lkml.org 
[lkml]   [2017]   [Sep]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/2] rapidio: Fix an error handling in 'rio_dma_transfer()'
Date
In case of error, 'dma_map_sg()' returns 0, not a negative value.
There is BUG_ON() in 'dma_map_sg_attrs()' which makes sure of that.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
drivers/rapidio/devices/rio_mport_cdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c
index 76afe1449cab..3dd37e35cf4e 100644
--- a/drivers/rapidio/devices/rio_mport_cdev.c
+++ b/drivers/rapidio/devices/rio_mport_cdev.c
@@ -961,7 +961,7 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode,

nents = dma_map_sg(chan->device->dev,
req->sgt.sgl, req->sgt.nents, dir);
- if (nents == -EFAULT) {
+ if (nents == 0) {
rmcd_error("Failed to map SG list");
ret = -EFAULT;
goto err_pg;
--
2.11.0
\
 
 \ /
  Last update: 2017-09-18 00:36    [W:0.063 / U:1.220 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site