linux-kernel - [PATCH] media: rcar-vin: work around -Wenum-compare-conditional warning

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Message-Id: <20240322133353.908957-1-arnd@kernel.org>
Date: Fri, 22 Mar 2024 14:33:46 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: Niklas Söderlund <niklas.soderlund@...natech.se>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Jacopo Mondi <jacopo+renesas@...ndi.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: Arnd Bergmann <arnd@...db.de>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	linux-media@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev
Subject: [PATCH] media: rcar-vin: work around -Wenum-compare-conditional warning

From: Arnd Bergmann <arnd@...db.de>

clang-19 warns about mixing two enum types here:

drivers/media/platform/renesas/rcar-vin/rcar-vin.h:296:12: error: conditional expression between different enumeration types ('enum rvin_csi_id' and 'enum rvin_isp_id') [-Werror,-Wenum-compare-conditional]
drivers/media/platform/renesas/rcar-vin/rcar-core.c:216:18: error: conditional expression between different enumeration types ('enum rvin_csi_id' and 'enum rvin_isp_id') [-Werror,-Wenum-compare-conditional]
drivers/media/platform/renesas/rcar-vin/rcar-vin.h:296:12: error: conditional expression between different enumeration types ('enum rvin_csi_id' and 'enum rvin_isp_id') [-Werror,-Wenum-compare-conditional]
drivers/media/platform/renesas/rcar-vin/rcar-vin.h:296:12: error: conditional expression between different enumeration types ('enum rvin_csi_id' and 'enum rvin_isp_id') [-Werror,-Wenum-compare-conditional]

This one is intentional, and there is already a cast to work around another
warning, so address this by adding another cast.

Fixes: 406bb586dec0 ("media: rcar-vin: Add r8a779a0 support")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
There are only a couple of -Wenum-compare-conditional warnings in the tree,
so it seems best to just address them all instead of turning off the warning
globally.
---
 drivers/media/platform/renesas/rcar-vin/rcar-vin.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-vin.h b/drivers/media/platform/renesas/rcar-vin/rcar-vin.h
index 792336dada44..997a66318a29 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-vin.h
@@ -59,7 +59,7 @@ enum rvin_isp_id {
 
 #define RVIN_REMOTES_MAX \
 	(((unsigned int)RVIN_CSI_MAX) > ((unsigned int)RVIN_ISP_MAX) ? \
-	 RVIN_CSI_MAX : RVIN_ISP_MAX)
+	 (unsigned int)RVIN_CSI_MAX : (unsigned int)RVIN_ISP_MAX)
 
 /**
  * enum rvin_dma_state - DMA states
-- 
2.39.2