[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH] xen/events: fix error codes in xen_bind_pirq_msi_to_irq()
On Mon, Nov 27, 2023 at 02:17:05PM +0100, Juergen Gross wrote: > On 27.11.23 13:57, Dan Carpenter wrote: > > The error code needs to be set on these error paths. > > > > Fixes: 5dd9ad32d775 ("xen/events: drop xen_allocate_irqs_dynamic()") > > Fixes: d2ba3166f23b ("xen/events: move drivers/xen/events.c into > > drivers/xen/events/") > > Please drop the last Fixes: tag. Said patch didn't introduce any new problem. Yup. > > > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > > --- > > Are we going to backport these to stable? Should I split this into two > > patches? > > > > drivers/xen/events/events_base.c | 8 ++++++-- > > 1 file changed, 6 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/xen/events/events_base.c > > b/drivers/xen/events/events_base.c > > index f5edb9e27e3c..aae62603b461 100644 > > --- a/drivers/xen/events/events_base.c > > +++ b/drivers/xen/events/events_base.c > > @@ -1105,13 +1105,17 @@ int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, > > struct msi_desc *msidesc, > > mutex_lock(&irq_mapping_update_lock); > > irq = irq_alloc_descs(-1, 0, nvec, -1); > > - if (irq < 0) > > + if (irq < 0) { > > + ret = irq; > > goto out; > > + } > > Why? The return value for the out: label is in irq. > This patch is full of embarrassment. I misread this code. I thought the out label was in the error handling block. > > for (i = 0; i < nvec; i++) { > > info = xen_irq_init(irq + i); > > - if (!info) > > + if (!info) { > > + ret = -ENOMEM; > > goto error_irq; > > + } > > It would be easier to just preset ret with -ENOMEM when defining it. > That only works if it fails on the first iteration. I'll fix this up and resend. regards, dan carpenter
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