The function vmw_master_check() might return -ERESTARTSYS if there is a
signal pending, indicating that the IOCTL should be rerun, potentially from
user-space. At that point we shouldn't print out an error message since that
is not an error condition. In short, avoid bloating the kernel log when a
process refuses to die on SIGTERM.
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
Reviewed-by: Jakob Bornecrantz <jakob@xxxxxxxxxx>
---
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 25f3c25..daeca57 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -1063,8 +1063,12 @@ static long vmw_generic_ioctl(struct file *filp, unsigned int cmd,
vmaster = vmw_master_check(dev, file_priv, flags);
if (unlikely(IS_ERR(vmaster))) {
- DRM_INFO("IOCTL ERROR %d\n", nr);
- return PTR_ERR(vmaster);
+ ret = PTR_ERR(vmaster);
+
+ if (ret != -ERESTARTSYS)
+ DRM_INFO("IOCTL ERROR Command %d, Error %ld.\n",
+ nr, ret);
+ return ret;
}
ret = ioctl_func(filp, cmd, arg);
--
1.8.3.2
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