RE: [PATCH] arm:omap:serial:cleanup: use module rev instead of cpu_is_xxxx

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> -----Original Message-----
> From: Hilman, Kevin
> Sent: Tuesday, November 08, 2011 1:15 AM
> To: Hiremath, Vaibhav
> Cc: linux-omap@xxxxxxxxxxxxxxx; tony@xxxxxxxxxxx
> Subject: Re: [PATCH] arm:omap:serial:cleanup: use module rev instead of
> cpu_is_xxxx
> 
> Vaibhav Hiremath <hvaibhav@xxxxxx> writes:
> 
> > For OMAP3 uarts (module rev >= 0x52) and all successor devices
> > (omap4, TI81xx, AM33xx, etc...) empty fifo read errata is applicable,
> > so we can get rid of cpu_is_xxxx check and simply check for module rev
> here.
> >
> > Signed-off-by: Vaibhav Hiremath <hvaibhav@xxxxxx>
> > ---
> > NOTE: This patch has been tested on OMAP3EVM, and I expect to work on
> all OMAP3
> > family of devices (including TI816x, TI814x, AM335x, etc...).
> > but I am quite not sure about OMAP2 device, can anybody comment/test?
> 
> Leaving OMAP2 as it is should be fine.
> 
> There is a major UART cleanup in progress from Govindraj.  I suggest you
> rework this patch on top of his series from 10/18:
> 
>        [PATCH v7 00/21] OMAP2+: UART: Runtime adaptation + cleanup
> 
> although it still has a few changes to go through before being ready to
> merge.
> 
Kevin,

Sorry, I missed to update on this.

We do not need this patch anymore. With latest cleanup series from Govindraj, it is already taken care. Please read below commit description -

-------------From Govindraj's commit (405b5009)------------
Serial_in and serial_out override for 8250 serial driver is also
removed. Empty fifo read fix is already taken care with omap-serial
driver with data ready bit check from LSR reg before reading RX fifo.
Also waiting for THRE(transmit hold reg empty) is done with wait_for_xmitr
in omap-serial driver.

Thanks,
Vaibhav

> Kevin
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