From patchwork Thu Mar 7 15:18:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 13585877 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 504EAC48BF6 for ; Thu, 7 Mar 2024 15:18:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9D6E610F4AA; Thu, 7 Mar 2024 15:18:22 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="kCxYtpSR"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) by gabe.freedesktop.org (Postfix) with ESMTPS id D153610F4A4 for ; Thu, 7 Mar 2024 15:18:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709824702; x=1741360702; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=iUILy0rIa840R3T7+qfuXvQZhOI5on1UGqoONN/6J8o=; b=kCxYtpSRFPqHWt9d9b2OVxdJs0ELILTccMwUt2nsjo51fnECF4B6UY7n mS2NkftAVsyeKQ0fcj19bUkvgLmWMsReBxrk+keROgiXDEiQ/unveRnWg A/aZtDpLcZM/rMPqjBsla3dPBMGryrLo6NyQ08QGvS0y6hODdetEldZuV lq0JRipwaA2l7M8RpXOXSJKkwSNwn/GWGytJSLtvzauvzPfVkaQwHt3d1 edrUZzSU5CmsgUX1n3UnozDH78132PRuBT5w35YV/m8w1ATrTnUys8j0g caP0gSwKKcEmB27r5ReuOf4g7udWdvDsxOTSbKHIkPzu8lCR7qa+j7hLp w==; X-IronPort-AV: E=McAfee;i="6600,9927,11006"; a="26969180" X-IronPort-AV: E=Sophos;i="6.07,211,1708416000"; d="scan'208";a="26969180" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Mar 2024 07:18:22 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,11006"; a="827774792" X-IronPort-AV: E=Sophos;i="6.07,211,1708416000"; d="scan'208";a="827774792" Received: from stinkpipe.fi.intel.com (HELO stinkbox) ([10.237.72.74]) by orsmga001.jf.intel.com with SMTP; 07 Mar 2024 07:18:19 -0800 Received: by stinkbox (sSMTP sendmail emulation); Thu, 07 Mar 2024 17:18:19 +0200 From: Ville Syrjala To: intel-gfx@lists.freedesktop.org Subject: [PATCH 3/4] drm/i915: Use container_of_const() for states Date: Thu, 7 Mar 2024 17:18:09 +0200 Message-ID: <20240307151810.24208-4-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240307151810.24208-1-ville.syrjala@linux.intel.com> References: <20240307151810.24208-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Ville Syrjälä commit 64f6a5d1922b ("container_of: add container_of_const() that preserves const-ness of the pointer") is nice. Let's use it so that we don't accidentally cast away the const from our state pointers. The only thing I don't particularly like about container_of_const() is that it still accepts void* in addition to the proper pointer types, but that's how most other things in C work anyway so I guess we can live with it. And while at it rename the macro arguments to be a bit more descriptive than just 'x'. TODO: maybe convert *all* container_of() uses to container_of_const()? Signed-off-by: Ville Syrjälä Reviewed-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_bw.h | 3 ++- drivers/gpu/drm/i915/display/intel_cdclk.h | 4 +++- drivers/gpu/drm/i915/display/intel_display_types.h | 14 ++++++++++---- drivers/gpu/drm/i915/display/intel_pmdemand.h | 5 ++--- drivers/gpu/drm/i915/display/intel_sdvo.c | 2 +- drivers/gpu/drm/i915/display/intel_tv.c | 3 ++- drivers/gpu/drm/i915/display/skl_watermark.h | 4 +++- 7 files changed, 23 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_bw.h b/drivers/gpu/drm/i915/display/intel_bw.h index 59cb4fc5db76..fa1e924ec961 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.h +++ b/drivers/gpu/drm/i915/display/intel_bw.h @@ -52,7 +52,8 @@ struct intel_bw_state { u8 num_active_planes[I915_MAX_PIPES]; }; -#define to_intel_bw_state(x) container_of((x), struct intel_bw_state, base) +#define to_intel_bw_state(global_state) \ + container_of_const((global_state), struct intel_bw_state, base) struct intel_bw_state * intel_atomic_get_old_bw_state(struct intel_atomic_state *state); diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.h b/drivers/gpu/drm/i915/display/intel_cdclk.h index fa301495e7f1..d4d60c636d70 100644 --- a/drivers/gpu/drm/i915/display/intel_cdclk.h +++ b/drivers/gpu/drm/i915/display/intel_cdclk.h @@ -75,7 +75,9 @@ int intel_cdclk_atomic_check(struct intel_atomic_state *state, struct intel_cdclk_state * intel_atomic_get_cdclk_state(struct intel_atomic_state *state); -#define to_intel_cdclk_state(x) container_of((x), struct intel_cdclk_state, base) +#define to_intel_cdclk_state(global_state) \ + container_of_const((global_state), struct intel_cdclk_state, base) + #define intel_atomic_get_old_cdclk_state(state) \ to_intel_cdclk_state(intel_atomic_get_old_global_obj_state(state, &to_i915(state->base.dev)->display.cdclk.obj)) #define intel_atomic_get_new_cdclk_state(state) \ diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index e67cd5b02e84..8b9860cefaae 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -661,7 +661,8 @@ struct intel_digital_connector_state { int broadcast_rgb; }; -#define to_intel_digital_connector_state(x) container_of(x, struct intel_digital_connector_state, base) +#define to_intel_digital_connector_state(conn_state) \ + container_of_const((conn_state), struct intel_digital_connector_state, base) struct dpll { /* given values */ @@ -1617,12 +1618,17 @@ struct intel_watermark_params { #define to_intel_atomic_state(x) container_of(x, struct intel_atomic_state, base) #define to_intel_crtc(x) container_of(x, struct intel_crtc, base) -#define to_intel_crtc_state(x) container_of(x, struct intel_crtc_state, uapi) #define to_intel_connector(x) container_of(x, struct intel_connector, base) #define to_intel_encoder(x) container_of(x, struct intel_encoder, base) -#define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base) #define to_intel_plane(x) container_of(x, struct intel_plane, base) -#define to_intel_plane_state(x) container_of(x, struct intel_plane_state, uapi) + +#define to_intel_crtc_state(crtc_state) \ + container_of_const((crtc_state), struct intel_crtc_state, uapi) +#define to_intel_plane_state(plane_state) \ + container_of_const((plane_state), struct intel_plane_state, uapi) +#define to_intel_framebuffer(fb) \ + container_of_const((fb), struct intel_framebuffer, base) + #define intel_fb_obj(x) ((x) ? to_intel_bo((x)->obj[0]) : NULL) struct intel_hdmi { diff --git a/drivers/gpu/drm/i915/display/intel_pmdemand.h b/drivers/gpu/drm/i915/display/intel_pmdemand.h index 2941a1a18b72..128fd61f8f14 100644 --- a/drivers/gpu/drm/i915/display/intel_pmdemand.h +++ b/drivers/gpu/drm/i915/display/intel_pmdemand.h @@ -43,9 +43,8 @@ struct intel_pmdemand_state { struct pmdemand_params params; }; -#define to_intel_pmdemand_state(x) container_of((x), \ - struct intel_pmdemand_state, \ - base) +#define to_intel_pmdemand_state(global_state) \ + container_of_const((global_state), struct intel_pmdemand_state, base) void intel_pmdemand_init_early(struct drm_i915_private *i915); int intel_pmdemand_init(struct drm_i915_private *i915); diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c index 0cd9c183f621..2b00ca44c14c 100644 --- a/drivers/gpu/drm/i915/display/intel_sdvo.c +++ b/drivers/gpu/drm/i915/display/intel_sdvo.c @@ -193,7 +193,7 @@ to_intel_sdvo_connector(struct drm_connector *connector) } #define to_intel_sdvo_connector_state(conn_state) \ - container_of((conn_state), struct intel_sdvo_connector_state, base.base) + container_of_const((conn_state), struct intel_sdvo_connector_state, base.base) static bool intel_sdvo_output_setup(struct intel_sdvo *intel_sdvo); diff --git a/drivers/gpu/drm/i915/display/intel_tv.c b/drivers/gpu/drm/i915/display/intel_tv.c index 2b77d399f1a1..ba5d2b7174b7 100644 --- a/drivers/gpu/drm/i915/display/intel_tv.c +++ b/drivers/gpu/drm/i915/display/intel_tv.c @@ -885,7 +885,8 @@ struct intel_tv_connector_state { bool bypass_vfilter; }; -#define to_intel_tv_connector_state(x) container_of(x, struct intel_tv_connector_state, base) +#define to_intel_tv_connector_state(conn_state) \ + container_of_const((conn_state), struct intel_tv_connector_state, base) static struct drm_connector_state * intel_tv_connector_duplicate_state(struct drm_connector *connector) diff --git a/drivers/gpu/drm/i915/display/skl_watermark.h b/drivers/gpu/drm/i915/display/skl_watermark.h index e3d1d74a7b17..3da93a019f46 100644 --- a/drivers/gpu/drm/i915/display/skl_watermark.h +++ b/drivers/gpu/drm/i915/display/skl_watermark.h @@ -64,7 +64,9 @@ struct intel_dbuf_state { struct intel_dbuf_state * intel_atomic_get_dbuf_state(struct intel_atomic_state *state); -#define to_intel_dbuf_state(x) container_of((x), struct intel_dbuf_state, base) +#define to_intel_dbuf_state(global_state) \ + container_of_const((global_state), struct intel_dbuf_state, base) + #define intel_atomic_get_old_dbuf_state(state) \ to_intel_dbuf_state(intel_atomic_get_old_global_obj_state(state, &to_i915(state->base.dev)->display.dbuf.obj)) #define intel_atomic_get_new_dbuf_state(state) \