From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by befuddled.reisers.ca (Postfix, from userid 65534) id DE05B1C0766; Tue, 4 Aug 2020 11:35:47 -0400 (EDT) Received: from hera.aquilenet.fr (hera.aquilenet.fr [185.233.100.1]) by befuddled.reisers.ca (Postfix) with ESMTPS id 90EDD1C074E for ; Tue, 4 Aug 2020 11:35:45 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id 7450B1689; Tue, 4 Aug 2020 17:35:44 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at aquilenet.fr Received: from hera.aquilenet.fr ([127.0.0.1]) by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NNp9mwS61FzL; Tue, 4 Aug 2020 17:35:43 +0200 (CEST) Received: from function (lfbn-bor-1-797-11.w86-234.abo.wanadoo.fr [86.234.239.11]) by hera.aquilenet.fr (Postfix) with ESMTPSA id A37C4154E; Tue, 4 Aug 2020 17:35:43 +0200 (CEST) Received: from samy by function with local (Exim 4.94) (envelope-from ) id 1k2yyc-00278t-Dr; Tue, 04 Aug 2020 17:35:42 +0200 Date: Tue, 4 Aug 2020 17:35:42 +0200 From: Samuel Thibault To: Greg KH , linux-riscv@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, speakup@linux-speakup.org Subject: Re: [PATCH 2/2] speakup: only build serialio when ISA is enabled Message-ID: <20200804153542.zowupa4ygdgxnciu@function> Mail-Followup-To: Samuel Thibault , Greg KH , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, speakup@linux-speakup.org References: <20200804111332.dex7jobmabifdzw5@function> <20200804113413.GA181242@kroah.com> <20200804114951.ijs3hnezi4f64nll@function> <20200804115817.GC203147@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20200804115817.GC203147@kroah.com> Organization: I am not organized User-Agent: NeoMutt/20170609 (1.8.3) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 X-BeenThere: speakup@linux-speakup.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Speakup is a screen review system for Linux." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Aug 2020 15:35:48 -0000 Greg KH, le mar. 04 août 2020 13:58:17 +0200, a ecrit: > ERROR: modpost: "spk_serial_io_ops" [drivers/accessibility/speakup/speakup_keypc.ko] undefined! > ERROR: modpost: "spk_stop_serial_interrupt" [drivers/accessibility/speakup/speakup_keypc.ko] undefined! Oh, indeed, these are not covered by the first patch. I realize that KEYPC depends on ISA, but with COMPILE_TEST as alternative. We can build serialio in the COMPILE_TEST case too, I'll update the patches. But then we'll still have: > the riscv build issues. Actually I was surprised by the riscv build issue: the issue is within riscv's inb() implementation, serialio.c is only calling it. arch/riscv/include/asm/io.h says: #define PCI_IOBASE ((void __iomem *)PCI_IO_START) [...] #define inb(c) ({ u8 __v; __io_pbr(); __v = readb_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; }) and thus yes it's arithmetic over a (void*) pointer, the caller cannot do anything about it. 8250_port.c itself uses inb(), doesn't it get a warning as well? Or is it getting compiled-out on riscv because of some Kconfig condition? I see that the whole drivers/tty/serial is under HAS_IOMEM, and that's the only condition I can see for 8250_port.c (except SERIAL_8250 of course), is that it, or is SERIAL_8250 just not enabled in the riscv bot? Actually the warning seems new, when looking at the Debian build log: https://buildd.debian.org/status/fetch.php?pkg=linux&arch=riscv64&ver=5.7.10-1&stamp=1595803499&raw=0 and looking for serialio.c, I do not see a warning, and its code hasn't changed. Is the build bot compiler just more talkative? Samuel