[PATCH 14/14] drm/amd/pm: Replace one-element array with flexible-array in struct ATOM_Vega10_GFXCLK_Dependency_Table

Gustavo A. R. Silva gustavoars at kernel.org
Wed Oct 7 16:11:33 UTC 2020


There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members”[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].

Use a flexible-array member in struct ATOM_Vega10_GFXCLK_Dependency_Table
instead of a one-element array.

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.9-rc1/process/deprecated.html#zero-length-and-one-element-arrays

Build-tested-by: kernel test robot <lkp at intel.com>
Link: https://lore.kernel.org/lkml/5f7d61dd.O8jxxI5C6P9FOb%2Fd%25lkp@intel.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars at kernel.org>
---
 drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h
index c934e9612c1b..a6968009acc4 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h
@@ -163,7 +163,7 @@ typedef struct _ATOM_Vega10_MCLK_Dependency_Record {
 typedef struct _ATOM_Vega10_GFXCLK_Dependency_Table {
     UCHAR ucRevId;
     UCHAR ucNumEntries;                                         /* Number of entries. */
-    ATOM_Vega10_GFXCLK_Dependency_Record entries[1];            /* Dynamically allocate entries. */
+    ATOM_Vega10_GFXCLK_Dependency_Record entries[];             /* Dynamically allocate entries. */
 } ATOM_Vega10_GFXCLK_Dependency_Table;
 
 typedef struct _ATOM_Vega10_MCLK_Dependency_Table {
-- 
2.27.0



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