From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9100E384D34; Sat, 28 Feb 2026 17:36:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300189; cv=none; b=l8JOE5n3Sx9DuYKFOVyZyU3FYkyl1LO8ZXES5kY9/v9yp9nliz6cHtN5hWjsV7Hwd1d29td9X1fXEAyLPGAghhPu16rIz0K9AHCLVfJjD45ZYZVvNWEHH5DtoR5tePyqMpo1JJoY/4DyzTfmlXuWhXDrN42tZbtjDWK1Quxp3YE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300189; c=relaxed/simple; bh=CtX7F1+uI6Vv4EUT1MpP0djRM3AlH1CCr5sbpgeLqKY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=aAEWffqLHNSqXNqJas0CbETGT/5GAMTnFd3Qq1/ldQeKRwJ8V8KKkfvnZHP5/z1FxC8YrXswkUv9bW8KcGOxsv1DNXtjMCbyDLVutQnpMVe6gDx6PlYD5MAVSTOImcUBloHrhYlRUIWJuHTTYGcxP/rGE1qbtB8oTFGGD48Ushc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DF9B2e+9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DF9B2e+9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DFA7EC19423; Sat, 28 Feb 2026 17:36:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300189; bh=CtX7F1+uI6Vv4EUT1MpP0djRM3AlH1CCr5sbpgeLqKY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DF9B2e+9GA63cInla/HmKiWQYPIc2lOQKYdILNlnC/RNIBJPEqol6OdvXvQiaX1Su WdOYqTzvlC+DvBRqfTj7MaoMk/vKR1wregCbdqxrzLuNnfq2G06W24/RqaZhCAtECg IFLyc+rbN6lKFrGSvotbqcXB19cNrdy7uiURe+x4YVwEmXb+J+nW5dIz/OcW5fRpfD D6i7KemiNPIsH+96ZeHmVCLRPZyFD2X/NQTaCZLA9t9/nVMlBktHPbGe/0ge64hV/X x3ER13km0FgTuLm45vdDuzI0y39ZvUEiVxtJeBFwnuxcD4eYyW2bHzfJyu0zHuSbrH itl5bza7EBjdg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ludovic Desroches , Manikandan Muralidharan , Sasha Levin Subject: [PATCH 6.19 207/844] drm/atmel-hlcdc: don't reject the commit if the src rect has fractional parts Date: Sat, 28 Feb 2026 12:22:00 -0500 Message-ID: <20260228173244.1509663-208-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Ludovic Desroches [ Upstream commit 06682206e2a1883354ed758c09efeb51f435adbd ] Don’t reject the commit when the source rectangle has fractional parts. This can occur due to scaling: drm_atomic_helper_check_plane_state() calls drm_rect_clip_scaled(), which may introduce fractional parts while computing the clipped source rectangle. This does not imply the commit is invalid, so we should accept it instead of discarding it. Signed-off-by: Ludovic Desroches Reviewed-by: Manikandan Muralidharan Link: https://patch.msgid.link/20251120-lcd_scaling_fix-v1-1-5ffc98557923@microchip.com Signed-off-by: Manikandan Muralidharan Signed-off-by: Sasha Levin --- .../gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c index c0075894dc422..ec1fb5f9549a2 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c @@ -79,8 +79,6 @@ drm_plane_state_to_atmel_hlcdc_plane_state(struct drm_plane_state *s) return container_of(s, struct atmel_hlcdc_plane_state, base); } -#define SUBPIXEL_MASK 0xffff - static uint32_t rgb_formats[] = { DRM_FORMAT_C8, DRM_FORMAT_XRGB4444, @@ -745,24 +743,15 @@ static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p, if (ret || !s->visible) return ret; - hstate->src_x = s->src.x1; - hstate->src_y = s->src.y1; - hstate->src_w = drm_rect_width(&s->src); - hstate->src_h = drm_rect_height(&s->src); + hstate->src_x = s->src.x1 >> 16; + hstate->src_y = s->src.y1 >> 16; + hstate->src_w = drm_rect_width(&s->src) >> 16; + hstate->src_h = drm_rect_height(&s->src) >> 16; hstate->crtc_x = s->dst.x1; hstate->crtc_y = s->dst.y1; hstate->crtc_w = drm_rect_width(&s->dst); hstate->crtc_h = drm_rect_height(&s->dst); - if ((hstate->src_x | hstate->src_y | hstate->src_w | hstate->src_h) & - SUBPIXEL_MASK) - return -EINVAL; - - hstate->src_x >>= 16; - hstate->src_y >>= 16; - hstate->src_w >>= 16; - hstate->src_h >>= 16; - hstate->nplanes = fb->format->num_planes; if (hstate->nplanes > ATMEL_HLCDC_LAYER_MAX_PLANES) return -EINVAL; -- 2.51.0