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Wed, 9 Apr 2025 14:35:59 +0000 (GMT) X-AuditID: cbfec7f2-b09c370000005155-df-67f685d0a566 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 34.00.19654.FC586F76; Wed, 9 Apr 2025 15:35:59 +0100 (BST) Received: from [106.210.134.192] (unknown [106.210.134.192]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20250409143558eusmtip21cb97f228ac947467544aa07595c6d01~0rSujc8I12703727037eusmtip2X; Wed, 9 Apr 2025 14:35:58 +0000 (GMT) Message-ID: <59af67fa-ca0d-48f6-8b78-b1c694af9dfd@samsung.com> Date: Wed, 9 Apr 2025 16:35:57 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 10/10] [RESEND 3] dma/contiguous: avoid warning about unused size_bytes To: Arnd Bergmann , Michal Nazarewicz , Arnd Bergmann , Kyungmin Park Cc: Krzysztof Kozlowski , Andy Shevchenko , Robin Murphy , iommu@lists.linux.dev, linux-kernel@vger.kernel.org Content-Language: en-US From: Marek Szyprowski In-Reply-To: <20250409122441.2875424-1-arnd@kernel.org> Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA01SeVBMcRyf33tvd9+u2bw29BuZYtFMjhQNT9hxjZ5jnDOMa1h6s1a1ZV85 MkMahUh3dhdtxGzaina37ZBpds20miViJCvliIiMJaSIXs/Rf5/je/w+3/nhqKSGNxpXqmJp tUoeKeWLMGvd94ap95K+KoLM30RkauIZhPyZWScgrRYTj+ztJskb78oF5J3E9wLyQfU5Ppnv OMojbR/befOFVHFeMaD6ejMBZSo6wadammr4VF79GuqNWQuo0h+dCHXaUgSozybf1cJNornh dKRyL62eJtsu2tV99qEgRj9sv1lTzEsAOmEKEOKQCIGPk96jKUCES4hCAM1vUxGOdAOYpq/C OPJ5wCmsHXDwwZbiRimnGwDM0rsBR9wAFtyvQ9m5YkIGdaVujMUYMQE2Z7T+0T1hvbZ9UB9J +ME2l0bAYi9iK+zu6RWwg0YQuQBqW2t4LEEJJ4CvU+/y2CqU8Iaudj3CYj4RDFO6UvgsFhKz YHmVFuNq/GBF17nBRJBIE8JOaz/CRV0MjzW6AIe9YKfDIuDwGOjMOoVxDccAzO9rQziSDmBC x9+OObCloZfPXgAlAuDV6mmcvAAak1tQ7jAesLnLk3uEB8y0nvkji+HxZAlX7Q91jtJ/a233 7qPpQKobchjdkJi6IXF0//fmA6wIeNNxTJSCZoJV9L5ARh7FxKkUgTujo0xg4IM5+x2fKsH5 TnegHSA4sAOIo9IR4nTVV4VEHC4/EE+ro7ep4yJpxg58cEzqLb5Ym6SQEAp5LB1B0zG0+q+L 4MLRCcjBn+tqWkNKfPT+RxxNqyZsSVy+A11eqZm3YXZZxMs3H7KLMky6wkOXOzyMQcMjrNfO komPX0W/ertmIa+++vDreN+K8ocPDKH2HVVHbBt62q7P8fi03qa13QnTNM6VXbh0JSZIZAvK JsOszAJlTs/hDt9I+5JlZe6wnJvhM7OYRrMyoAPdVE0fl42rUyxMq5++yDWj8PbYZytrm8Ir vty60ieT7D5ZUDkVN/ioGmLojAZLqCvUnnPdT7nWy7gx9nxOi6F59ijPgKfPJxdYDREv9hv3 9W85fXJzyaP5v/bE5m5cwW9/qY+OmpK91SQUPJt3Nd5ZZpwYUmJJ/vJEIxvvXBpYLsWYXfLg Saiakf8G88GIBc8DAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrHIsWRmVeSWpSXmKPExsVy+t/xe7rnW7+lG7xvVLHobZrOZPF30jF2 i21bNrFa/PpiYbH39VZ2i7NNb9gtLu+aw2ax4HgLq8XBD09YHTg91sxbw+jx+9ckRo9NqzrZ PO5c28PmMe9koMeLzTMZPdb9ecXk0bdlFaPH501yAZxRejZF+aUlqQoZ+cUltkrRhhZGeoaW