From mboxrd@z Thu Jan 1 00:00:00 1970 From: robert.jarzmik@free.fr (Robert Jarzmik) Date: Mon, 06 Oct 2014 20:59:28 +0200 Subject: [PATCH] Revert "ARM: pxa: call debug_ll_io_init for earlyprintk" In-Reply-To: <1412602320-22896-1-git-send-email-dbaryshkov@gmail.com> (Dmitry Eremin-Solenikov's message of "Mon, 6 Oct 2014 17:32:00 +0400") References: <1412602320-22896-1-git-send-email-dbaryshkov@gmail.com> Message-ID: <87egulausv.fsf@free.fr> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Dmitry Eremin-Solenikov writes: > This reverts commit 2111667b4677 ("ARM: pxa: call debug_ll_io_init for > earlyprintk") > > This commit gives the following backtrace on PXA/tosa early in the boot > time when DEBUG_LL is enabled. It is due to overlap between uart memory > and PERIPH_ memory block mapped by pxa_map_io. Indeed, all available UARTs IO mappings are already covered by pxa_map_io(), so the revert will remove the bug and keep the DEBUG_LL functionality. I suppose you did the test with the revert and the lowlevel debugging works, right ? Haojian, if you are still taking patches for v3.18-rcs, please have my : Reviewed-by: Robert Jarzmik If you want me to begin the gathering, tell me. Cheers. -- Robert