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alistair23-linux
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cxl: Make IRQ release idempotent 

Check if an IRQ is mapped before releasing it.

This will simplify future EEH code by allowing unconditional unmapping
of IRQs.

Acked-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
hifive-unleashed-5.1
Daniel Axtens 2015-08-14 17:41:20 +10:00 committed by Michael Ellerman
parent 05155772f6
commit e640d2fc81
1 changed files with 9 additions and 0 deletions
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9
drivers/misc/cxl/irq.c
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@ -341,6 +341,9 @@ int cxl_register_psl_err_irq(struct cxl *adapter)
void cxl_release_psl_err_irq(struct cxl *adapter)
{
if (adapter->err_virq != irq_find_mapping(NULL, adapter->err_hwirq))
return;
cxl_p1_write(adapter, CXL_PSL_ErrIVTE, 0x0000000000000000);
cxl_unmap_irq(adapter->err_virq, adapter);
cxl_release_one_irq(adapter, adapter->err_hwirq);
@ -374,6 +377,9 @@ int cxl_register_serr_irq(struct cxl_afu *afu)
void cxl_release_serr_irq(struct cxl_afu *afu)
{
if (afu->serr_virq != irq_find_mapping(NULL, afu->serr_hwirq))
return;
cxl_p1n_write(afu, CXL_PSL_SERR_An, 0x0000000000000000);
cxl_unmap_irq(afu->serr_virq, afu);
cxl_release_one_irq(afu->adapter, afu->serr_hwirq);
@ -400,6 +406,9 @@ int cxl_register_psl_irq(struct cxl_afu *afu)
void cxl_release_psl_irq(struct cxl_afu *afu)
{
if (afu->psl_virq != irq_find_mapping(NULL, afu->psl_hwirq))
return;
cxl_unmap_irq(afu->psl_virq, afu);
cxl_release_one_irq(afu->adapter, afu->psl_hwirq);
kfree(afu->psl_irq_name);