FnpGJpZ6hsbmsVZGpkr6djYpqTmZZalF+nYJehlfZl9lL5jPXbF5xhrWBsZZnF2MHBwSAiYS ay4qdTFycQgJLGWU2HdlFWsXIydQXEbi5LQGKFtY4s+1LjaIoveMEn/OnQBL8ArYScxa95EF xGYRUJG4MfEeM0RcUOLkzCdgcVEBeYn7t2awg9jCArESX378YgcZJCIwjVHiRudyVhCHWeAs o8SxlglQK7YzShw+f4sJpIVZQFzi1pP5YDabgKFE11uQOzg5OAXMJbbunMkCUWMm0bW1ixHC lpfY/nYO8wRGoVlILpmFZNQsJC2zkLQsYGRZxSiSWlqcm55bbKRXnJhbXJqXrpecn7uJERix 24793LKDceWrj3qHGJk4GA8xSnAwK4nwTsj7li7Em5JYWZValB9fVJqTWnyI0RQYHBOZpUST 84EpI68k3tDMwNTQxMzSwNTSzFhJnJftyvk0IYH0xJLU7NTUgtQimD4mDk6pBqZgpoL9E622 fT2/vFmmdwnP3/Ouiw6L9JtkS7fbz4q4fy7pwQXJjNSOA9otZwLq79ZlzO1WYekKcjG6ZNNY u/656vOVDA/veWy6+Pis2+FzM//NargWXRXBEDm3u6F4imTOD54gCyX9hSemlxUfLjvhn/ZS qn6HwS8TgUkyD93L3TdV7ja7F31s9WY+BkaGn7cLZul2/HSRDqs+s6np0KlvOw6uajl17gir 5Ym9WW3pKmoO2ZPvNfg6rvv0e7LafAm/zqwy4a+PmVfnHLjNV1s0wd58VUfb8+7kh2cn/tpe 4jzNv2ti5/mXIVPEHrIa32Uv1zJbU2WRZHBe0jKB48bq+XvZPWx3fE+//GvajWYlluKMREMt 5qLiRAAGC6JwYQMAAA== X-CMS-MailID: 20250409143559eucas1p15613a03cfa20790ac031847e44ab2f52 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20250409122452eucas1p2fd6f06f30de0c6b37b510a10081b724a X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20250409122452eucas1p2fd6f06f30de0c6b37b510a10081b724a References: <20250409122131.2766719-1-arnd@kernel.org> <20250409122441.2875424-1-arnd@kernel.org> On 09.04.2025 14:24, Arnd Bergmann wrote: > From: Arnd Bergmann > > When building with W=1, this variable is unused for configs with > CONFIG_CMA_SIZE_SEL_PERCENTAGE=y: > > kernel/dma/contiguous.c:67:26: error: 'size_bytes' defined but not used [-Werror=unused-const-variable=] > > Change this to a macro to avoid the warning. > > Fixes: c64be2bb1c6e ("drivers: add Contiguous Memory Allocator") > Signed-off-by: Arnd Bergmann Thanks, applied to dma-mapping-fixes branch. > --- > v3: use a macro instead of constant > v2: fix spelling mistake. > --- > kernel/dma/contiguous.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c > index 055da410ac71..88888f4c1c73 100644 > --- a/kernel/dma/contiguous.c > +++ b/kernel/dma/contiguous.c > @@ -64,8 +64,7 @@ struct cma *dma_contiguous_default_area; > * Users, who want to set the size of global CMA area for their system > * should use cma= kernel parameter. > */ > -static const phys_addr_t size_bytes __initconst = > - (phys_addr_t)CMA_SIZE_MBYTES * SZ_1M; > +#define size_bytes (CMA_SIZE_MBYTES * SZ_1M) > static phys_addr_t size_cmdline __initdata = -1; > static phys_addr_t base_cmdline __initdata; > static phys_addr_t limit_cmdline __initdata; Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland