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HSI: omap_ssi_port: Fix dma_map_sg error check

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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>
This commit is contained in:
Jack Wang 2022-08-26 12:12:27 +02:00 committed by Sebastian Reichel
parent 0f1a3e5f81
commit 551e325bbd
1 changed files with 4 additions and 4 deletions
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8
drivers/hsi/controllers/omap_ssi_port.c
View File

@ -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 |