From 2228511833e267e833514cc85ba9626f9dacd661 Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Tue, 13 Sep 2011 16:17:00 -0500 Subject: [PATCH] powerpc/fsl_msi: fix support for multiple MSI ranges Commit 6820fead ("powerpc/fsl_msi: Handle msi-available-ranges better") added support for multiple ranges in the msi-available-ranges property, but it miscalculated the MSIR index when multiple ranges are used. Signed-off-by: Timur Tabi Acked-by: Scott Wood Signed-off-by: Kumar Gala --- arch/powerpc/sysdev/fsl_msi.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c index 419a77239bd..1cca25146b1 100644 --- a/arch/powerpc/sysdev/fsl_msi.c +++ b/arch/powerpc/sysdev/fsl_msi.c @@ -296,7 +296,7 @@ static int __devinit fsl_msi_setup_hwirq(struct fsl_msi *msi, } msi->msi_virqs[irq_index] = virt_msir; - cascade_data->index = offset + irq_index; + cascade_data->index = offset; cascade_data->msi_data = msi; irq_set_handler_data(virt_msir, cascade_data); irq_set_chained_handler(virt_msir, fsl_msi_cascade); @@ -376,8 +376,10 @@ static int __devinit fsl_of_msi_probe(struct platform_device *dev) goto error_out; } - if (!p) + if (!p) { p = all_avail; + len = sizeof(all_avail); + } for (irq_index = 0, i = 0; i < len / (2 * sizeof(u32)); i++) { if (p[i * 2] % IRQS_PER_MSI_REG || @@ -393,7 +395,7 @@ static int __devinit fsl_of_msi_probe(struct platform_device *dev) count = p[i * 2 + 1] / IRQS_PER_MSI_REG; for (j = 0; j < count; j++, irq_index++) { - err = fsl_msi_setup_hwirq(msi, dev, offset, irq_index); + err = fsl_msi_setup_hwirq(msi, dev, offset + j, irq_index); if (err) goto error_out; } -- 2.39.5