diff options
| author | Ben Dooks <ben.dooks@sifive.com> | 2022-07-08 18:01:52 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2022-07-21 18:03:08 +0530 |
| commit | 86cb0defe0e275453bc39e856bb523eb425a6537 (patch) | |
| tree | 29c0aa6ad2ce00e753e36e847efdd6c448e7dd01 /drivers/dma/dw-axi-dmac | |
| parent | 4348d99efa01fe030eb625495de8b9f3578b5c7d (diff) | |
dmaengine: dw-axi-dmac: do not print NULL LLI during error
During debugging we have seen an issue where axi_chan_dump_lli()
is passed a NULL LLI pointer which ends up causing an OOPS due
to trying to get fields from it. Simply print NULL LLI and exit
to avoid this.
Signed-off-by: Ben Dooks <ben.dooks@sifive.com>
Link: https://lore.kernel.org/r/20220708170153.269991-3-ben.dooks@sifive.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/dw-axi-dmac')
| -rw-r--r-- | drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c index e9c9bcb1f5c2..abc2a919a11c 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c @@ -982,6 +982,11 @@ static int dw_axi_dma_chan_slave_config(struct dma_chan *dchan, static void axi_chan_dump_lli(struct axi_dma_chan *chan, struct axi_dma_hw_desc *desc) { + if (!desc->lli) { + dev_err(dchan2dev(&chan->vc.chan), "NULL LLI\n"); + return; + } + dev_err(dchan2dev(&chan->vc.chan), "SAR: 0x%llx DAR: 0x%llx LLP: 0x%llx BTS 0x%x CTL: 0x%x:%08x", le64_to_cpu(desc->lli->sar), |