Commit 7aca462b authored by Esben Haabendal's avatar Esben Haabendal Committed by Greg Kroah-Hartman
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uio_pdrv_genirq: Allow use with non-page-aligned memory resources 



Similar to the changes made in 270579d9 ("uio_mf624: Align memory
regions to page size and set correct offsets"), this will allow
uio_pdrv_genirq devices to expose memory regions that is not page-aligned,
requiring the users to respect the offset sysfs attribute (as implemented
in libuio).

Signed-off-by: default avatarEsben Haabendal <esben@geanix.com>
Link: https://lore.kernel.org/r/20200701145659.3978-4-esben@geanix.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 52f944ee

drivers/uio/uio_pdrv_genirq.c

+4 −2
Original line number Diff line number Diff line
@@ -187,8 +187,10 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev) 
		}



		uiomem->memtype = UIO_MEM_PHYS;

		uiomem->addr = r->start;

		uiomem->size = resource_size(r);

		uiomem->addr = r->start & PAGE_MASK;

		uiomem->offs = r->start & ~PAGE_MASK;

		uiomem->size = (uiomem->offs + resource_size(r)

				+ PAGE_SIZE - 1) & PAGE_MASK;

		uiomem->name = r->name;

		++uiomem;

	}