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Wed, 16 Aug 2023 13:19:21 -0700 (PDT) Date: Wed, 16 Aug 2023 20:19:06 +0000 Mime-Version: 1.0 X-B4-Tracking: v=1; b=H4sIADkv3WQC/x3NSw7CMAxF0a1UHmMpCVX5bAUxqMgLeEASbIiKq u6diOGZ3LuSQQVG52ElRROTkjv8bqDbY853sMRuCi7s3dFP3IpEjioNahzRkuLFaMhvxvLNxbj W54encY7ehfF0SIF6rCqSLP/R5bptPwOrzAp4AAAA X-Developer-Key: i=justinstitt@google.com; a=ed25519; pk=tC3hNkJQTpNX/gLKxTNQKDmiQl6QjBNCGKJINqAdJsE= X-Developer-Signature: v=1; a=ed25519-sha256; t=1692217160; l=1505; i=justinstitt@google.com; s=20230717; h=from:subject:message-id; bh=3i09RUBjajBo5aL6e0TrKmXYq85q23Jzin6ZTPYdgyY=; b=S4oTPqidmSx4pnXekqz3cAvXwTPXkBzQ1EIFWu9hSsoThdtp9eduwMFBcm4W1kNzVJZvIyFio YGlmbwClC6pBWurTU/dRHGUj2NmAVzjjY0yT3dMx3QDNiHt27E7UCjd X-Mailer: b4 0.12.3 Message-ID: <20230816-void-drivers-devfreq-event-exynos-ppmu-v1-1-3fac11083742@google.com> Subject: [PATCH] PM / devfreq: exynos-ppmu: fix clang -Wvoid-pointer-to-enum-cast warning From: Justin Stitt To: Chanwoo Choi , MyungJoo Ham , Kyungmin Park , Krzysztof Kozlowski , Alim Akhtar , Nathan Chancellor , Nick Desaulniers , Tom Rix Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, Justin Stitt X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230816_131925_555530_DFEB8148 X-CRM114-Status: GOOD ( 13.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org When building with clang 18 I see the following warning: | drivers/devfreq/event/exynos-ppmu.c:530:21: warning: cast to smaller | integer type 'enum exynos_ppmu_type' from 'const void *' [-Wvoid-pointer-to-enum-cast] | 530 | info->ppmu_type = (enum exynos_ppmu_type)of_id->data; This is due to the fact that `of_id->data` is a void* while `enum exynos_ppmu_type` has the size of an int. Cast `of_id->data` to a uintptr_t to silence the above warning for clang builds using W=1 Link: https://github.com/ClangBuiltLinux/linux/issues/1910 Reported-by: Nathan Chancellor Signed-off-by: Justin Stitt --- drivers/devfreq/event/exynos-ppmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- base-commit: 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 change-id: 20230816-void-drivers-devfreq-event-exynos-ppmu-64ad102497f2 Best regards, -- Justin Stitt diff --git a/drivers/devfreq/event/exynos-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c index 896a6cc93b00..f798e1d6994d 100644 --- a/drivers/devfreq/event/exynos-ppmu.c +++ b/drivers/devfreq/event/exynos-ppmu.c @@ -527,7 +527,7 @@ static int of_get_devfreq_events(struct device_node *np, of_id = of_match_device(exynos_ppmu_id_match, dev); if (of_id) - info->ppmu_type = (enum exynos_ppmu_type)of_id->data; + info->ppmu_type = (uintptr_t)of_id->data; else { of_node_put(events_np); return -EINVAL;