This is a note to let you know that I've just added the patch titled
drm/mediatek: Use cmdq_pkt_create() and cmdq_pkt_destroy()
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-mediatek-use-cmdq_pkt_create-and-cmdq_pkt_destro.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ee994303f84bbac9b125d421b1384f1078defce4
Author: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx>
Date: Sat Aug 10 09:09:15 2024 +0000
drm/mediatek: Use cmdq_pkt_create() and cmdq_pkt_destroy()
[ Upstream commit d7c66b5fbc70d09348f3e0414ebf360c3125f3fa ]
Use cmdq_pkt_create() and cmdq_pkt_destroy() common function
instead of implementing drm version.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240810090918.7457-3-chunkuang.hu@xxxxxxxxxx/
Stable-dep-of: 4018651ba5c4 ("drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy()")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/mediatek/mtk_crtc.c b/drivers/gpu/drm/mediatek/mtk_crtc.c
index a90504359e8d2..4bee0328bdbee 100644
--- a/drivers/gpu/drm/mediatek/mtk_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_crtc.c
@@ -120,44 +120,6 @@ static void mtk_drm_finish_page_flip(struct mtk_crtc *mtk_crtc)
spin_unlock_irqrestore(&mtk_crtc->config_lock, flags);
}
-#if IS_REACHABLE(CONFIG_MTK_CMDQ)
-static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
- size_t size)
-{
- struct device *dev;
- dma_addr_t dma_addr;
-
- pkt->va_base = kzalloc(size, GFP_KERNEL);
- if (!pkt->va_base)
- return -ENOMEM;
-
- pkt->buf_size = size;
- pkt->cl = (void *)client;
-
- dev = client->chan->mbox->dev;
- dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
- DMA_TO_DEVICE);
- if (dma_mapping_error(dev, dma_addr)) {
- dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
- kfree(pkt->va_base);
- return -ENOMEM;
- }
-
- pkt->pa_base = dma_addr;
-
- return 0;
-}
-
-static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
-{
- struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
-
- dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
- DMA_TO_DEVICE);
- kfree(pkt->va_base);
-}
-#endif
-
static void mtk_crtc_destroy(struct drm_crtc *crtc)
{
struct mtk_crtc *mtk_crtc = to_mtk_crtc(crtc);
@@ -165,7 +127,7 @@ static void mtk_crtc_destroy(struct drm_crtc *crtc)
mtk_mutex_put(mtk_crtc->mutex);
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+ cmdq_pkt_destroy(&mtk_crtc->cmdq_client, &mtk_crtc->cmdq_handle);
if (mtk_crtc->cmdq_client.chan) {
mbox_free_channel(mtk_crtc->cmdq_client.chan);
@@ -1122,9 +1084,9 @@ int mtk_crtc_create(struct drm_device *drm_dev, const unsigned int *path,
mbox_free_channel(mtk_crtc->cmdq_client.chan);
mtk_crtc->cmdq_client.chan = NULL;
} else {
- ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
- &mtk_crtc->cmdq_handle,
- PAGE_SIZE);
+ ret = cmdq_pkt_create(&mtk_crtc->cmdq_client,
+ &mtk_crtc->cmdq_handle,
+ PAGE_SIZE);
if (ret) {
dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
drm_crtc_index(&mtk_crtc->base));
