diff mbox series

fpga: stratix10-soc: fix NULL vs IS_ERR() checking

Message ID 20211211134332.21679-1-linmq006@gmail.com (mailing list archive)
State New
Headers show
Series fpga: stratix10-soc: fix NULL vs IS_ERR() checking | expand

Commit Message

Miaoqian Lin Dec. 11, 2021, 1:43 p.m. UTC 
The stratix10_svc_allocate_memory function does not return NULL. It
returns ERR_PTR(-ENOMEM). Use IS_ERR check the return value.

Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/fpga/stratix10-soc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Tom Rix Dec. 11, 2021, 2:05 p.m. UTC | #1 
On 12/11/21 5:43 AM, Miaoqian Lin wrote:
> The stratix10_svc_allocate_memory function does not return NULL. It
> returns ERR_PTR(-ENOMEM). Use IS_ERR check the return value.
>
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> ---
>   drivers/fpga/stratix10-soc.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/fpga/stratix10-soc.c b/drivers/fpga/stratix10-soc.c
> index 047fd7f23706..2d2687a90ae6 100644
> --- a/drivers/fpga/stratix10-soc.c
> +++ b/drivers/fpga/stratix10-soc.c
> @@ -213,7 +213,7 @@ static int s10_ops_write_init(struct fpga_manager *mgr,
>   	/* Allocate buffers from the service layer's pool. */
>   	for (i = 0; i < NUM_SVC_BUFS; i++) {
>   		kbuf = stratix10_svc_allocate_memory(priv->chan, SVC_BUF_SIZE);
> -		if (!kbuf) {
> +		if (IS_ERR(kbuf)) {
>   			s10_free_buffers(mgr);
>   			ret = -ENOMEM;

This should also change to

ret = PTR_ERR(kbuf)

Tom

>   			goto init_done;
diff mbox series

Patch

diff --git a/drivers/fpga/stratix10-soc.c b/drivers/fpga/stratix10-soc.c
index 047fd7f23706..2d2687a90ae6 100644
--- a/drivers/fpga/stratix10-soc.c
+++ b/drivers/fpga/stratix10-soc.c
@@ -213,7 +213,7 @@  static int s10_ops_write_init(struct fpga_manager *mgr,
 	/* Allocate buffers from the service layer's pool. */
 	for (i = 0; i < NUM_SVC_BUFS; i++) {
 		kbuf = stratix10_svc_allocate_memory(priv->chan, SVC_BUF_SIZE);
-		if (!kbuf) {
+		if (IS_ERR(kbuf)) {
 			s10_free_buffers(mgr);
 			ret = -ENOMEM;
 			goto init_done;