[PATCH] of: restricted dma: Don't fail device probe on rmem init failure

[Will Deacon]

On Fri, Aug 06, 2021 at 12:31:05PM +0100, Will Deacon wrote:
> If CONFIG_DMA_RESTRICTED_POOL=n then probing a device with a reference
> to a "restricted-dma-pool" will fail with a reasonably cryptic error:
> 
>   | pci-host-generic: probe of 10000.pci failed with error -22
> 
> Print a more helpful message in this case and try to continue probing
> the device as we do if the kernel doesn't have the restricted DMA patches
> applied or either CONFIG_OF_ADDRESS or CONFIG_HAS_DMA =n.
> 
> Cc: Claire Chang <tientzu at chromium.org>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk at oracle.com>
> Cc: Robin Murphy <robin.murphy at arm.com>
> Cc: Christoph Hellwig <hch at lst.de>
> Cc: Rob Herring <robh+dt at kernel.org>
> Signed-off-by: Will Deacon <will at kernel.org>
> ---
>  drivers/of/address.c    | 8 ++++----
>  drivers/of/device.c     | 2 +-
>  drivers/of/of_private.h | 8 +++-----
>  3 files changed, 8 insertions(+), 10 deletions(-)

Sorry, didn't mean to send this patch a second time, it was still kicking
around in my tree from yesterday and I accidentally picked it up when
sending my TLBI series.

Please ignore.

Will