From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 00136370AEE; Wed, 20 May 2026 18:34:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779302055; cv=none; b=Apn9mGptU0Q/r5y+Sh6dfjdhcfUqe1PrxNt5BWSBtDTGy407HhkbO/zggsPpkZVQsek6Ke1eQ1+kgFVkV/sjtP7a2poz8gIawWXslaGe14uEHWGCke5wouUH21YcxYc9zkhbTagb3ekOKX853HVeaNWiRSRc+Gxa/ieAKPcJQJ0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779302055; c=relaxed/simple; bh=0eqiMnkI3tkSFrP0xANNbPlOjfcHJpTqlbxtE2bGW6s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WOWQLD9I5PyzTu8ZVm0CtBBJK4vREE9FFJoeAI7s6zWzkKypkc6I3gKAs/5rrtgT8TUl7Cby4Z1riPJ3SmSFCbuM1Z6rMKsoKFFldfYBVyvclBYnq/hlXJZKPbTCDTBSCQUh0tJSTqTi8wOzN+qyLdVO6R2bDsfExfxk/0uS4Do= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=az54V+x1; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="az54V+x1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 64D6D1F000E9; Wed, 20 May 2026 18:34:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779302053; bh=qQ+80lnGJQMnXys+0mHwTgQ2C9ehN5hIB5Vq2DMw36E=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=az54V+x1DryWWHj3tk2ul7dwYN36GDdV2omQCTalce5YsRZqs0zCyjsvNWhjmEKpD XUTpyWyF8MJbGhSiByriZIeOGQd0HRL2oL2wdvXxzzAj2ORWehJavzyQWGEf0iO9yO qjvxJEttprQKQvvw73WtIlFn/c6+SeAOqGTzJ6ok= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dmitry Baryshkov , Douglas Anderson , Neil Armstrong , Sasha Levin Subject: [PATCH 6.6 119/508] drm/panel: sharp-ls043t1le01: make use of prepare_prev_first Date: Wed, 20 May 2026 18:19:02 +0200 Message-ID: <20260520162101.206195854@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260520162058.573354582@linuxfoundation.org> References: <20260520162058.573354582@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry Baryshkov [ Upstream commit c222177d7c7e1b2e0433d9e47ec2da7015345d50 ] The DSI link must be powered up to let panel driver to talk to the panel during prepare() callback execution. Set the prepare_prev_first flag to guarantee this. Fixes: 9e15123eca79 ("drm/msm/dsi: Stop unconditionally powering up DSI hosts at modeset") Signed-off-by: Dmitry Baryshkov Reviewed-by: Douglas Anderson Signed-off-by: Neil Armstrong Link: https://patch.msgid.link/20260323-panel-fix-v1-1-9f12b09161e8@oss.qualcomm.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c index 855e64444daa6..58f201720e699 100644 --- a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c +++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c @@ -224,6 +224,7 @@ static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt) drm_panel_init(&sharp_nt->base, &sharp_nt->dsi->dev, &sharp_nt_panel_funcs, DRM_MODE_CONNECTOR_DSI); + sharp_nt->base.prepare_prev_first = true; ret = drm_panel_of_backlight(&sharp_nt->base); if (ret) -- 2.53.0