Re: [PATCH v3] drm/msm/a6xx: use __unused__ to fix compiler warnings for gen7_* includes

From: Abhinav Kumar
Date: Wed Jun 05 2024 - 14:31:55 EST


Hi Nathan

On 6/5/2024 11:05 AM, Nathan Chancellor wrote:
Hi Abhinav,

Just a drive by style comment.

On Tue, Jun 04, 2024 at 05:38:28PM -0700, Abhinav Kumar wrote:
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index 0a7717a4fc2f..a958e2b3c025 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -8,19 +8,15 @@
#include "a6xx_gpu_state.h"
#include "a6xx_gmu.xml.h"
-/* Ignore diagnostics about register tables that we aren't using yet. We don't
- * want to modify these headers too much from their original source.
- */
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-variable"
-#pragma GCC diagnostic ignored "-Wunused-const-variable"
+static const unsigned int *gen7_0_0_external_core_regs[] __attribute((__unused__));
+static const unsigned int *gen7_2_0_external_core_regs[] __attribute((__unused__));
+static const unsigned int *gen7_9_0_external_core_regs[] __attribute((__unused__));
+static struct gen7_sptp_cluster_registers gen7_9_0_sptp_clusters[] __attribute((__unused__));

Please do not open code attributes. This is available as either
'__always_unused' or '__maybe_unused', depending on the context.
checkpatch would have warned about this if it was '__attribute__'
instead of '__attribute'.


Thanks for the note. Let me update the patch to use __always_unused.

Cheers,
Nathan