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Message-Id: <20220819060801.10443-4-jinpu.wang@ionos.com>
Date: Fri, 19 Aug 2022 08:07:45 +0200
From: Jack Wang <jinpu.wang@...os.com>
To: linux-kernel@...r.kernel.org
Cc: Sebastian Reichel <sre@...nel.org>
Subject: [PATCH v1 03/19] 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@...nel.org>
Cc: linux-kernel@...r.kernel.org (open list)
Signed-off-by: Jack Wang <jinpu.wang@...os.com>
---
drivers/hsi/controllers/omap_ssi_port.c | 8 ++++----
1 file 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 |
--
2.34.1
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