* [PATCH] at91: ohci: fixed broken sanity check
@ 2013-12-31 16:33 jjhiblot at traphandler.com
2013-12-31 17:25 ` boris brezillon
0 siblings, 1 reply; 2+ messages in thread
From: jjhiblot at traphandler.com @ 2013-12-31 16:33 UTC (permalink / raw)
To: linux-arm-kernel
From: jean-jacques hiblot <jean-jacques.hiblot@jdsu•com>
The test (pdev->resource[1].flags != IORESOURCE_IRQ) is broken because the flags
value may contain not only the information IORESSOURCE_IRQ but also the IRQ type
(IORESOURCE_IRQ_HIGHLEVEL for example).
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@traphandler•com>
---
drivers/usb/host/ohci-at91.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 418444e..df9c8a4 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -142,8 +142,8 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
return -ENODEV;
}
- if ((pdev->resource[0].flags != IORESOURCE_MEM)
- || (pdev->resource[1].flags != IORESOURCE_IRQ)) {
+ if (!(pdev->resource[0].flags & IORESOURCE_MEM)
+ || !(pdev->resource[1].flags & IORESOURCE_IRQ)) {
pr_debug("hcd probe: invalid resource type\n");
return -ENODEV;
}
--
1.8.4.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] at91: ohci: fixed broken sanity check
2013-12-31 16:33 [PATCH] at91: ohci: fixed broken sanity check jjhiblot at traphandler.com
@ 2013-12-31 17:25 ` boris brezillon
0 siblings, 0 replies; 2+ messages in thread
From: boris brezillon @ 2013-12-31 17:25 UTC (permalink / raw)
To: linux-arm-kernel
Hello Jean-Jacques,
On 31/12/2013 17:33, jjhiblot at traphandler.com wrote:
> From: jean-jacques hiblot <jean-jacques.hiblot@jdsu•com>
>
> The test (pdev->resource[1].flags != IORESOURCE_IRQ) is broken because the flags
> value may contain not only the information IORESSOURCE_IRQ but also the IRQ type
> (IORESOURCE_IRQ_HIGHLEVEL for example).
>
This is already fixed: we moved to platform_get_irq and
platform_get_ressource instead of directly accessing platform
resource table.
See http://lists.openwall.net/linux-kernel/2013/12/08/128.
This solves both the problem you're reporting and another problem when
resources are in a different order (nothing guarantees the resources
order when using DT).
Best Regards,
Boris
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@traphandler•com>
> ---
> drivers/usb/host/ohci-at91.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
> index 418444e..df9c8a4 100644
> --- a/drivers/usb/host/ohci-at91.c
> +++ b/drivers/usb/host/ohci-at91.c
> @@ -142,8 +142,8 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
> return -ENODEV;
> }
>
> - if ((pdev->resource[0].flags != IORESOURCE_MEM)
> - || (pdev->resource[1].flags != IORESOURCE_IRQ)) {
> + if (!(pdev->resource[0].flags & IORESOURCE_MEM)
> + || !(pdev->resource[1].flags & IORESOURCE_IRQ)) {
> pr_debug("hcd probe: invalid resource type\n");
> return -ENODEV;
> }
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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