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authorBjorn Helgaas <bhelgaas@google.com>2019-07-12 17:08:38 -0500
committerBjorn Helgaas <bhelgaas@google.com>2019-07-12 17:08:38 -0500
commit916f12e494d7ff7c786144ac62807bd37755efb3 (patch)
tree282bd0333c7f704823075fe39e4f2cd20cb369f7
parent6bfc0c07cdb775ff5648df4afbe3ac7ce1c766ab (diff)
parent181fa434d0514e40ebf6e9721f2b72700287b6e2 (diff)
downloadlinux-916f12e494d7ff7c786144ac62807bd37755efb3.tar.bz2
Merge branch 'remotes/lorenzo/pci/xilinx'
- Fix Xilinx NWL multi-MSI vector aliasing issue (Bharat Kumar Gogada) * remotes/lorenzo/pci/xilinx: PCI: xilinx-nwl: Fix Multi MSI data programming
-rw-r--r--drivers/pci/controller/pcie-xilinx-nwl.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/pci/controller/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c
index 3b031f00a94a..45c0f344ccd1 100644
--- a/drivers/pci/controller/pcie-xilinx-nwl.c
+++ b/drivers/pci/controller/pcie-xilinx-nwl.c
@@ -482,15 +482,13 @@ static int nwl_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
int i;
mutex_lock(&msi->lock);
- bit = bitmap_find_next_zero_area(msi->bitmap, INT_PCI_MSI_NR, 0,
- nr_irqs, 0);
- if (bit >= INT_PCI_MSI_NR) {
+ bit = bitmap_find_free_region(msi->bitmap, INT_PCI_MSI_NR,
+ get_count_order(nr_irqs));
+ if (bit < 0) {
mutex_unlock(&msi->lock);
return -ENOSPC;
}
- bitmap_set(msi->bitmap, bit, nr_irqs);
-
for (i = 0; i < nr_irqs; i++) {
irq_domain_set_info(domain, virq + i, bit + i, &nwl_irq_chip,
domain->host_data, handle_simple_irq,
@@ -508,7 +506,8 @@ static void nwl_irq_domain_free(struct irq_domain *domain, unsigned int virq,
struct nwl_msi *msi = &pcie->msi;
mutex_lock(&msi->lock);
- bitmap_clear(msi->bitmap, data->hwirq, nr_irqs);
+ bitmap_release_region(msi->bitmap, data->hwirq,
+ get_count_order(nr_irqs));
mutex_unlock(&msi->lock);
}