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Tue, 22 Dec 2020 09:34:43 +0000 Received: from eu-smtp-delivery-151.mimecast.com ([207.82.80.151]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kre41-0000xC-A4 for linux-riscv@lists.infradead.org; Tue, 22 Dec 2020 09:34:42 +0000 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-196-qd9Zl8UVMnGI_v8OB6DO1A-1; Tue, 22 Dec 2020 09:34:36 +0000 X-MC-Unique: qd9Zl8UVMnGI_v8OB6DO1A-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Tue, 22 Dec 2020 09:34:35 +0000 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Tue, 22 Dec 2020 09:34:35 +0000 From: David Laight To: 'Palmer Dabbelt' , "linux-riscv@lists.infradead.org" Subject: RE: [PATCH] clocksource: clint: Avoid remove __iomem in get_cycles_hi() Thread-Topic: [PATCH] clocksource: clint: Avoid remove __iomem in get_cycles_hi() Thread-Index: AQHW2CRMsP4vu/w5w0ydjz0Xpj6lf6oC2pkg Date: Tue, 22 Dec 2020 09:34:35 +0000 Message-ID: References: <20201222053230.3229427-1-palmer@dabbelt.com> In-Reply-To: <20201222053230.3229427-1-palmer@dabbelt.com> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201222_043441_519046_6C363A0E X-CRM114-Status: GOOD ( 13.34 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "daniel.lezcano@linaro.org" , kernel test robot , Palmer Dabbelt , "linux-kernel@vger.kernel.org" , "tglx@linutronix.de" , "kernel-team@android.com" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Palmer Dabbelt > Sent: 22 December 2020 05:33 > > From: Palmer Dabbelt > > This cast loses the __iomem qualifier from clint_timer_val, which > triggers an sparse warning. > > Reported-by: kernel test robot > Signed-off-by: Palmer Dabbelt > --- > drivers/clocksource/timer-clint.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/clocksource/timer-clint.c b/drivers/clocksource/timer-clint.c > index 6cfe2ab73eb0..83a8b38d46f6 100644 > --- a/drivers/clocksource/timer-clint.c > +++ b/drivers/clocksource/timer-clint.c > @@ -63,7 +63,7 @@ static struct riscv_ipi_ops clint_ipi_ops = { > #define clint_get_cycles() readq_relaxed(clint_timer_val) > #else > #define clint_get_cycles() readl_relaxed(clint_timer_val) > -#define clint_get_cycles_hi() readl_relaxed(((u32 *)clint_timer_val) + 1) > +#define clint_get_cycles_hi() readl_relaxed(((u32 __iomem *)clint_timer_val) + 1) > #endif The correct fix is (probably) to define clint_timer_val as u32 on 32bit systems. Oh - and get rid of those #defines, they are only used in the functions just below them. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales) _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv