diff options
| author | Jack Wang <jinpu.wang@ionos.com> | 2022-08-26 12:12:27 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2022-08-29 18:08:48 +0200 |
| commit | 551e325bbd3fb8b5a686ac1e6cf76e5641461cf2 (patch) | |
| tree | 6e2623cbbfc4dc16682f137ec1d2e3e6f621c64c /drivers/hsi | |
| parent | 0f1a3e5f81f6309cf0d894faca128772ffc3e9a4 (diff) | |
| download | lwn-551e325bbd3fb8b5a686ac1e6cf76e5641461cf2.tar.gz lwn-551e325bbd3fb8b5a686ac1e6cf76e5641461cf2.zip | |
HSI: omap_ssi_port: Fix dma_map_sg error check
dma_map_sg return 0 on error, in case of error return -EIO
to caller.
Cc: Sebastian Reichel <sre@kernel.org>
Cc: linux-kernel@vger.kernel.org (open list)
Fixes: b209e047bc74 ("HSI: Introduce OMAP SSI driver")
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/hsi')
| -rw-r--r-- | drivers/hsi/controllers/omap_ssi_port.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/hsi/controllers/omap_ssi_port.c b/drivers/hsi/controllers/omap_ssi_port.c index a0cb5be246e1..b9495b720f1b 100644 --- a/drivers/hsi/controllers/omap_ssi_port.c +++ b/drivers/hsi/controllers/omap_ssi_port.c @@ -230,10 +230,10 @@ static int ssi_start_dma(struct hsi_msg *msg, int lch) if (msg->ttype == HSI_MSG_READ) { err = dma_map_sg(&ssi->device, msg->sgt.sgl, msg->sgt.nents, DMA_FROM_DEVICE); - if (err < 0) { + if (!err) { dev_dbg(&ssi->device, "DMA map SG failed !\n"); pm_runtime_put_autosuspend(omap_port->pdev); - return err; + return -EIO; } csdp = SSI_DST_BURST_4x32_BIT | SSI_DST_MEMORY_PORT | SSI_SRC_SINGLE_ACCESS0 | SSI_SRC_PERIPHERAL_PORT | @@ -247,10 +247,10 @@ static int ssi_start_dma(struct hsi_msg *msg, int lch) } else { err = dma_map_sg(&ssi->device, msg->sgt.sgl, msg->sgt.nents, DMA_TO_DEVICE); - if (err < 0) { + if (!err) { dev_dbg(&ssi->device, "DMA map SG failed !\n"); pm_runtime_put_autosuspend(omap_port->pdev); - return err; + return -EIO; } csdp = SSI_SRC_BURST_4x32_BIT | SSI_SRC_MEMORY_PORT | SSI_DST_SINGLE_ACCESS0 | SSI_DST_PERIPHERAL_PORT | |