From: Robert Foss <robert.foss@linaro.org>
Date: Thu, 12 Aug 2021 09:21:52 +0000 (+0200)
Subject: media: camss: vfe: Don't call hw_version() before its dependencies are met
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=745b475e7e10ae1e8c538e5db89494411ee1c22b;p=linux.git

media: camss: vfe: Don't call hw_version() before its dependencies are met

vfe->ops->hw_version(vfe) is being called before vfe->base has been
assigned, and before the hardware has been powered up.

Fixes: b10b5334528a9 ("media: camss: vfe: Don't read hardware version needlessly")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---

diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
index 6b2f33fc9be22..71f78b40e7f55 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -604,6 +604,8 @@ static int vfe_get(struct vfe_device *vfe)
 		vfe_reset_output_maps(vfe);
 
 		vfe_init_outputs(vfe);
+
+		vfe->ops->hw_version(vfe);
 	} else {
 		ret = vfe_check_clock_rates(vfe);
 		if (ret < 0)
@@ -1299,7 +1301,6 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
 		return -EINVAL;
 	}
 	vfe->ops->subdev_init(dev, vfe);
-	vfe->ops->hw_version(vfe);
 
 	/* Memory */