2022-09-07 15:26:09

by Joerg Roedel

[permalink] [raw]
Subject: [PATCH] iommu/virtio: Fix compile error with viommu_capable()

From: Joerg Roedel <[email protected]>

A recent fix introduced viommu_capable() but other changes
from Robin change the function signature of the call-back it
is used for.

When both changes are merged a compile error will happen
because the function pointer types mismatch. Fix that by
updating the viommu_capable() signature after the merge.

Cc: Jean-Philippe Brucker <[email protected]>
Cc: Robin Murphy <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>
---
drivers/iommu/virtio-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index da463db9f12a..1b12825e2df1 100644
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -1005,7 +1005,7 @@ static int viommu_of_xlate(struct device *dev, struct of_phandle_args *args)
return iommu_fwspec_add_ids(dev, args->args, 1);
}

-static bool viommu_capable(enum iommu_cap cap)
+static bool viommu_capable(struct device *dev, enum iommu_cap cap)
{
switch (cap) {
case IOMMU_CAP_CACHE_COHERENCY:
--
2.36.1


2022-09-07 15:39:45

by Jean-Philippe Brucker

[permalink] [raw]
Subject: Re: [PATCH] iommu/virtio: Fix compile error with viommu_capable()

On Wed, Sep 07, 2022 at 05:11:54PM +0200, Joerg Roedel wrote:
> From: Joerg Roedel <[email protected]>
>
> A recent fix introduced viommu_capable() but other changes
> from Robin change the function signature of the call-back it
> is used for.
>
> When both changes are merged a compile error will happen
> because the function pointer types mismatch. Fix that by
> updating the viommu_capable() signature after the merge.
>
> Cc: Jean-Philippe Brucker <[email protected]>
> Cc: Robin Murphy <[email protected]>
> Signed-off-by: Joerg Roedel <[email protected]>

Reviewed-by: Jean-Philippe Brucker <[email protected]>

> ---
> drivers/iommu/virtio-iommu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
> index da463db9f12a..1b12825e2df1 100644
> --- a/drivers/iommu/virtio-iommu.c
> +++ b/drivers/iommu/virtio-iommu.c
> @@ -1005,7 +1005,7 @@ static int viommu_of_xlate(struct device *dev, struct of_phandle_args *args)
> return iommu_fwspec_add_ids(dev, args->args, 1);
> }
>
> -static bool viommu_capable(enum iommu_cap cap)
> +static bool viommu_capable(struct device *dev, enum iommu_cap cap)
> {
> switch (cap) {
> case IOMMU_CAP_CACHE_COHERENCY:
> --
> 2.36.1
>

2022-09-07 16:45:47

by Robin Murphy

[permalink] [raw]
Subject: Re: [PATCH] iommu/virtio: Fix compile error with viommu_capable()

On 2022-09-07 16:11, Joerg Roedel wrote:
> From: Joerg Roedel <[email protected]>
>
> A recent fix introduced viommu_capable() but other changes
> from Robin change the function signature of the call-back it
> is used for.
>
> When both changes are merged a compile error will happen
> because the function pointer types mismatch. Fix that by
> updating the viommu_capable() signature after the merge.

I thought I'd called out somewhere that this was going to be a conflict,
but apparently not, sorry about that.

Acked-by: Robin Murphy <[email protected]>

Lemme spin a patch for the outstanding LKP warning on the bus series
before that gets annoying too...

> Cc: Jean-Philippe Brucker <[email protected]>
> Cc: Robin Murphy <[email protected]>
> Signed-off-by: Joerg Roedel <[email protected]>
> ---
> drivers/iommu/virtio-iommu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
> index da463db9f12a..1b12825e2df1 100644
> --- a/drivers/iommu/virtio-iommu.c
> +++ b/drivers/iommu/virtio-iommu.c
> @@ -1005,7 +1005,7 @@ static int viommu_of_xlate(struct device *dev, struct of_phandle_args *args)
> return iommu_fwspec_add_ids(dev, args->args, 1);
> }
>
> -static bool viommu_capable(enum iommu_cap cap)
> +static bool viommu_capable(struct device *dev, enum iommu_cap cap)
> {
> switch (cap) {
> case IOMMU_CAP_CACHE_COHERENCY: