On Wed, Dec 08 2021 at 20:47, Jason Gunthorpe wrote:
> On Mon, Dec 06, 2021 at 11:51:05PM +0100, Thomas Gleixner wrote:
>> +++ b/kernel/irq/msi.c
>> @@ -127,12 +127,37 @@ int msi_setup_device_data(struct device
>> return -ENOMEM;
>>
>> INIT_LIST_HEAD(>list);
>> +
On Mon, Dec 06, 2021 at 11:51:05PM +0100, Thomas Gleixner wrote:
> +++ b/kernel/irq/msi.c
> @@ -127,12 +127,37 @@ int msi_setup_device_data(struct device
> return -ENOMEM;
>
> INIT_LIST_HEAD(>list);
> + mutex_init(>mutex);
> dev->msi.data = md;
>
For upcoming runtime extensions of MSI-X interrupts it's required to
protect the MSI descriptor list. Add a mutex to struct msi_device_data and
provide lock/unlock functions.
Signed-off-by: Thomas Gleixner
---
include/linux/msi.h |5 +
kernel/irq/msi.c| 25
