[PATCH 022/115] gpu: ion: IOCTL return success when error occurs

John Stultz
2013-12-13T22:45:52Z

From: Olav Haugan <ohaugan@codeaurora.org>

ION_IOC_MAP, ION_IOC_SHARE, and ION_IOC_IMPORT may return
success when an error occurs.

Add correct error handling to ION_IOC_MAP, ION_IOC_SHARE, and
ION_IOC_IMPORT.

Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
[jstultz: modified patch to apply to staging directory]
Signed-off-by: John Stultz <john.stultz@linaro.org>
---
drivers/staging/android/ion/ion.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index f536ce5..a054edd 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -1040,20 +1040,27 @@ static long ion_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
data.fd = ion_share_dma_buf(client, data.handle);
if (copy_to_user((void __user *)arg, &data, sizeof(data)))
return -EFAULT;
+ if (data.fd < 0)
+ return data.fd;
break;
}
case ION_IOC_IMPORT:
{
struct ion_fd_data data;
+ int ret = 0;
if (copy_from_user(&data, (void __user *)arg,
sizeof(struct ion_fd_data)))
return -EFAULT;
data.handle = ion_import_dma_buf(client, data.fd);
- if (IS_ERR(data.handle))
+ if (IS_ERR(data.handle)) {
+ ret = PTR_ERR(data.handle);
data.handle = NULL;
+ }
if (copy_to_user((void __user *)arg, &data,
sizeof(struct ion_fd_data)))
return -EFAULT;
+ if (ret < 0)
+ return ret;
break;
}
case ION_IOC_SYNC:
--
1.8.3.2