* Pandita, Vikram <vikram.pandita@xxxxxx> [091117 09:39]: > Tony > > >From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap-owner@xxxxxxxxxxxxxxx] On Behalf Of Tony > >Lindgren > >Sent: Tuesday, November 17, 2009 11:06 AM > >To: Pandita, Vikram > >Cc: linux-omap@xxxxxxxxxxxxxxx; Shilimkar, Santosh > >Subject: Re: [PATCH 1/2] serial: 8250: add UPF_NO_EMPTY_FIFO_READ flag > > > >* Vikram Pandita <vikram.pandita@xxxxxx> [091116 15:00]: > >> OMAP3630 and OMAP4430 UART IP blocks have a restriction wrt RX FIFO. > >> Empty RX fifo read causes an abort. OMAP1/2/3 do not have this restriction. > >> > >> So interoduce a flag in 8250 driver: UPF_NO_EMPTY_FIFO_READ > >> > >> If this flag is specified for an 8250 port, then first check if rx fifo has > >> contents, and only then proceed to read the fifo. > >> > >> The change affects only boards passing this flag in port data and hence is > >> non-disruptive for other boards. > >> > >> First reported/fixed on omap4430 by Shilimkar, Santosh > > > >This should go to linux-serial@xxxxxxxxxxxxxxx and Alan Cox. > > Patches were posted to l-o for review. Next step was to get it to the right subsystem. > > I thought Alan Cox stepped down from the maintainership of serial/tty subsystem. > Not sure if Andrew Morton is taking these patches to MM tree for now. > Any idea? OK, no idea who's dealing with 8250 now :) Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
