On Tuesday 30 December 2014 13:28:32 Rob Herring wrote:
> From: Rob Herring <[email protected]>
>
> Disable the Versatile PCI DT node when no PCI backplane is detected. This
> will prevent the Versatile PCI driver from probing when PCI is not
> populated.
Can you explain why the check is done in platform code instead of the PCI
driver probe function itself?
> + /* Check if PCI backplane is detected */
> + val = __raw_readl(base + VERSATILE_SYS_PCICTL_OFFSET);
> + if (val & 1)
> + goto err;
Using __raw_readl prevents this from working with big-endian kernels, so just
use readl here.
Arnd
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