linux-kernel - [PATCH v2] mux: adgs1408: fix Wvoid-pointer-to-enum-cast warning

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Message-ID: <20250501181819.164207-2-krzysztof.kozlowski@linaro.org>
Date: Thu,  1 May 2025 20:18:20 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Mircea Caprioru <mircea.caprioru@...log.com>,
	Peter Rosin <peda@...ntia.se>,
	linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v2] mux: adgs1408: fix Wvoid-pointer-to-enum-cast warning

'chip_id' is an enum, thus cast of pointer on 64-bit compile test with
W=1 causes:

  adgs1408.c:63:12: error: cast to smaller integer type 'enum adgs1408_chip_id' from 'const void *' [-Werror,-Wvoid-pointer-to-enum-cast]

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

---

Changes in v2:
1. Use kernel_ulong_t instead of uintptr_t
2. Rebase

Patch from 2023:
Link: https://lore.kernel.org/r/20230810095822.123181-1-krzysztof.kozlowski@linaro.org
---
 drivers/mux/adgs1408.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mux/adgs1408.c b/drivers/mux/adgs1408.c
index 5386cfedcb06..5eaf07d09ac9 100644
--- a/drivers/mux/adgs1408.c
+++ b/drivers/mux/adgs1408.c
@@ -59,7 +59,7 @@ static int adgs1408_probe(struct spi_device *spi)
 	s32 idle_state;
 	int ret;
 
-	chip_id = (enum adgs1408_chip_id)spi_get_device_match_data(spi);
+	chip_id = (kernel_ulong_t)spi_get_device_match_data(spi);
 
 	mux_chip = devm_mux_chip_alloc(dev, 1, 0);
 	if (IS_ERR(mux_chip))
-- 
2.45.2