diff options
| -rw-r--r-- | drivers/pci/host/pci-hyperv.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c index 415dcc69a502..334c9a7b8991 100644 --- a/drivers/pci/host/pci-hyperv.c +++ b/drivers/pci/host/pci-hyperv.c @@ -50,6 +50,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> +#include <linux/delay.h> #include <linux/semaphore.h> #include <linux/irqdomain.h> #include <asm/irqdomain.h> @@ -1159,7 +1160,12 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg) goto free_int_desc; } - wait_for_completion(&comp.comp_pkt.host_event); + /* + * Since this function is called with IRQ locks held, can't + * do normal wait for completion; instead poll. + */ + while (!try_wait_for_completion(&comp.comp_pkt.host_event)) + udelay(100); if (comp.comp_pkt.completion_status < 0) { dev_err(&hbus->hdev->device, |