Hi Marek,

Thank you for the patch.

On Wed, May 07, 2025 at 06:09:13PM +0200, Marek Szyprowski wrote:

Use common wrappers operating directly on the struct sg_table objects to fix incorrect use of scatterlists sync calls. dma_sync_sg_for_*() functions have to be called with the number of elements originally passed to dma_map_sg_*() function, not the one returned in sgtable's nents.

Fixes: d33186d0be18 ("[media] omap3isp: ccdc: Use the DMA API for LSC") Fixes: 0e24e90f2ca7 ("[media] omap3isp: stat: Use the DMA API") CC: stable@vger.kernel.org Signed-off-by: Marek Szyprowski m.szyprowski@samsung.com

Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com

---

drivers/media/platform/ti/omap3isp/ispccdc.c | 8 ++++---- drivers/media/platform/ti/omap3isp/ispstat.c | 6 ++---- 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/media/platform/ti/omap3isp/ispccdc.c b/drivers/media/platform/ti/omap3isp/ispccdc.c index dd375c4e180d..7d0c723dcd11 100644 --- a/drivers/media/platform/ti/omap3isp/ispccdc.c +++ b/drivers/media/platform/ti/omap3isp/ispccdc.c @@ -446,8 +446,8 @@ static int ccdc_lsc_config(struct isp_ccdc_device *ccdc, if (ret < 0) goto done;

• dma_sync_sg_for_cpu(isp->dev, req->table.sgt.sgl,
  

• 		    req->table.sgt.nents, DMA_TO_DEVICE);
  

• dma_sync_sgtable_for_cpu(isp->dev, &req->table.sgt,
  

• 			 DMA_TO_DEVICE);
  

if (copy_from_user(req->table.addr, config->lsc, req->config.size)) { @@ -455,8 +455,8 @@ static int ccdc_lsc_config(struct isp_ccdc_device *ccdc, goto done; }

• dma_sync_sg_for_device(isp->dev, req->table.sgt.sgl,
  

• 		       req->table.sgt.nents, DMA_TO_DEVICE);
  

• dma_sync_sgtable_for_device(isp->dev, &req->table.sgt,
  

• 			    DMA_TO_DEVICE);
  

  }

spin_lock_irqsave(&ccdc->lsc.req_lock, flags); diff --git a/drivers/media/platform/ti/omap3isp/ispstat.c b/drivers/media/platform/ti/omap3isp/ispstat.c index 359a846205b0..d3da68408ecb 100644 --- a/drivers/media/platform/ti/omap3isp/ispstat.c +++ b/drivers/media/platform/ti/omap3isp/ispstat.c @@ -161,8 +161,7 @@ static void isp_stat_buf_sync_for_device(struct ispstat *stat, if (ISP_STAT_USES_DMAENGINE(stat)) return;

• dma_sync_sg_for_device(stat->isp->dev, buf->sgt.sgl,

• 	       buf->sgt.nents, DMA_FROM_DEVICE);
  

• dma_sync_sgtable_for_device(stat->isp->dev, &buf->sgt, DMA_FROM_DEVICE);

} static void isp_stat_buf_sync_for_cpu(struct ispstat *stat, @@ -171,8 +170,7 @@ static void isp_stat_buf_sync_for_cpu(struct ispstat *stat, if (ISP_STAT_USES_DMAENGINE(stat)) return;

• dma_sync_sg_for_cpu(stat->isp->dev, buf->sgt.sgl,

• 	    buf->sgt.nents, DMA_FROM_DEVICE);
  

• dma_sync_sgtable_for_cpu(stat->isp->dev, &buf->sgt, DMA_FROM_DEVICE);

} static void isp_stat_buf_clear(struct ispstat *stat)