[dpdk-dev] [PATCH v2] bus/dpaa: fix fd check before close

[wangyunjian]

From: Yunjian Wang <wangyunjian at huawei.com>

The fd is possibly a negative value while it is passed as an
argument to function "close". Fix the check to the fd.

Fixes: b9c94167904f ("bus/dpaa: decouple FQ portal alloc and init")
Cc: stable at dpdk.org

Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
---
v2:
   Remove duplicated check suggested by Ferruh Yigit
---
 drivers/bus/dpaa/base/qbman/qman_driver.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/bus/dpaa/base/qbman/qman_driver.c b/drivers/bus/dpaa/base/qbman/qman_driver.c
index a466c698f..6d9aaff16 100644
--- a/drivers/bus/dpaa/base/qbman/qman_driver.c
+++ b/drivers/bus/dpaa/base/qbman/qman_driver.c
@@ -142,7 +142,7 @@ struct qman_portal *fsl_qman_fq_portal_create(int *fd)
 	struct qm_portal_config *q_pcfg;
 	struct dpaa_ioctl_irq_map irq_map;
 	struct dpaa_ioctl_portal_map q_map = {0};
-	int q_fd = 0, ret;
+	int q_fd, ret;
 
 	q_pcfg = kzalloc((sizeof(struct qm_portal_config)), 0);
 	if (!q_pcfg) {
@@ -179,7 +179,7 @@ struct qman_portal *fsl_qman_fq_portal_create(int *fd)
 	if (!portal) {
 		pr_err("Qman portal initialisation failed (%d)\n",
 		       q_pcfg->cpu);
-		goto err;
+		goto err_alloc;
 	}
 
 	irq_map.type = dpaa_portal_qman;
@@ -188,9 +188,9 @@ struct qman_portal *fsl_qman_fq_portal_create(int *fd)
 
 	*fd = q_fd;
 	return portal;
+err_alloc:
+	close(q_fd);
 err:
-	if (q_fd)
-		close(q_fd);
 	process_portal_unmap(&q_map.addr);
 	kfree(q_pcfg);
 	return NULL;
-- 
2.23.0