On 8/29/2025 8:08 PM, Miaoqian Lin wrote:

Fix incorrect use of IS_ERR() to check devm_kzalloc() return value. devm_kzalloc() returns NULL on failure, not an error pointer.

This issue was introduced by commit 4277f035d227 ("coresight: trbe: Add a representative coresight_platform_data for TRBE") which replaced the original function but didn't update the error check.

Fixes: 4277f035d227 ("coresight: trbe: Add a representative coresight_platform_data for TRBE") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com

---

drivers/hwtracing/coresight/coresight-trbe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c index 8267dd1a2130..caf873adfc3a 100644 --- a/drivers/hwtracing/coresight/coresight-trbe.c +++ b/drivers/hwtracing/coresight/coresight-trbe.c @@ -1279,7 +1279,7 @@ static void arm_trbe_register_coresight_cpu(struct trbe_drvdata *drvdata, int cp * into the device for that purpose. */ desc.pdata = devm_kzalloc(dev, sizeof(*desc.pdata), GFP_KERNEL);

• if (IS_ERR(desc.pdata))

IS_ERR_OR_NULL(desc.pdata) would be better.

Thanks, Jie

• if (!desc.pdata) goto cpu_clear;

desc.type = CORESIGHT_DEV_TYPE_SINK;