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Subject[PATCH 05/12] PCI/switchtec: Move check event id from mask_event() to switchtec_event_isr()
From: Wesley Sheng <wesley.sheng@microchip.com>

Event id check doesn't depend on anything in the mask_all_events()
to mask_event() path, doing it in switchtec_event_isr() would
avoid the CSR read in mask_event().

Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
drivers/pci/switch/switchtec.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 231499da2899..05d4cb49219b 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -1180,10 +1180,6 @@ static int mask_event(struct switchtec_dev *stdev, int eid, int idx)
if (!(hdr & SWITCHTEC_EVENT_OCCURRED && hdr & SWITCHTEC_EVENT_EN_IRQ))
return 0;

- if (eid == SWITCHTEC_IOCTL_EVENT_LINK_STATE ||
- eid == SWITCHTEC_IOCTL_EVENT_MRPC_COMP)
- return 0;
-
dev_dbg(&stdev->dev, "%s: %d %d %x\n", __func__, eid, idx, hdr);
hdr &= ~(SWITCHTEC_EVENT_EN_IRQ | SWITCHTEC_EVENT_OCCURRED);
iowrite32(hdr, hdr_reg);
@@ -1230,8 +1226,13 @@ static irqreturn_t switchtec_event_isr(int irq, void *dev)

check_link_state_events(stdev);

- for (eid = 0; eid < SWITCHTEC_IOCTL_MAX_EVENTS; eid++)
+ for (eid = 0; eid < SWITCHTEC_IOCTL_MAX_EVENTS; eid++) {
+ if (eid == SWITCHTEC_IOCTL_EVENT_LINK_STATE ||
+ eid == SWITCHTEC_IOCTL_EVENT_MRPC_COMP)
+ continue;
+
event_count += mask_all_events(stdev, eid);
+ }

if (event_count) {
atomic_inc(&stdev->event_cnt);
--
2.20.1
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