Get_cached_msi_msg() only be called in two places,
ia64_set_msi_irq_affinity() and sn_set_msi_irq_affinity().
The code flow is:
irq = irq_data->irq
get_cached_msi_msg(irq)
irq_get_msi_desc(irq)
irq_get_irq_data(irq)
msi_desc = irq_data->desc
__get_cached_msi_msg(msi_desc, msg)
This is crazy, we should use __get_cached_msi_msg(irq_data->desc, msg)
directly to simplify the flow, and remove get_cached_msi_msg().
Finally, rename __get_cached_msi_msg() to get_cached_msi_msg().
Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
CC: Tony Luck <tony.luck@xxxxxxxxx>
CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CC: x86@xxxxxxxxxx
CC: linux-ia64@xxxxxxxxxxxxxxx
---
arch/ia64/kernel/msi_ia64.c | 2 +-
arch/ia64/sn/kernel/msi_sn.c | 4 ++--
arch/x86/kernel/apic/io_apic.c | 2 +-
drivers/pci/msi.c | 9 +--------
include/linux/msi.h | 3 +--
5 files changed, 6 insertions(+), 14 deletions(-)
diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c
index c430f91..4efe748 100644
--- a/arch/ia64/kernel/msi_ia64.c
+++ b/arch/ia64/kernel/msi_ia64.c
@@ -23,7 +23,7 @@ static int ia64_set_msi_irq_affinity(struct irq_data *idata,
if (irq_prepare_move(irq, cpu))
return -1;
- get_cached_msi_msg(irq, &msg);
+ get_cached_msi_msg(idata->msi_desc, &msg);
addr = msg.address_lo;
addr &= MSI_ADDR_DEST_ID_MASK;
diff --git a/arch/ia64/sn/kernel/msi_sn.c b/arch/ia64/sn/kernel/msi_sn.c
index afc58d2..8bec242 100644
--- a/arch/ia64/sn/kernel/msi_sn.c
+++ b/arch/ia64/sn/kernel/msi_sn.c
@@ -175,8 +175,8 @@ static int sn_set_msi_irq_affinity(struct irq_data *data,
* Release XIO resources for the old MSI PCI address
*/
- get_cached_msi_msg(irq, &msg);
- sn_pdev = (struct pcidev_info *)sn_irq_info->irq_pciioinfo;
+ get_cached_msi_msg(data->msi_desc, &msg);
+ sn_pdev = (struct pcidev_info *)sn_irq_info->irq_pciioinfo;
pdev = sn_pdev->pdi_linux_pcidev;
provider = SN_PCIDEV_BUSPROVIDER(pdev);
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 29290f5..e877cfb 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3145,7 +3145,7 @@ msi_set_affinity(struct irq_data *data, const struct cpumask *mask, bool force)
if (ret)
return ret;
- __get_cached_msi_msg(data->msi_desc, &msg);
+ get_cached_msi_msg(data->msi_desc, &msg);
msg.data &= ~MSI_DATA_VECTOR_MASK;
msg.data |= MSI_DATA_VECTOR(cfg->vector);
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 0d0f163..8746ecd 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -296,7 +296,7 @@ void read_msi_msg(unsigned int irq, struct msi_msg *msg)
__read_msi_msg(entry, msg);
}
-void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
+void get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
{
/* Assert that the cache is valid, assuming that
* valid messages are not all-zeroes. */
@@ -306,13 +306,6 @@ void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
*msg = entry->msg;
}
-void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg)
-{
- struct msi_desc *entry = irq_get_msi_desc(irq);
-
- __get_cached_msi_msg(entry, msg);
-}
-
void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
{
if (entry->dev->current_state != PCI_D0) {
diff --git a/include/linux/msi.h b/include/linux/msi.h
index fff7201..329ec73 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -16,10 +16,9 @@ struct msi_desc;
void mask_msi_irq(struct irq_data *data);
void unmask_msi_irq(struct irq_data *data);
void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
-void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
+void get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
void read_msi_msg(unsigned int irq, struct msi_msg *msg);
-void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg);
void write_msi_msg(unsigned int irq, struct msi_msg *msg);
struct msi_desc {
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
