From patchwork Tue Sep 22 11:34:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dafna Hirschfeld X-Patchwork-Id: 11792317 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0598959D for ; Tue, 22 Sep 2020 11:34:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E199523A79 for ; Tue, 22 Sep 2020 11:34:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726628AbgIVLeS (ORCPT ); Tue, 22 Sep 2020 07:34:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726623AbgIVLeQ (ORCPT ); Tue, 22 Sep 2020 07:34:16 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CE13C061755 for ; Tue, 22 Sep 2020 04:34:16 -0700 (PDT) Received: from guri.fritz.box (p200300c7cf13ec005877be1094b7a29d.dip0.t-ipconnect.de [IPv6:2003:c7:cf13:ec00:5877:be10:94b7:a29d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: dafna) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 2A71029B4CE; Tue, 22 Sep 2020 12:34:14 +0100 (BST) From: Dafna Hirschfeld To: linux-media@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, dafna.hirschfeld@collabora.com, helen.koike@collabora.com, ezequiel@collabora.com, hverkuil@xs4all.nl, kernel@collabora.com, dafna3@gmail.com, sakari.ailus@linux.intel.com, linux-rockchip@lists.infradead.org, mchehab@kernel.org, tfiga@chromium.org Subject: [PATCH v3 11/12] media: staging: rkisp1: use the right variants of spin_lock Date: Tue, 22 Sep 2020 13:34:01 +0200 Message-Id: <20200922113402.12442-12-dafna.hirschfeld@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200922113402.12442-1-dafna.hirschfeld@collabora.com> References: <20200922113402.12442-1-dafna.hirschfeld@collabora.com> Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org When locking, use either 'spin_lock' or 'spin_lock_irq' according to the context. There is nowhere need to use 'spin_lock_irqsave'. Outside of irq context, always use 'spin_lock_irq' to be on the safe side. Signed-off-by: Dafna Hirschfeld --- drivers/staging/media/rkisp1/rkisp1-capture.c | 15 ++++++-------- drivers/staging/media/rkisp1/rkisp1-params.c | 20 ++++++++----------- 2 files changed, 14 insertions(+), 21 deletions(-) diff --git a/drivers/staging/media/rkisp1/rkisp1-capture.c b/drivers/staging/media/rkisp1/rkisp1-capture.c index 1c762a369b63..012c0825a386 100644 --- a/drivers/staging/media/rkisp1/rkisp1-capture.c +++ b/drivers/staging/media/rkisp1/rkisp1-capture.c @@ -626,9 +626,8 @@ static void rkisp1_handle_buffer(struct rkisp1_capture *cap) { struct rkisp1_isp *isp = &cap->rkisp1->isp; struct rkisp1_buffer *curr_buf; - unsigned long flags; - spin_lock_irqsave(&cap->buf.lock, flags); + spin_lock(&cap->buf.lock); curr_buf = cap->buf.curr; if (curr_buf) { @@ -641,7 +640,7 @@ static void rkisp1_handle_buffer(struct rkisp1_capture *cap) } rkisp1_set_next_buf(cap); - spin_unlock_irqrestore(&cap->buf.lock, flags); + spin_unlock(&cap->buf.lock); } void rkisp1_capture_isr(struct rkisp1_device *rkisp1) @@ -716,7 +715,6 @@ static void rkisp1_vb2_buf_queue(struct vb2_buffer *vb) container_of(vbuf, struct rkisp1_buffer, vb); struct rkisp1_capture *cap = vb->vb2_queue->drv_priv; const struct v4l2_pix_format_mplane *pixm = &cap->pix.fmt; - unsigned long flags; unsigned int i; memset(ispbuf->buff_addr, 0, sizeof(ispbuf->buff_addr)); @@ -741,9 +739,9 @@ static void rkisp1_vb2_buf_queue(struct vb2_buffer *vb) swap(ispbuf->buff_addr[RKISP1_PLANE_CR], ispbuf->buff_addr[RKISP1_PLANE_CB]); - spin_lock_irqsave(&cap->buf.lock, flags); + spin_lock_irq(&cap->buf.lock); list_add_tail(&ispbuf->queue, &cap->buf.queue); - spin_unlock_irqrestore(&cap->buf.lock, flags); + spin_unlock_irq(&cap->buf.lock); } static int rkisp1_vb2_buf_prepare(struct vb2_buffer *vb) @@ -769,10 +767,9 @@ static int rkisp1_vb2_buf_prepare(struct vb2_buffer *vb) static void rkisp1_return_all_buffers(struct rkisp1_capture *cap, enum vb2_buffer_state state) { - unsigned long flags; struct rkisp1_buffer *buf; - spin_lock_irqsave(&cap->buf.lock, flags); + spin_lock_irq(&cap->buf.lock); if (cap->buf.curr) { vb2_buffer_done(&cap->buf.curr->vb.vb2_buf, state); cap->buf.curr = NULL; @@ -787,7 +784,7 @@ static void rkisp1_return_all_buffers(struct rkisp1_capture *cap, list_del(&buf->queue); vb2_buffer_done(&buf->vb.vb2_buf, state); } - spin_unlock_irqrestore(&cap->buf.lock, flags); + spin_unlock_irq(&cap->buf.lock); } /* diff --git a/drivers/staging/media/rkisp1/rkisp1-params.c b/drivers/staging/media/rkisp1/rkisp1-params.c index f0258b4258ed..986d293201e6 100644 --- a/drivers/staging/media/rkisp1/rkisp1-params.c +++ b/drivers/staging/media/rkisp1/rkisp1-params.c @@ -1300,16 +1300,15 @@ static void rkisp1_params_config_parameter(struct rkisp1_params *params) else rkisp1_csm_config(params, false); - spin_lock(¶ms->config_lock); + spin_lock_irq(¶ms->config_lock); /* apply the first buffer if there is one already */ if (params->is_streaming) rkisp1_params_apply_params_cfg(params, 0); - spin_unlock(¶ms->config_lock); + spin_unlock_irq(¶ms->config_lock); } -/* Not called when the camera active, thus not isr protection. */ void rkisp1_params_configure(struct rkisp1_params *params, enum rkisp1_fmt_raw_pat_type bayer_pat, enum v4l2_quantization quantization) @@ -1442,12 +1441,11 @@ static void rkisp1_params_vb2_buf_queue(struct vb2_buffer *vb) container_of(vbuf, struct rkisp1_buffer, vb); struct vb2_queue *vq = vb->vb2_queue; struct rkisp1_params *params = vq->drv_priv; - unsigned long flags; params_buf->vaddr = vb2_plane_vaddr(vb, 0); - spin_lock_irqsave(¶ms->config_lock, flags); + spin_lock_irq(¶ms->config_lock); list_add_tail(¶ms_buf->queue, ¶ms->params); - spin_unlock_irqrestore(¶ms->config_lock, flags); + spin_unlock_irq(¶ms->config_lock); } static int rkisp1_params_vb2_buf_prepare(struct vb2_buffer *vb) @@ -1465,7 +1463,6 @@ static void rkisp1_params_vb2_stop_streaming(struct vb2_queue *vq) struct rkisp1_params *params = vq->drv_priv; struct rkisp1_buffer *buf; struct list_head tmp_list; - unsigned long flags; INIT_LIST_HEAD(&tmp_list); @@ -1474,10 +1471,10 @@ static void rkisp1_params_vb2_stop_streaming(struct vb2_queue *vq) * and then we can iterate it and call vb2_buffer_done * without holding the lock */ - spin_lock_irqsave(¶ms->config_lock, flags); + spin_lock_irq(¶ms->config_lock); params->is_streaming = false; list_cut_position(&tmp_list, ¶ms->params, params->params.prev); - spin_unlock_irqrestore(¶ms->config_lock, flags); + spin_unlock_irq(¶ms->config_lock); list_for_each_entry(buf, &tmp_list, queue) vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); @@ -1487,11 +1484,10 @@ static int rkisp1_params_vb2_start_streaming(struct vb2_queue *queue, unsigned int count) { struct rkisp1_params *params = queue->drv_priv; - unsigned long flags; - spin_lock_irqsave(¶ms->config_lock, flags); + spin_lock_irq(¶ms->config_lock); params->is_streaming = true; - spin_unlock_irqrestore(¶ms->config_lock, flags); + spin_unlock_irq(¶ms->config_lock); return 0; }