From mboxrd@z Thu Jan 1 00:00:00 1970 From: geert@linux-m68k.org (Geert Uytterhoeven) Date: Tue, 11 Jul 2017 10:57:07 +0200 Subject: [PATCH 9/9] ARM: multi_v7_defconfig: Enable DMA for Renesas serial ports In-Reply-To: References: <1499693302-25120-1-git-send-email-geert+renesas@glider.be> <1499693302-25120-10-git-send-email-geert+renesas@glider.be> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Arnd, On Tue, Jul 11, 2017 at 10:39 AM, Arnd Bergmann wrote: > On Tue, Jul 11, 2017 at 8:59 AM, Geert Uytterhoeven > wrote: > >> Whether we want to hide the option (and default to y if ARCH_RENESAS, i.e. >> ARM) is another question. Note that that wouldn't reduce code maintainability, >> as the #ifdefs would be kept, and it would prevent building and testing >> with/without DMA on ARM. > > arch/sh/configs/sdk7786_defconfig enables it, too, so it should at least be > a user-selectable option on SuperH if you do that. But that can't enable DMA, as (1) the non-DT DMA configuration was removed due to (2) being unused. Cfr. commit 219fb0c1436e4893 ("serial: sh-sci: Remove the platform data dma slave rx/tx channel IDs"). Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds