On Fri, Apr 24, 2015 at 10:05:09AM +0100, Zhichang Yuan wrote:
> In the patch whose commit id is 41f8bba7f5552d0, function pci_pio_to_address
> was modified to retieve the corresponding I/O port by CPU physical address.
> But the convertion processing is not correct. It will return a wrong I/O port.
> This patch will fix it.
>
> Fixes: 41f8bba7f555 ("of/pci: Add pci_register_io_range() and pci_pio_to_address()")
> CC: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Zhichang Yuan <yuanzhichang@xxxxxxxxxxxxx>
Acked-by: Liviu Dudau <Liviu.Dudau@xxxxxxx>
> ---
> changes since V1:
> Improved commit message.
>
> drivers/of/address.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/of/address.c b/drivers/of/address.c
> index 78a7dcb..6906a3f 100644
> --- a/drivers/of/address.c
> +++ b/drivers/of/address.c
> @@ -765,7 +765,7 @@ unsigned long __weak pci_address_to_pio(phys_addr_t address)
> spin_lock(&io_range_lock);
> list_for_each_entry(res, &io_range_list, list) {
> if (address >= res->start && address < res->start + res->size) {
> - addr = res->start - address + offset;
> + addr = address - res->start + offset;
> break;
> }
> offset += res->size;
> --
> 1.9.1
>
--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
¯\_(ツ)_/¯
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