dmaengine: fsl-dpaa2-qdma: Fix the size of dma pools

[ Upstream commit b73e43dcd7a8be26880ef8ff336053b29e79dbc5 ]

In case of long format of qDMA command descriptor, there are one frame
descriptor, three entries in the frame list and two data entries. So the
size of dma_pool_create for these three fields should be the same with
the total size of entries respectively, or the contents may be overwritten
by the next allocated descriptor.

Fixes: 7fdf9b05c73b ("dmaengine: fsl-dpaa2-qdma: Add NXP dpaa2 qDMA controller driver for Layerscape SoCs")
Signed-off-by: Guanhua Gao <guanhua.gao@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240118162917.2951450-1-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c b/drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c
index a42a376..da91bc9 100644 (file)
--- a/drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c
+++ b/drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c
@@ -38,15 +38,17 @@ static int dpaa2_qdma_alloc_chan_resources(struct dma_chan *chan)
        if (!dpaa2_chan->fd_pool)
                goto err;
 
-       dpaa2_chan->fl_pool = dma_pool_create("fl_pool", dev,
-                                             sizeof(struct dpaa2_fl_entry),
-                                             sizeof(struct dpaa2_fl_entry), 0);
+       dpaa2_chan->fl_pool =
+               dma_pool_create("fl_pool", dev,
+                                sizeof(struct dpaa2_fl_entry) * 3,
+                                sizeof(struct dpaa2_fl_entry), 0);
+
        if (!dpaa2_chan->fl_pool)
                goto err_fd;
 
        dpaa2_chan->sdd_pool =
                dma_pool_create("sdd_pool", dev,
-                               sizeof(struct dpaa2_qdma_sd_d),
+                               sizeof(struct dpaa2_qdma_sd_d) * 2,
                                sizeof(struct dpaa2_qdma_sd_d), 0);
        if (!dpaa2_chan->sdd_pool)
                goto err_fl;