From: Ulf Hansson <ulf.hansson@linaro.org>
To: "Rafael J . Wysocki" <rjw@rjwysocki.net>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Lina Iyer <ilina@codeaurora.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 4/5] drivers: firmware: psci: Simplify error path of psci_dt_init()
Date: Wed, 13 Mar 2019 09:36:58 +0100 [thread overview]
Message-ID: <20190313083659.7100-5-ulf.hansson@linaro.org> (raw)
In-Reply-To: <20190313083659.7100-1-ulf.hansson@linaro.org>
Instead of having each psci init function taking care of the of_node_put(),
let's deal with that from psci_dt_init(), as this enables a bit simpler
error path for each psci init function.
Cc: Lina Iyer <ilina@codeaurora.org>
Co-developed-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
---
drivers/firmware/psci/psci.c | 23 ++++++++++-------------
1 file changed, 10 insertions(+), 13 deletions(-)
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index 9788bfc1cf8b..e480e0af632c 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -609,9 +609,9 @@ static int __init psci_0_2_init(struct device_node *np)
int err;
err = get_set_conduit_method(np);
-
if (err)
- goto out_put_node;
+ return err;
+
/*
* Starting with v0.2, the PSCI specification introduced a call
* (PSCI_VERSION) that allows probing the firmware version, so
@@ -619,11 +619,7 @@ static int __init psci_0_2_init(struct device_node *np)
* can be carried out according to the specific version reported
* by firmware
*/
- err = psci_probe();
-
-out_put_node:
- of_node_put(np);
- return err;
+ return psci_probe();
}
/*
@@ -635,9 +631,8 @@ static int __init psci_0_1_init(struct device_node *np)
int err;
err = get_set_conduit_method(np);
-
if (err)
- goto out_put_node;
+ return err;
pr_info("Using PSCI v0.1 Function IDs from DT\n");
@@ -661,9 +656,7 @@ static int __init psci_0_1_init(struct device_node *np)
psci_ops.migrate = psci_migrate;
}
-out_put_node:
- of_node_put(np);
- return err;
+ return 0;
}
static const struct of_device_id psci_of_match[] __initconst = {
@@ -678,6 +671,7 @@ int __init psci_dt_init(void)
struct device_node *np;
const struct of_device_id *matched_np;
psci_initcall_t init_fn;
+ int ret;
np = of_find_matching_node_and_match(NULL, psci_of_match, &matched_np);
@@ -685,7 +679,10 @@ int __init psci_dt_init(void)
return -ENODEV;
init_fn = (psci_initcall_t)matched_np->data;
- return init_fn(np);
+ ret = init_fn(np);
+
+ of_node_put(np);
+ return ret;
}
#ifdef CONFIG_ACPI
--
2.17.1
next prev parent reply other threads:[~2019-03-13 8:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-13 8:36 [PATCH v2 0/5] drivers: firmware: psci: Some cleanup and refactoring Ulf Hansson
2019-03-13 8:36 ` [PATCH v2 1/5] drivers: firmware: psci: Move psci to separate directory Ulf Hansson
2019-03-13 8:36 ` [PATCH v2 2/5] MAINTAINERS: Update files for PSCI Ulf Hansson
2019-03-13 8:36 ` [PATCH v2 3/5] drivers: firmware: psci: Split psci_dt_cpu_init_idle() Ulf Hansson
2019-03-13 8:36 ` Ulf Hansson [this message]
2019-03-13 8:36 ` [PATCH v2 5/5] drivers: firmware: psci: Announce support for OS initiated suspend mode Ulf Hansson
2019-03-22 9:58 ` [PATCH v2 0/5] drivers: firmware: psci: Some cleanup and refactoring Ulf Hansson
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