diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2021-12-10 23:19:34 +0100 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2021-12-16 22:16:41 +0100 |
commit | d86a6d47bcc6b41fe2a4e13313d66a772d00382f (patch) | |
tree | 8b6ac70688868b6c5eade29b4f708ae5a4aa6554 /drivers/bus/fsl-mc | |
parent | d722e9a51178d42b07555a9420d286dad3341d61 (diff) | |
download | linux-d86a6d47bcc6b41fe2a4e13313d66a772d00382f.tar.bz2 |
bus: fsl-mc: fsl-mc-allocator: Rework MSI handling
Storing a pointer to the MSI descriptor just to track the Linux interrupt
number is daft. Just store the interrupt number and be done with it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221815.207838579@linutronix.de
Diffstat (limited to 'drivers/bus/fsl-mc')
-rw-r--r-- | drivers/bus/fsl-mc/dprc-driver.c | 8 | ||||
-rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-allocator.c | 9 | ||||
-rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-msi.c | 6 |
3 files changed, 9 insertions, 14 deletions
diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c index 315e830b6ecd..5e70f9775a0e 100644 --- a/drivers/bus/fsl-mc/dprc-driver.c +++ b/drivers/bus/fsl-mc/dprc-driver.c @@ -400,7 +400,7 @@ static irqreturn_t dprc_irq0_handler_thread(int irq_num, void *arg) struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev); struct fsl_mc_io *mc_io = mc_dev->mc_io; - struct msi_desc *msi_desc = mc_dev->irqs[0]->msi_desc; + int irq = mc_dev->irqs[0]->virq; dev_dbg(dev, "DPRC IRQ %d triggered on CPU %u\n", irq_num, smp_processor_id()); @@ -409,7 +409,7 @@ static irqreturn_t dprc_irq0_handler_thread(int irq_num, void *arg) return IRQ_HANDLED; mutex_lock(&mc_bus->scan_mutex); - if (!msi_desc || msi_desc->irq != (u32)irq_num) + if (irq != (u32)irq_num) goto out; status = 0; @@ -521,7 +521,7 @@ static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev) * function that programs the MSI physically in the device */ error = devm_request_threaded_irq(&mc_dev->dev, - irq->msi_desc->irq, + irq->virq, dprc_irq0_handler, dprc_irq0_handler_thread, IRQF_NO_SUSPEND | IRQF_ONESHOT, @@ -771,7 +771,7 @@ static void dprc_teardown_irq(struct fsl_mc_device *mc_dev) (void)disable_dprc_irq(mc_dev); - devm_free_irq(&mc_dev->dev, irq->msi_desc->irq, &mc_dev->dev); + devm_free_irq(&mc_dev->dev, irq->virq, &mc_dev->dev); fsl_mc_free_irqs(mc_dev); } diff --git a/drivers/bus/fsl-mc/fsl-mc-allocator.c b/drivers/bus/fsl-mc/fsl-mc-allocator.c index 3370b63bad5f..dced427ca8ba 100644 --- a/drivers/bus/fsl-mc/fsl-mc-allocator.c +++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c @@ -350,7 +350,6 @@ int fsl_mc_populate_irq_pool(struct fsl_mc_device *mc_bus_dev, unsigned int irq_count) { unsigned int i; - struct msi_desc *msi_desc; struct fsl_mc_device_irq *irq_resources; struct fsl_mc_device_irq *mc_dev_irq; int error; @@ -388,16 +387,12 @@ int fsl_mc_populate_irq_pool(struct fsl_mc_device *mc_bus_dev, mc_dev_irq->resource.type = res_pool->type; mc_dev_irq->resource.data = mc_dev_irq; mc_dev_irq->resource.parent_pool = res_pool; + mc_dev_irq->virq = msi_get_virq(&mc_bus_dev->dev, i); + mc_dev_irq->resource.id = mc_dev_irq->virq; INIT_LIST_HEAD(&mc_dev_irq->resource.node); list_add_tail(&mc_dev_irq->resource.node, &res_pool->free_list); } - for_each_msi_entry(msi_desc, &mc_bus_dev->dev) { - mc_dev_irq = &irq_resources[msi_desc->msi_index]; - mc_dev_irq->msi_desc = msi_desc; - mc_dev_irq->resource.id = msi_desc->irq; - } - res_pool->max_count = irq_count; res_pool->free_count = irq_count; mc_bus->irq_resources = irq_resources; diff --git a/drivers/bus/fsl-mc/fsl-mc-msi.c b/drivers/bus/fsl-mc/fsl-mc-msi.c index 2ffb70550a39..4823947d7d6f 100644 --- a/drivers/bus/fsl-mc/fsl-mc-msi.c +++ b/drivers/bus/fsl-mc/fsl-mc-msi.c @@ -58,11 +58,11 @@ static void fsl_mc_msi_update_dom_ops(struct msi_domain_info *info) } static void __fsl_mc_msi_write_msg(struct fsl_mc_device *mc_bus_dev, - struct fsl_mc_device_irq *mc_dev_irq) + struct fsl_mc_device_irq *mc_dev_irq, + struct msi_desc *msi_desc) { int error; struct fsl_mc_device *owner_mc_dev = mc_dev_irq->mc_dev; - struct msi_desc *msi_desc = mc_dev_irq->msi_desc; struct dprc_irq_cfg irq_cfg; /* @@ -129,7 +129,7 @@ static void fsl_mc_msi_write_msg(struct irq_data *irq_data, /* * Program the MSI (paddr, value) pair in the device: */ - __fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq); + __fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq, msi_desc); } static void fsl_mc_msi_update_chip_ops(struct msi_domain_info *info) |