UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

net: ipa: get rid of some unneeded IPA interrupt code 

The pending IPA interrupts are checked by ipa_isr_thread(), and
interrupts are processed only if an enabled interrupt has a
condition pending.  But ipa_interrupt_process_all() now makes the
same check, so the one in ipa_isr_thread() can just be skipped.

Also in ipa_isr_thread(), any interrupt conditions pending which are
not enabled are cleared.  Here too, ipa_interrupt_process_all() now
clears such excess interrupt conditions, so ipa_isr_thread() doesn't
have to.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alex Elder 2021-07-27 14:46:28 -05:00 committed by David S. Miller
parent e70e410f8e
commit fe6a327979
1 changed files with 1 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/ipa/ipa_interrupt.c
View File

@ -116,26 +116,11 @@ static irqreturn_t ipa_isr_thread(int irq, void *dev_id)
{
struct ipa_interrupt *interrupt = dev_id;
struct ipa *ipa = interrupt->ipa;
u32 offset;
u32 mask;
ipa_clock_get(ipa);
offset = ipa_reg_irq_stts_offset(ipa->version);
mask = ioread32(ipa->reg_virt + offset);
if (mask & interrupt->enabled) {
ipa_interrupt_process_all(interrupt);
goto out_clock_put;
}
ipa_interrupt_process_all(interrupt);
/* Nothing in the mask was supposed to cause an interrupt */
offset = ipa_reg_irq_clr_offset(ipa->version);
iowrite32(mask, ipa->reg_virt + offset);
dev_err(&ipa->pdev->dev, "%s: unexpected interrupt, mask 0x%08x\n",
__func__, mask);
out_clock_put:
ipa_clock_put(ipa);
return IRQ_HANDLED;