From 9e67f24e4d90858bfec2dbac84d5380db3926bd5 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Mon, 14 Jun 2021 13:23:40 +0200 Subject: [PATCH] media: ti-vpe: cal: fix ctx uninitialization Somewhere along the way the context uninitialization has gone a bit odd: * We have cal_ctx_create() but no matching destroy call, but we still need to call cal_ctx_v4l2_cleanup() for each context. * We have cal_media_cleanup() which calls cal_ctx_v4l2_cleanup() for all contexts, but cal_media_init() is not where the contexts are created. * The order of uninit steps in cal_remove() is different than the error handling path in cal_probe(). * cal_probe()'s error handling calls cal_ctx_v4l2_cleanup() for each context, but also calls cal_media_clean(), doing the same context cleanup twice. So fix these, by introducing cal_ctx_destroy(), and using that in appropriate places instead of calling cal_ctx_v4l2_cleanup() in cal_media_clean(). Also use normal kzalloc (and kfree) instead of devm version as we anyway do manual cleanup for each context. Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/ti-vpe/cal.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c index 9bba07647610..cce627c5519c 100644 --- a/drivers/media/platform/ti-vpe/cal.c +++ b/drivers/media/platform/ti-vpe/cal.c @@ -908,11 +908,6 @@ static int cal_media_init(struct cal_dev *cal) */ static void cal_media_cleanup(struct cal_dev *cal) { - unsigned int i; - - for (i = 0; i < cal->num_contexts; i++) - cal_ctx_v4l2_cleanup(cal->ctx[i]); - v4l2_device_unregister(&cal->v4l2_dev); media_device_cleanup(&cal->mdev); @@ -929,7 +924,7 @@ static struct cal_ctx *cal_ctx_create(struct cal_dev *cal, int inst) struct cal_ctx *ctx; int ret; - ctx = devm_kzalloc(cal->dev, sizeof(*ctx), GFP_KERNEL); + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return NULL; @@ -948,6 +943,13 @@ static struct cal_ctx *cal_ctx_create(struct cal_dev *cal, int inst) return ctx; } +static void cal_ctx_destroy(struct cal_ctx *ctx) +{ + cal_ctx_v4l2_cleanup(ctx); + + kfree(ctx); +} + static const struct of_device_id cal_of_match[] = { { .compatible = "ti,dra72-cal", @@ -1162,7 +1164,7 @@ static int cal_probe(struct platform_device *pdev) error_context: for (i = 0; i < cal->num_contexts; i++) - cal_ctx_v4l2_cleanup(cal->ctx[i]); + cal_ctx_destroy(cal->ctx[i]); error_camerarx: for (i = 0; i < cal->data->num_csi2_phy; i++) @@ -1191,11 +1193,14 @@ static int cal_remove(struct platform_device *pdev) for (i = 0; i < cal->data->num_csi2_phy; i++) cal_camerarx_disable(cal->phy[i]); - cal_media_cleanup(cal); + for (i = 0; i < cal->num_contexts; i++) + cal_ctx_destroy(cal->ctx[i]); for (i = 0; i < cal->data->num_csi2_phy; i++) cal_camerarx_destroy(cal->phy[i]); + cal_media_cleanup(cal); + if (ret >= 0) pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); -- 2.34.1