Hi Julien,
Julien Grall writes:
> From: Julien Grall <jgr...@amazon.com>
>
> init_one_desc_irq() can return an error if it is unable to allocate
> memory. While this is unlikely to happen during boot (called from
> init_{,local_}irq_data()), it is better to harden the code by
> propagting the return value.
>
> Spotted by coverity.
>
> CID: 106529
>
> Signed-off-by: Julien Grall <jgr...@amazon.com>
> Reviewed-by: Roger Paul Monné <roger....@citrix.com>
Reviewed-by: Volodymyr Babchuk <volodymyr_babc...@epam.com>
For ARM part, obviously.
>
> ---
> Changes in v2:
> - Add Roger's reviewed-by for x86
> - Handle
> ---
> xen/arch/arm/irq.c | 12 ++++++++++--
> xen/arch/x86/irq.c | 7 ++++++-
> 2 files changed, 16 insertions(+), 3 deletions(-)
>
> diff --git a/xen/arch/arm/irq.c b/xen/arch/arm/irq.c
> index 3877657a5277..b71b099e6fa2 100644
> --- a/xen/arch/arm/irq.c
> +++ b/xen/arch/arm/irq.c
> @@ -88,7 +88,11 @@ static int __init init_irq_data(void)
> for ( irq = NR_LOCAL_IRQS; irq < NR_IRQS; irq++ )
> {
> struct irq_desc *desc = irq_to_desc(irq);
> - init_one_irq_desc(desc);
> + int rc = init_one_irq_desc(desc);
> +
> + if ( rc )
> + return rc;
> +
> desc->irq = irq;
> desc->action = NULL;
> }
> @@ -105,7 +109,11 @@ static int init_local_irq_data(void)
> for ( irq = 0; irq < NR_LOCAL_IRQS; irq++ )
> {
> struct irq_desc *desc = irq_to_desc(irq);
> - init_one_irq_desc(desc);
> + int rc = init_one_irq_desc(desc);
> +
> + if ( rc )
> + return rc;
> +
> desc->irq = irq;
> desc->action = NULL;
>
> diff --git a/xen/arch/x86/irq.c b/xen/arch/x86/irq.c
> index 45966947919e..3ebd684415ac 100644
> --- a/xen/arch/x86/irq.c
> +++ b/xen/arch/x86/irq.c
> @@ -428,9 +428,14 @@ int __init init_irq_data(void)
>
> for ( irq = 0; irq < nr_irqs_gsi; irq++ )
> {
> + int rc;
> +
> desc = irq_to_desc(irq);
> desc->irq = irq;
> - init_one_irq_desc(desc);
> +
> + rc = init_one_irq_desc(desc);
> + if ( rc )
> + return rc;
> }
> for ( ; irq < nr_irqs; irq++ )
> irq_to_desc(irq)->irq = irq;
--
Volodymyr Babchuk at EPAM
