i915: make inject_virtual_interrupt() void

From Christian Brauner
e642622550c88c77c2134409351c237c59f9191e in linux-6.6.y/6.6.33
85884871921000b9bca2184077b1159771e50047 in mainline linux

diff --git a/sys/dev/pci/drm/i915/gvt/interrupt.c b/sys/dev/pci/drm/i915/gvt/interrupt.c
index 68eca02..8030147 100644 (file)
--- a/sys/dev/pci/drm/i915/gvt/interrupt.c
+++ b/sys/dev/pci/drm/i915/gvt/interrupt.c
@@ -405,7 +405,7 @@ static void init_irq_map(struct intel_gvt_irq *irq)
 #define MSI_CAP_DATA(offset) (offset + 8)
 #define MSI_CAP_EN 0x1
 
-static int inject_virtual_interrupt(struct intel_vgpu *vgpu)
+static void inject_virtual_interrupt(struct intel_vgpu *vgpu)
 {
        unsigned long offset = vgpu->gvt->device_info.msi_cap_offset;
        u16 control, data;
@@ -417,10 +417,10 @@ static int inject_virtual_interrupt(struct intel_vgpu *vgpu)
 
        /* Do not generate MSI if MSIEN is disabled */
        if (!(control & MSI_CAP_EN))
-               return 0;
+               return;
 
        if (WARN(control & GENMASK(15, 1), "only support one MSI format\n"))
-               return -EINVAL;
+               return;
 
        trace_inject_msi(vgpu->id, addr, data);
 
@@ -434,10 +434,9 @@ static int inject_virtual_interrupt(struct intel_vgpu *vgpu)
         * returned and don't inject interrupt into guest.
         */
        if (!test_bit(INTEL_VGPU_STATUS_ATTACHED, vgpu->status))
-               return -ESRCH;
-       if (vgpu->msi_trigger && eventfd_signal(vgpu->msi_trigger, 1) != 1)
-               return -EFAULT;
-       return 0;
+               return;
+       if (vgpu->msi_trigger)
+               eventfd_signal(vgpu->msi_trigger, 1);
 }
 
 static void propagate_event(struct intel_gvt_irq *irq,