mei: check for error codes that mei_flow_ctrl_creds retuns

we cannot use if(!mei_flow_ctrl_creds()) logic as
mei_flow_ctrl_creds also negative error codes

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index 93936f1b75eb1d89ac47a75284eebc3f1504df15..83e80bc08d776febbe32a421f9faf6c614f205b6 100644 (file)
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -1326,7 +1326,7 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
                        continue;
 
                if (cl != &dev->iamthif_cl) {
-                       if (!mei_flow_ctrl_creds(dev, cl)) {
+                       if (mei_flow_ctrl_creds(dev, cl) <= 0) {
                                dev_dbg(&dev->pdev->dev,
                                        "No flow control"
                                    " credentials for client"
@@ -1343,7 +1343,7 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
                } else if (cl == &dev->iamthif_cl) {
                        /* IAMTHIF IOCTL */
                        dev_dbg(&dev->pdev->dev, "complete amthi write cb.\n");
-                       if (!mei_flow_ctrl_creds(dev, cl)) {
+                       if (mei_flow_ctrl_creds(dev, cl) <= 0) {
                                dev_dbg(&dev->pdev->dev,
                                        "No flow control"
                                    " credentials for amthi"