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pci: Cleanup the irq_desc mess in msi

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Handing down irq_desc to msi just so that msi can access
irq_desc.irq_data.msi_desc is a pretty stupid idea. The calling code
can hand down a pointer to msi_desc so msi code does not need to know
about the irq descriptor at all.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Thomas Gleixner
2010-09-28 19:09:51 +02:00
parent 1c9db52534
commit 39431acb1a
3 changed files with 15 additions and 21 deletions
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24
drivers/pci/msi.c
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@@ -193,10 +193,8 @@ void unmask_msi_irq(struct irq_data *data)
msi_set_mask_bit(data, 0);
}
void read_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg)
void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
{
struct msi_desc *entry = get_irq_desc_msi(desc);
BUG_ON(entry->dev->current_state != PCI_D0);
if (entry->msi_attrib.is_msix) {
@@ -227,15 +225,13 @@ void read_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg)
void read_msi_msg(unsigned int irq, struct msi_msg *msg)
{
struct irq_desc *desc = irq_to_desc(irq);
struct msi_desc *entry = get_irq_msi(irq);
read_msi_msg_desc(desc, msg);
__read_msi_msg(entry, msg);
}
void get_cached_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg)
void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
{
struct msi_desc *entry = get_irq_desc_msi(desc);
/* Assert that the cache is valid, assuming that
* valid messages are not all-zeroes. */
BUG_ON(!(entry->msg.address_hi | entry->msg.address_lo |
@@ -246,15 +242,13 @@ void get_cached_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg)
void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg)
{
struct irq_desc *desc = irq_to_desc(irq);
struct msi_desc *entry = get_irq_msi(irq);
get_cached_msi_msg_desc(desc, msg);
__get_cached_msi_msg(entry, msg);
}
void write_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg)
void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
{
struct msi_desc *entry = get_irq_desc_msi(desc);
if (entry->dev->current_state != PCI_D0) {
/* Don't touch the hardware now */
} else if (entry->msi_attrib.is_msix) {
@@ -292,9 +286,9 @@ void write_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg)
void write_msi_msg(unsigned int irq, struct msi_msg *msg)
{
struct irq_desc *desc = irq_to_desc(irq);
struct msi_desc *entry = get_irq_msi(irq);
write_msi_msg_desc(desc, msg);
__write_msi_msg(entry, msg);
}
static void free_msi_irqs(struct pci_dev *dev)