linux-kernel - Re: [PATCH v2 00/13] OMAP Serial patches

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Message-ID: <20120823062646.GC31295@arwen.pp.htv.fi>
Date:	Thu, 23 Aug 2012 09:26:47 +0300
From:	Felipe Balbi <balbi@...com>
To:	Felipe Balbi <balbi@...com>
Cc:	alan@...ux.intel.com, Tony Lindgren <tony@...mide.com>,
	Kevin Hilman <khilman@...com>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux ARM Kernel Mailing List 
	<linux-arm-kernel@...ts.infradead.org>,
	linux-serial@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Shubhrajyoti Datta <shubhrajyoti@...com>
Subject: Re: [PATCH v2 00/13] OMAP Serial patches

Hi,

On Tue, Aug 21, 2012 at 03:15:58PM +0300, Felipe Balbi wrote:
> Hi guys,
> 
> here's a series of cleanup patches to the OMAP serial
> driver. A later series could be made re-implementing
> DMA using the DMA Engine API. Note that for RX DMA
> we could be using RX Timeout IRQ as a hint that we better
> use PIO instead ;-)
> 
> All patches were tested on my pandaboard, but I'd really
> like to receive Tested-by on other platforms.
> 
> After this goes in, I'll probably try to get UART wakeup
> working again and only after that look at DMA.
> 
> Changes since v1:
> 
> 	. improved commit log on patch 9/13 (formerly 10/13)
> 	. removed patch 2/13
> 	. added a new patch switching from spin_lock_irqsave() to spin_lock and
> 		spin_unlock_irqrestore to spin_unlock
> 
> Retested with my pandaboard, UART continues to work:
> 
>  # grep -i uart /proc/interrupts
>  106:        124          0       GIC  OMAP UART2
>  #  grep -i uart /proc/interrupts
>  106:        189          0       GIC  OMAP UART2
>  #  grep -i uart /proc/interrupts
>  106:        255          0       GIC  OMAP UART2
>  #  grep -i uart /proc/interrupts
>  106:        321          0       GIC  OMAP UART2
>  #  grep -i uart /proc/interrupts
>  106:        387          0       GIC  OMAP UART2
>  #  grep -i uart /proc/interrupts
>  106:        453          0       GIC  OMAP UART2
>  #  grep -i uart /proc/interrupts
>  106:        519          0       GIC  OMAP UART2
> 
> cheers
> 
> ps: if anyone knows a better test for UART, let me know.
> 
> for convenience of anyone testing, patches are available on my git tree [1] on
> branch uart
> 
> [1] git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git uart

Well, it turns out we found a small issue with one of these patches. We
have already fixed the isse. Will re-send the series soon with a few
more patches added. cheers

-- 
balbi

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