This is a note to let you know that I've just added the patch titled
coresight: etm4x: Remove bogous __exit annotation for some functions
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
coresight-etm4x-remove-bogous-__exit-annotation-for-.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e4ba6ce7761d7d20e162fb8670875e3311dc9186
Author: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Date: Fri Sep 29 10:16:37 2023 +0200
coresight: etm4x: Remove bogous __exit annotation for some functions
[ Upstream commit 348ddab81f7b0983d9fb158df910254f08d3f887 ]
etm4_platform_driver (which lives in ".data" contains a reference to
etm4_remove_platform_dev(). So the latter must not be marked with __exit
which results in the function being discarded for a build with
CONFIG_CORESIGHT_SOURCE_ETM4X=y which in turn makes the remove pointer
contain invalid data.
etm4x_amba_driver referencing etm4_remove_amba() has the same issue.
Drop the __exit annotations for the two affected functions and a third
one that is called by the other two.
For reasons I don't understand this isn't catched by building with
CONFIG_DEBUG_SECTION_MISMATCH=y.
Fixes: c23bc382ef0e ("coresight: etm4x: Refactor probing routine")
Fixes: 5214b563588e ("coresight: etm4x: Add support for sysreg only devices")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Reviewed-by: James Clark <james.clark@xxxxxxx>
Link: https://lore.kernel.org/all/20230929081540.yija47lsj35xtj4v@xxxxxxxxxxxxxx/
Link: https://lore.kernel.org/r/20230929081637.2377335-1-u.kleine-koenig@xxxxxxxxxxxxxx
Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index e2cccd6ea1f1d..26d0d4485ae99 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -2041,7 +2041,7 @@ static void clear_etmdrvdata(void *info)
etmdrvdata[cpu] = NULL;
}
-static void __exit etm4_remove_dev(struct etmv4_drvdata *drvdata)
+static void etm4_remove_dev(struct etmv4_drvdata *drvdata)
{
etm_perf_symlink(drvdata->csdev, false);
/*
@@ -2064,7 +2064,7 @@ static void __exit etm4_remove_dev(struct etmv4_drvdata *drvdata)
coresight_unregister(drvdata->csdev);
}
-static void __exit etm4_remove_amba(struct amba_device *adev)
+static void etm4_remove_amba(struct amba_device *adev)
{
struct etmv4_drvdata *drvdata = dev_get_drvdata(&adev->dev);
@@ -2072,7 +2072,7 @@ static void __exit etm4_remove_amba(struct amba_device *adev)
etm4_remove_dev(drvdata);
}
-static int __exit etm4_remove_platform_dev(struct platform_device *pdev)
+static int etm4_remove_platform_dev(struct platform_device *pdev)
{
struct etmv4_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
