FYI, Linus' latest rant shows up in bugzilla, but never made it to me,
just as the other replies from Artem and Hans. This just shows how
broken bugzilla is as a reporting tool. Please be a little more calm,
I've always taken reported regressions series and as a first priority,
but it really does not help if information is hidden away. Adding
Artem to the Cc list and drop bugzilla to make this work a bit better.
Artem, can you test the patch below? This fixes the broken dma_mask
handling in platform_device_register_full that could override a
perfectly valid mask with 0. If this doesn't work, can you throw
in a dump_stack() into the working kernel build to see where
platform_device_register_full and setup_pdev_dma_masks get called
for your system?
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 7fa654f1288b..03035661eb6b 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -662,19 +662,6 @@ struct platform_device *platform_device_register_full(
pdev->dev.of_node_reused = pdevinfo->of_node_reused;
if (pdevinfo->dma_mask) {
- /*
- * This memory isn't freed when the device is put,
- * I don't have a nice idea for that though. Conceptually
- * dma_mask in struct device should not be a pointer.
- * See http://thread.gmane.org/gmane.linux.kernel.pci/9081
- */
- pdev->dev.dma_mask =
- kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
- if (!pdev->dev.dma_mask)
- goto err;
-
- kmemleak_ignore(pdev->dev.dma_mask);
-
*pdev->dev.dma_mask = pdevinfo->dma_mask;
pdev->dev.coherent_dma_mask = pdevinfo->dma_mask;
}
_______________________________________________
iommu mailing list
[email protected]
https://lists.linuxfoundation.org/mailman/listinfo/iommu
