From: Zheng Yongjun zhengyongjun3@huawei.com
commit 65ea840afd508194b0ee903256162aa87e46ec30 upstream.
In case of error, the function stratix10_svc_allocate_memory() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR().
Fixes: e7eef1d7633a ("fpga: add intel stratix10 soc fpga manager driver") Signed-off-by: Zheng Yongjun zhengyongjun3@huawei.com Reviewed-by: Russ Weight russell.h.weight@intel.com Cc: stable@vger.kernel.org Acked-by: Xu Yilun yilun.xu@intel.com Link: https://lore.kernel.org/r/20221126071430.19540-1-zhengyongjun3@huawei.com Signed-off-by: Xu Yilun yilun.xu@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/fpga/stratix10-soc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/fpga/stratix10-soc.c +++ b/drivers/fpga/stratix10-soc.c @@ -218,9 +218,9 @@ static int s10_ops_write_init(struct fpg /* 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; + ret = PTR_ERR(kbuf); goto init_done; }