Re: [PATCH] drm/i915: use localized __diag_ignore_all() instead of per file

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On Thu, 25 May 2023, Gustavo Sousa <gustavo.sousa@xxxxxxxxx> wrote:
> Quoting Jani Nikula (2023-05-25 18:06:53-03:00)
>>Use localized __diag_push(), __diag_ignore_all() with rationale, and
>>__diag_pop() for specific initializations instead of blanket disabling
>>of -Woverride-init across several files.
>>
>>Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
>
> Reviewed-by: Gustavo Sousa <gustavo.sousa@xxxxxxxxx>

Thanks, pushed to din.

BR,
Jani.

>
>>---
>> drivers/gpu/drm/i915/Makefile                       | 5 -----
>> drivers/gpu/drm/i915/display/intel_display_device.c | 5 +++++
>> drivers/gpu/drm/i915/display/intel_fbdev.c          | 5 +++++
>> drivers/gpu/drm/i915/i915_pci.c                     | 5 +++++
>> 4 files changed, 15 insertions(+), 5 deletions(-)
>>
>>diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
>>index 06374fc072d3..1c9ed4c52760 100644
>>--- a/drivers/gpu/drm/i915/Makefile
>>+++ b/drivers/gpu/drm/i915/Makefile
>>@@ -23,11 +23,6 @@ subdir-ccflags-y += $(call cc-disable-warning, unused-but-set-variable)
>> subdir-ccflags-y += $(call cc-disable-warning, frame-address)
>> subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
>> 
>>-# Fine grained warnings disable
>>-CFLAGS_i915_pci.o = $(call cc-disable-warning, override-init)
>>-CFLAGS_display/intel_display_device.o = $(call cc-disable-warning, override-init)
>>-CFLAGS_display/intel_fbdev.o = $(call cc-disable-warning, override-init)
>>-
>> subdir-ccflags-y += -I$(srctree)/$(src)
>> 
>> # Please keep these build lists sorted!
>>diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c b/drivers/gpu/drm/i915/display/intel_display_device.c
>>index a513ac8f71a3..464df1764a86 100644
>>--- a/drivers/gpu/drm/i915/display/intel_display_device.c
>>+++ b/drivers/gpu/drm/i915/display/intel_display_device.c
>>@@ -14,6 +14,9 @@
>> #include "intel_display_reg_defs.h"
>> #include "intel_fbc.h"
>> 
>>+__diag_push();
>>+__diag_ignore_all("-Woverride-init", "Allow overriding inherited members");
>>+
>> static const struct intel_display_device_info no_display = {};
>> 
>> #define PIPE_A_OFFSET                0x70000
>>@@ -650,6 +653,8 @@ static const struct intel_display_device_info xe_lpdp_display = {
>>                 BIT(TRANSCODER_C) | BIT(TRANSCODER_D),
>> };
>> 
>>+__diag_pop();
>>+
>> #undef INTEL_VGA_DEVICE
>> #undef INTEL_QUANTA_VGA_DEVICE
>> #define INTEL_VGA_DEVICE(id, info) { id, info }
>>diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
>>index aab1ae74a8f7..2c3f7befed17 100644
>>--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
>>+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
>>@@ -130,6 +130,9 @@ static int intel_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma)
>>         return i915_gem_fb_mmap(obj, vma);
>> }
>> 
>>+__diag_push();
>>+__diag_ignore_all("-Woverride-init", "Allow overriding the default ops");
>>+
>> static const struct fb_ops intelfb_ops = {
>>         .owner = THIS_MODULE,
>>         DRM_FB_HELPER_DEFAULT_OPS,
>>@@ -144,6 +147,8 @@ static const struct fb_ops intelfb_ops = {
>>         .fb_mmap = intel_fbdev_mmap,
>> };
>> 
>>+__diag_pop();
>>+
>> static int intelfb_alloc(struct drm_fb_helper *helper,
>>                          struct drm_fb_helper_surface_size *sizes)
>> {
>>diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
>>index 928975d5fe2f..3d7a5db9833b 100644
>>--- a/drivers/gpu/drm/i915/i915_pci.c
>>+++ b/drivers/gpu/drm/i915/i915_pci.c
>>@@ -38,6 +38,9 @@
>> #include "i915_reg.h"
>> #include "intel_pci_config.h"
>> 
>>+__diag_push();
>>+__diag_ignore_all("-Woverride-init", "Allow overriding inherited members");
>>+
>> #define PLATFORM(x) .platform = (x)
>> #define GEN(x) \
>>         .__runtime.graphics.ip.ver = (x), \
>>@@ -843,6 +846,8 @@ static const struct intel_device_info mtl_info = {
>> 
>> #undef PLATFORM
>> 
>>+__diag_pop();
>>+
>> /*
>>  * Make sure any device matches here are from most specific to most
>>  * general.  For example, since the Quanta match is based on the subsystem
>>-- 
>>2.39.2
>>

-- 
Jani Nikula, Intel Open Source Graphics Center



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