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Date: Fri, 16 Oct 2009 10:49:24 +0200 From: Hendrik Brueckner <brueckner@...ux.vnet.ibm.com> To: Scott Wood <scottwood@...escale.com> Cc: Christian Borntraeger <borntraeger@...ibm.com>, linuxppc-dev@...abs.org, brueckner@...ux.vnet.ibm.com, Timur Tabi <timur@...escale.com>, Alan Cox <alan@...rguk.ukuu.org.uk>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] hvc_console: returning 0 from put_chars is not an error On Thu, Oct 15, 2009 at 02:32:54PM -0500, Scott Wood wrote: > Christian Borntraeger wrote: >> About the backends, there are some that spin until the text is >> delivered (e.g. virtio) , others can drop (e.g. iucv is a connection >> oriented protocol and it will (and has to) drop if there is no >> connection). > > Sure, dropping due to not having a connection makes sense. That's > different from merely being busy. Can the iucv code tell the difference > between those two states? The states are handled by the hvc_iucv itself: If the hvc_iucv code has a connection established, terminal or console data are queued and sent to the peer. If the state is disconnected, terminal and console data is discarded internally. - Hendrik -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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