Commit 2b5e9d5c authored Oct 21, 2016 by Satyajit Desai

coresight: tmc: skip tmc read if mem allocaiton failed



Add NULL pointer check to ensure that we do copy to user only
when we were able to allocate memory for ETR.

Change-Id: I09b4bc37617811fd4acd86a7e4f5ef91630675df
Signed-off-by: Satyajit Desai <sadesai@codeaurora.org>

parent 46aa49c1

drivers/hwtracing/coresight/coresight-tmc.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -1143,6 +1143,12 @@ static int tmc_read_prepare(struct tmc_drvdata *drvdata)
		goto err;
		}

		if (drvdata->config_type == TMC_CONFIG_TYPE_ETR &&
		drvdata->vaddr == NULL) {
		ret = -ENOMEM;
		goto err;
		}

		if (!drvdata->enable)
		goto out;