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powerpc/fsl_msi: fix support for multiple MSI ranges

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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 <timur@freescale.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Timur Tabi 2011-09-13 16:17:00 -05:00 committed by Kumar Gala
parent 2a05e333c2
commit 2228511833
1 changed files with 5 additions and 3 deletions
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8
arch/powerpc/sysdev/fsl_msi.c
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@ -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;
}