
> the channel causes a crash in the DES crypto engine, as the channel
> gets configured for memcpy usage instead of hardware <-> memory DMA.
>
> Fixed by allocating DMA channels 58 and 59 for memcpy usage (I2C0 RX/TX),
> which are not used by anybody.
Thanks applying into omap-for-v4.6/fixes with Cc stable v4.4+.
Tony
next prev parent reply other threads:[~2016-03-30 21:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-14 9:01 [PATCH] ARM: dts: am43xx: fix edma memcpy channel allocation Tero Kristo
2016-03-14 9:01 ` Tero Kristo
[not found] ` <1457946110-4612-1-git-send-email-t-kristo-l0cyMroinI0@public.gmane.org>
2016-03-14 9:13 ` Lokesh Vutla
2016-03-14 9:13 ` Lokesh Vutla
2016-03-30 21:15 ` Tony Lindgren [this message]
2016-03-30 21:15 ` Tony Lindgren
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