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Commit 053be485 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

irqchip/gic-v3-its: Split property table clearing from allocation 



As we're going to reuse some pre-allocated memory for the property
table, split out the zeroing of that table into a separate function
for later use.

Tested-by: default avatarJeremy Linton <jeremy.linton@arm.com>
Tested-by: default avatarBhupesh Sharma <bhsharma@redhat.com>
Tested-by: default avatarLei Zhang <zhang.lei@jp.fujitsu.com>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent adaab500

drivers/irqchip/irq-gic-v3-its.c

+10 −7
Original line number Diff line number Diff line
@@ -1597,6 +1597,15 @@ static void its_lpi_free(unsigned long *bitmap, u32 base, u32 nr_ids) 
	kfree(bitmap);

}



static void gic_reset_prop_table(void *va)

{

	/* Priority 0xa0, Group-1, disabled */

	memset(va, LPI_PROP_DEFAULT_PRIO | LPI_PROP_GROUP1, LPI_PROPBASE_SZ);



	/* Make sure the GIC will observe the written configuration */

	gic_flush_dcache_to_poc(va, LPI_PROPBASE_SZ);

}



static struct page *its_allocate_prop_table(gfp_t gfp_flags)

{

	struct page *prop_page;
@@ -1605,13 +1614,7 @@ static struct page *its_allocate_prop_table(gfp_t gfp_flags) 
	if (!prop_page)

		return NULL;



	/* Priority 0xa0, Group-1, disabled */

	memset(page_address(prop_page),

	       LPI_PROP_DEFAULT_PRIO | LPI_PROP_GROUP1,

	       LPI_PROPBASE_SZ);



	/* Make sure the GIC will observe the written configuration */

	gic_flush_dcache_to_poc(page_address(prop_page), LPI_PROPBASE_SZ);

	gic_reset_prop_table(page_address(prop_page));



	return prop_page;

}