From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mathieu Poirier <mathieu.poirier@linaro.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Mike Leach <mike.leach@linaro.org>,
linux-kernel@vger.kernel.org,
Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1] coresight: Drop double check for ACPI companion device
Date: Fri, 29 May 2020 16:32:10 +0300 [thread overview]
Message-ID: <20200529133210.20566-1-andriy.shevchenko@linux.intel.com> (raw)
acpi_dev_get_resources() does perform the NULL pointer check against
ACPI companion device which is given as function parameter. Thus,
there is no need to duplicate this check in the caller.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/hwtracing/coresight/coresight-stm.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c
index b908ca104645..673d2f56ed1e 100644
--- a/drivers/hwtracing/coresight/coresight-stm.c
+++ b/drivers/hwtracing/coresight/coresight-stm.c
@@ -727,8 +727,6 @@ static int acpi_stm_get_stimulus_area(struct device *dev, struct resource *res)
struct acpi_device *adev = ACPI_COMPANION(dev);
- if (!adev)
- return -ENODEV;
rc = acpi_dev_get_resources(adev, &res_list, NULL, NULL);
if (rc < 0)
return rc;
--
2.26.2
next reply other threads:[~2020-05-29 13:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 13:32 Andy Shevchenko [this message]
2020-06-01 19:57 ` [PATCH v1] coresight: Drop double check for ACPI companion device Mathieu Poirier
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