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From: Alan Cox <>
To: gyang <>
Cc: Alan Cox <>,
	Bryan Wu <>,,
Subject: Re: [PATCH 2/6] Blackfin Serial Driver: Add a debug function to serial driver.
Date: Wed, 15 Oct 2008 04:38:11 -0400	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <1224037421.6284.40.camel@dyang>

On Wed, Oct 15, 2008 at 10:23:41AM +0800, gyang wrote:
> We are making a SMP like patch to blackfin, cpu_relax() is replaced by a
> data cache flush function which will count it to a per-cpu counter.
> If this serial function is called too early, the per-cpu data area have
> not been initialized, this call will cause crash.
> So we'd like to use barrier() instead of cpu_relax().

Can you split that out as a separate change and include the explanation in
the patch then.


  reply	other threads:[~2008-10-15  8:38 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-13  9:46 [PATCH 0/6] Blackfin Serial Driver updates for 2.6.28 Bryan Wu
2008-10-13  9:46 ` [PATCH 1/6] Blackfin Serial Driver: updates kgdb over Blackfin serial driver with kgdb framework Bryan Wu
2008-10-13  9:46 ` [PATCH 2/6] Blackfin Serial Driver: Add a debug function to serial driver Bryan Wu
2008-10-14 13:27   ` Alan Cox
2008-10-15  2:23     ` gyang
2008-10-15  8:38       ` Alan Cox [this message]
2008-10-16 13:58         ` Bryan Wu
2008-10-13  9:46 ` [PATCH 3/6] Blackfin Serial Driver: fix bug - SIR driver stop receiving randomly Bryan Wu
2008-10-13  9:46 ` [PATCH 4/6] Blackfin Serial Driver: Clean serial console and early prink code` Bryan Wu
2008-10-13  9:46 ` [PATCH 5/6] Blackfin Serial Driver: Fix bug - BF527-EZKIT unable to receive large files over UART in DMA mode Bryan Wu
2008-10-13  9:46 ` [PATCH 6/6] Blackfin Serial Driver: Remove BI status for known_good_char Bryan Wu
2008-10-13 10:16 ` [PATCH 0/6] Blackfin Serial Driver updates for 2.6.28 Alan Cox

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