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Commit e640d2fc authored by Daniel Axtens's avatar Daniel Axtens Committed by Michael Ellerman
Browse files

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: default avatarCyril Bur <cyrilbur@gmail.com>
Signed-off-by: default avatarDaniel Axtens <dja@axtens.net>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 05155772

drivers/misc/cxl/irq.c

+9 −0
Original line number Diff line number Diff line
@@ -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);