powerpc/cell/axon-msi: Fix MSI after kexec

[linux-2.6-omap-h63xx.git] / arch / powerpc / platforms / cell / axon_msi.c

diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c
index 442cf36aa172920b355710e65a68624d43293d33..0ce45c2b42f8eb67a1ea5156fcf476bdb3f3924a 100644 (file)
--- a/arch/powerpc/platforms/cell/axon_msi.c
+++ b/arch/powerpc/platforms/cell/axon_msi.c
@@ -413,6 +413,9 @@ static int axon_msi_probe(struct of_device *device,
                        MSIC_CTRL_IRQ_ENABLE | MSIC_CTRL_ENABLE |
                        MSIC_CTRL_FIFO_SIZE);
 
+       msic->read_offset = dcr_read(msic->dcr_host, MSIC_WRITE_OFFSET_REG)
+                               & MSIC_FIFO_SIZE_MASK;
+
        device->dev.platform_data = msic;
 
        ppc_md.setup_msi_irqs = axon_msi_setup_msi_irqs;