From 6556ff32f12d0a5380dd2fa6bbaa01373925a7d1 Mon Sep 17 00:00:00 2001 From: Taehee Yoo Date: Sat, 1 Feb 2020 16:43:30 +0000 Subject: [PATCH] netdevsim: use IS_ERR instead of IS_ERR_OR_NULL for debugfs Debugfs APIs return valid pointer or error pointer. it doesn't return NULL. So, using IS_ERR is enough, not using IS_ERR_OR_NULL. Reviewed-by: Jakub Kicinski Reported-by: kbuild test robot Reported-by: Dan Carpenter Signed-off-by: Taehee Yoo Signed-off-by: Jakub Kicinski --- drivers/net/netdevsim/bpf.c | 10 ++++++---- drivers/net/netdevsim/dev.c | 16 ++++++++-------- drivers/net/netdevsim/health.c | 4 ++-- 3 files changed, 16 insertions(+), 14 deletions(-) diff --git a/drivers/net/netdevsim/bpf.c b/drivers/net/netdevsim/bpf.c index 2b74425..0b362b8 100644 --- a/drivers/net/netdevsim/bpf.c +++ b/drivers/net/netdevsim/bpf.c @@ -218,6 +218,7 @@ static int nsim_bpf_create_prog(struct nsim_dev *nsim_dev, { struct nsim_bpf_bound_prog *state; char name[16]; + int ret; state = kzalloc(sizeof(*state), GFP_KERNEL); if (!state) @@ -230,9 +231,10 @@ static int nsim_bpf_create_prog(struct nsim_dev *nsim_dev, /* Program id is not populated yet when we create the state. */ sprintf(name, "%u", nsim_dev->prog_id_gen++); state->ddir = debugfs_create_dir(name, nsim_dev->ddir_bpf_bound_progs); - if (IS_ERR_OR_NULL(state->ddir)) { + if (IS_ERR(state->ddir)) { + ret = PTR_ERR(state->ddir); kfree(state); - return -ENOMEM; + return ret; } debugfs_create_u32("id", 0400, state->ddir, &prog->aux->id); @@ -587,8 +589,8 @@ int nsim_bpf_dev_init(struct nsim_dev *nsim_dev) nsim_dev->ddir_bpf_bound_progs = debugfs_create_dir("bpf_bound_progs", nsim_dev->ddir); - if (IS_ERR_OR_NULL(nsim_dev->ddir_bpf_bound_progs)) - return -ENOMEM; + if (IS_ERR(nsim_dev->ddir_bpf_bound_progs)) + return PTR_ERR(nsim_dev->ddir_bpf_bound_progs); nsim_dev->bpf_dev = bpf_offload_dev_create(&nsim_bpf_dev_ops, nsim_dev); err = PTR_ERR_OR_ZERO(nsim_dev->bpf_dev); diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index 273a242..5c5427c 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -77,11 +77,11 @@ static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev) sprintf(dev_ddir_name, DRV_NAME "%u", nsim_dev->nsim_bus_dev->dev.id); nsim_dev->ddir = debugfs_create_dir(dev_ddir_name, nsim_dev_ddir); - if (IS_ERR_OR_NULL(nsim_dev->ddir)) - return PTR_ERR_OR_ZERO(nsim_dev->ddir) ?: -EINVAL; + if (IS_ERR(nsim_dev->ddir)) + return PTR_ERR(nsim_dev->ddir); nsim_dev->ports_ddir = debugfs_create_dir("ports", nsim_dev->ddir); - if (IS_ERR_OR_NULL(nsim_dev->ports_ddir)) - return PTR_ERR_OR_ZERO(nsim_dev->ports_ddir) ?: -EINVAL; + if (IS_ERR(nsim_dev->ports_ddir)) + return PTR_ERR(nsim_dev->ports_ddir); debugfs_create_bool("fw_update_status", 0600, nsim_dev->ddir, &nsim_dev->fw_update_status); debugfs_create_u32("max_macs", 0600, nsim_dev->ddir, @@ -115,8 +115,8 @@ static int nsim_dev_port_debugfs_init(struct nsim_dev *nsim_dev, sprintf(port_ddir_name, "%u", nsim_dev_port->port_index); nsim_dev_port->ddir = debugfs_create_dir(port_ddir_name, nsim_dev->ports_ddir); - if (IS_ERR_OR_NULL(nsim_dev_port->ddir)) - return -ENOMEM; + if (IS_ERR(nsim_dev_port->ddir)) + return PTR_ERR(nsim_dev_port->ddir); sprintf(dev_link_name, "../../../" DRV_NAME "%u", nsim_dev->nsim_bus_dev->dev.id); @@ -934,8 +934,8 @@ int nsim_dev_port_del(struct nsim_bus_dev *nsim_bus_dev, int nsim_dev_init(void) { nsim_dev_ddir = debugfs_create_dir(DRV_NAME, NULL); - if (IS_ERR_OR_NULL(nsim_dev_ddir)) - return -ENOMEM; + if (IS_ERR(nsim_dev_ddir)) + return PTR_ERR(nsim_dev_ddir); return 0; } diff --git a/drivers/net/netdevsim/health.c b/drivers/net/netdevsim/health.c index 9aa637d..30595b1 100644 --- a/drivers/net/netdevsim/health.c +++ b/drivers/net/netdevsim/health.c @@ -285,8 +285,8 @@ int nsim_dev_health_init(struct nsim_dev *nsim_dev, struct devlink *devlink) } health->ddir = debugfs_create_dir("health", nsim_dev->ddir); - if (IS_ERR_OR_NULL(health->ddir)) { - err = PTR_ERR_OR_ZERO(health->ddir) ?: -EINVAL; + if (IS_ERR(health->ddir)) { + err = PTR_ERR(health->ddir); goto err_dummy_reporter_destroy; } -- 2.7.4