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linux: dma-test-common: Fix DMA re-init sequence

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DMA channel is re-init based on incorrect previous and current
channel change check, fix the same. Add DMA cookie pointer info
logs for easy debugging.

Bug 4742850

Change-Id: Iec5dd32ffb3699c5d57961949597c2c80ef250ad
Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3330635
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
This commit is contained in:
Nagarjuna Kristam
2025-04-01 14:43:21 +05:30
committed by Jon Hunter
parent 6dbef270d8
commit 3a9f9b5d12
1 changed files with 4 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
include/linux/tegra-pcie-edma-test-common.h
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@@ -380,9 +380,9 @@ static int edmalib_common_test(struct edmalib_common *edma)
edma->tsz = (u64)edma->stress_count * (nents_per_ch) * (u64)edma->dma_size * 8UL;
if (!edma->cookie || ((edma->prev_edma_ch & 0xFF) != edma->edma_ch)) {
dev_info(edma->fdev, "%s: re-init edma lib prev_ch(%x) != current chans(%x)\n",
__func__, edma->prev_edma_ch, edma->edma_ch);
if (!edma->cookie || ((edma->prev_edma_ch & 0xFF) != (edma->edma_ch & 0xFF))) {
dev_info(edma->fdev, "%s: re-init edma lib prev_ch(%x) != current chans(%x); edma cookie:%p\n",
__func__, edma->prev_edma_ch, edma->edma_ch, edma->cookie);
ret = tegra_pcie_dma_initialize(&info, &edma->cookie);
if (ret != TEGRA_PCIE_DMA_SUCCESS) {
dev_info(edma->fdev, "%s: tegra_pcie_dma_initialize() fail: %d\n",
@@ -524,6 +524,7 @@ static int edmalib_common_test(struct edmalib_common *edma)
dev_err(edma->fdev, "CRC check pass\n");
}
dev_info(edma->fdev, "%s: return success, coockie %p\n", __func__, edma->cookie);
return 0;
fail:
if (ret != TEGRA_PCIE_DMA_DEINIT) {