diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-12-06 23:51:34 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-12-16 22:22:19 +0100 |
| commit | 68e3183580bea59e764d33283875e5f0adc753f3 (patch) | |
| tree | 9c7bf69cb0e24778f2e93ea9a9ca740829c7d1a6 /drivers/ntb | |
| parent | PCI: hv: Rework MSI handling (diff) | |
| download | linux-dev-68e3183580bea59e764d33283875e5f0adc753f3.tar.xz linux-dev-68e3183580bea59e764d33283875e5f0adc753f3.zip | |
NTB/msi: Convert to msi_on_each_desc()
Replace the about to vanish iterators, make use of the filtering and take
the descriptor lock around the iteration.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.683004012@linutronix.de
Diffstat (limited to 'drivers/ntb')
| -rw-r--r-- | drivers/ntb/msi.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/ntb/msi.c b/drivers/ntb/msi.c index 3f05cfbc73af..2818bfcf4031 100644 --- a/drivers/ntb/msi.c +++ b/drivers/ntb/msi.c @@ -108,8 +108,10 @@ int ntb_msi_setup_mws(struct ntb_dev *ntb) if (!ntb->msi) return -EINVAL; - desc = first_msi_entry(&ntb->pdev->dev); + msi_lock_descs(&ntb->pdev->dev); + desc = msi_first_desc(&ntb->pdev->dev, MSI_DESC_ASSOCIATED); addr = desc->msg.address_lo + ((uint64_t)desc->msg.address_hi << 32); + msi_unlock_descs(&ntb->pdev->dev); for (peer = 0; peer < ntb_peer_port_count(ntb); peer++) { peer_widx = ntb_peer_highest_mw_idx(ntb, peer); @@ -281,13 +283,15 @@ int ntbm_msi_request_threaded_irq(struct ntb_dev *ntb, irq_handler_t handler, const char *name, void *dev_id, struct ntb_msi_desc *msi_desc) { + struct device *dev = &ntb->pdev->dev; struct msi_desc *entry; int ret; if (!ntb->msi) return -EINVAL; - for_each_pci_msi_entry(entry, ntb->pdev) { + msi_lock_descs(dev); + msi_for_each_desc(entry, dev, MSI_DESC_ASSOCIATED) { if (irq_has_action(entry->irq)) continue; @@ -304,14 +308,17 @@ int ntbm_msi_request_threaded_irq(struct ntb_dev *ntb, irq_handler_t handler, ret = ntbm_msi_setup_callback(ntb, entry, msi_desc); if (ret) { devm_free_irq(&ntb->dev, entry->irq, dev_id); - return ret; + goto unlock; } - - return entry->irq; + ret = entry->irq; + goto unlock; } + ret = -ENODEV; - return -ENODEV; +unlock: + msi_unlock_descs(dev); + return ret; } EXPORT_SYMBOL(ntbm_msi_request_threaded_irq); |