From 2d2d92bc2583cbfbe4d156f5fdf6c49789c94a6f Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Thu, 28 Mar 2024 12:24:55 +0200 Subject: [PATCH] drm/i915: use fine grained -Woverride-init disable 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. Note that we've tried this before with commit 88e9664434c9 ("drm/i915: use localized __diag_ignore_all() instead of per file") and reverted in commit 290d16104575 ("Revert "drm/i915: use localized __diag_ignore_all() instead of per file""). The issue turned out to be in __diag_ignore_all() and it was fixed by commit 689b097a06ba ("compiler-gcc: Suppress -Wmissing-prototypes warning for all supported GCC"). So we should be able to pull this off now. Cc: Arnd Bergmann Cc: Lucas De Marchi Acked-by: Arnd Bergmann Reviewed-by: Lucas De Marchi Link: https://patchwork.freedesktop.org/patch/msgid/20240328102455.944131-1-jani.nikula@intel.com Signed-off-by: Jani Nikula --- 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 +++++ drivers/gpu/drm/xe/Makefile | 3 --- 5 files changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 3ef6ed41e62b..87d6ba8d2341 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -32,11 +32,6 @@ endif # Enable -Werror in CI and development 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) - # Support compiling the display code separately for both i915 and xe # drivers. Define I915 when building i915. subdir-ccflags-y += -DI915 diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c b/drivers/gpu/drm/i915/display/intel_display_device.c index c02d79b50006..b8903bd0e82a 100644 --- a/drivers/gpu/drm/i915/display/intel_display_device.c +++ b/drivers/gpu/drm/i915/display/intel_display_device.c @@ -17,6 +17,9 @@ #include "intel_display_reg_defs.h" #include "intel_fbc.h" +__diag_push(); +__diag_ignore_all("-Woverride-init", "Allow field initialization overrides for display info"); + static const struct intel_display_device_info no_display = {}; #define PIPE_A_OFFSET 0x70000 @@ -768,6 +771,8 @@ static const struct intel_display_device_info xe2_lpd_display = { BIT(INTEL_FBC_C) | BIT(INTEL_FBC_D), }; +__diag_pop(); + /* * Separate detection for no display cases to keep the display id array simple. * diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index 99894a855ef0..43855c6c3509 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -135,6 +135,9 @@ 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 field initialization overrides for fb ops"); + static const struct fb_ops intelfb_ops = { .owner = THIS_MODULE, __FB_DEFAULT_DEFERRED_OPS_RDWR(intel_fbdev), @@ -146,6 +149,8 @@ static const struct fb_ops intelfb_ops = { .fb_mmap = intel_fbdev_mmap, }; +__diag_pop(); + static int intelfb_create(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 1e69783ae4fd..405ca17a990b 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 field initialization overrides for device info"); + #define PLATFORM(x) .platform = (x) #define GEN(x) \ .__runtime.graphics.ip.ver = (x), \ @@ -785,6 +788,8 @@ 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 diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile index c531210695db..1f9b57eb5e7d 100644 --- a/drivers/gpu/drm/xe/Makefile +++ b/drivers/gpu/drm/xe/Makefile @@ -169,9 +169,6 @@ subdir-ccflags-$(CONFIG_DRM_XE_DISPLAY) += \ -Ddrm_i915_gem_object=xe_bo \ -Ddrm_i915_private=xe_device -CFLAGS_i915-display/intel_fbdev.o = $(call cc-disable-warning, override-init) -CFLAGS_i915-display/intel_display_device.o = $(call cc-disable-warning, override-init) - # Rule to build SOC code shared with i915 $(obj)/i915-soc/%.o: $(srctree)/drivers/gpu/drm/i915/soc/%.c FORCE $(call cmd,force_checksrc) -- 2.25.1