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xen/events: fix error code in xen_bind_pirq_msi_to_irq()

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commit 7f3da4b698bcc21a6df0e7f114af71d53a3e26ac upstream.

Return -ENOMEM if xen_irq_init() fails.  currently the code returns an
uninitialized variable or zero.

Fixes: 5dd9ad32d775 ("xen/events: drop xen_allocate_irqs_dynamic()")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Juergen Gross <jgross@ssue.com>
Link: https://lore.kernel.org/r/3b9ab040-a92e-4e35-b687-3a95890a9ace@moroto.mountain
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2023-11-28 09:52:41 +03:00 • committed by Greg Kroah-Hartman
parent 658750e3d8
commit 980278aca1
1 changed files with 3 additions and 1 deletions
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4
drivers/xen/events/events_base.c
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@ -1099,8 +1099,10 @@ int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc,
for (i = 0; i < nvec; i++) {
info = xen_irq_init(irq + i);
if (!info)
if (!info) {
ret = -ENOMEM;
goto error_irq;
}
irq_set_chip_and_handler_name(irq + i, &xen_pirq_chip, handle_edge_irq, name);