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Wed, 9 Apr 2025 03:07:50 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: T2c1dd8538360b27d Date: Wed, 09 Apr 2025 09:07:30 +0200 From: "Arnd Bergmann" To: "Arnd Bergmann" , "Andrzej Hajda" , "Neil Armstrong" , "Robert Foss" , "Maarten Lankhorst" , "Maxime Ripard" , "Thomas Zimmermann" , "Dave Airlie" , "Simona Vetter" , "Nathan Chancellor" , "Heiko Stuebner" , "Andy Yan" Cc: "laurent.pinchart" , "Jonas Karlman" , "Jernej Skrabec" , "Nick Desaulniers" , "Bill Wendling" , "Justin Stitt" , "Dmitry Baryshkov" , "Doug Anderson" , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev Message-Id: <30e22523-216f-41a9-b931-e90136a45378@app.fastmail.com> In-Reply-To: <20250408175116.1770876-1-arnd@kernel.org> References: <20250408175116.1770876-1-arnd@kernel.org> Subject: Re: [PATCH] drm/bridge/synopsys: avoid field overflow warning Content-Type: text/plain Content-Transfer-Encoding: 7bit On Tue, Apr 8, 2025, at 19:51, Arnd Bergmann wrote: > From: Arnd Bergmann > > clang-16 and earlier complain about what it thinks might be an out of > range number: > > drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c:348:8: error: call to > __compiletime_assert_579 declared with 'error' attribute: FIELD_PREP: > value too large for the field > PHY_SYS_RATIO(tmp)); > ^ > drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c:90:27: note: expanded > from macro 'PHY_SYS_RATIO' > #define PHY_SYS_RATIO(x) FIELD_PREP(GENMASK(16, 0), x) > I still see the same build failure in some other configurations even with this patch. Please disregard this version, I'll try to come up with a better one. Arnd