iommu_domain_free() was called in isp_remove() before omap3isp_put().
omap3isp_put() must not save the context if the IOMMU no longer is there.
Fix this.
Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi>
---
The issue only seems to affect the staging/for_v3.4 branch in
media-tree.git.
drivers/media/video/omap3isp/isp.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/media/video/omap3isp/isp.c
b/drivers/media/video/omap3isp/isp.c
index 12d5f92..c3ff142 100644
--- a/drivers/media/video/omap3isp/isp.c
+++ b/drivers/media/video/omap3isp/isp.c
@@ -1112,7 +1112,8 @@ isp_restore_context(struct isp_device *isp, struct
isp_reg *reg_list)
static void isp_save_ctx(struct isp_device *isp)
{
isp_save_context(isp, isp_reg_list);
- omap_iommu_save_ctx(isp->dev);
+ if (isp->domain)
+ omap_iommu_save_ctx(isp->dev);
}
/*
@@ -1981,6 +1982,7 @@ static int isp_remove(struct platform_device *pdev)
omap3isp_get(isp);
iommu_detach_device(isp->domain, &pdev->dev);
iommu_domain_free(isp->domain);
+ isp->domain = NULL;
omap3isp_put(isp);
free_irq(isp->irq_num, isp);
--
1.7.2.5
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