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| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2016-11-02 14:54:04 +0300 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2016-11-29 12:14:48 +0300 |
| commit | d524eaa2a8c08efcdf905acf07cfa770e481ca6b (patch) | |
| tree | 20f3442799a492793f52d29032b1280b9691e756 /drivers/irqchip | |
| parent | b11283eb89b0697984cadee6016dabbcf511af27 (diff) | |
| download | linux-d524eaa2a8c08efcdf905acf07cfa770e481ca6b.tar.xz | |
irqchip/gic-v3-its: Narrow down Entry Size when used as a divider
GITS_BASER<n>'s Entry Size is much smaller than 64-bit, but when it
used as a divider it forces compiler to generate __aeabi_uldivmod if
build in 32-bit mode. So, casting it to int (like it is done in other
places) where used as a divider would give a hint to compiler that
32-bit division can be used.
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index bca125e6c8e8..312dd55dfaae 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -948,7 +948,7 @@ retry_baser: tmp = indirect ? GITS_LVL1_ENTRY_SIZE : esz; pr_info("ITS@%pa: allocated %d %s @%lx (%s, esz %d, psz %dK, shr %d)\n", - &its->phys_base, (int)(PAGE_ORDER_TO_SIZE(order) / tmp), + &its->phys_base, (int)(PAGE_ORDER_TO_SIZE(order) / (int)tmp), its_base_type_string[type], (unsigned long)virt_to_phys(base), indirect ? "indirect" : "flat", (int)esz, @@ -983,7 +983,7 @@ static bool its_parse_baser_device(struct its_node *its, struct its_baser *baser * which is reported by ITS hardware times lvl1 table * entry size. */ - ids -= ilog2(psz / esz); + ids -= ilog2(psz / (int)esz); esz = GITS_LVL1_ENTRY_SIZE; } } @@ -998,7 +998,7 @@ static bool its_parse_baser_device(struct its_node *its, struct its_baser *baser new_order = max_t(u32, get_order(esz << ids), new_order); if (new_order >= MAX_ORDER) { new_order = MAX_ORDER - 1; - ids = ilog2(PAGE_ORDER_TO_SIZE(new_order) / esz); + ids = ilog2(PAGE_ORDER_TO_SIZE(new_order) / (int)esz); pr_warn("ITS@%pa: Device Table too large, reduce ids %u->%u\n", &its->phys_base, its->device_ids, ids); } |