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

[ Upstream commit b73e43dcd7 ]

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: 7fdf9b05c7 ("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>
This commit is contained in:
Guanhua Gao 2024-01-18 11:29:16 -05:00 committed by Greg Kroah-Hartman
parent 725a9ac717
commit c75460bf7a
1 changed files with 6 additions and 4 deletions
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10
drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c
View File

@ -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;