Commit 8939e8cd authored by Zenghui Yu's avatar Zenghui Yu Committed by Greg Kroah-Hartman

irqchip/gic-v3-its: Fix ITT_entry_size accessor

[ Upstream commit 56841070 ]

According to ARM IHI 0069C (ID070116), we should use GITS_TYPER's
bits [7:4] as ITT_entry_size instead of [8:4]. Although this is
pretty annoying, it only results in a potential over-allocation
of memory, and nothing bad happens.

Fixes: 3dfa576b ("irqchip/gic-v3-its: Add probing for VLPI properties")
Signed-off-by: default avatarZenghui Yu <yuzenghui@huawei.com>
[maz: massaged subject and commit message]
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent a63215cb
...@@ -306,7 +306,7 @@ ...@@ -306,7 +306,7 @@
#define GITS_TYPER_PLPIS (1UL << 0) #define GITS_TYPER_PLPIS (1UL << 0)
#define GITS_TYPER_VLPIS (1UL << 1) #define GITS_TYPER_VLPIS (1UL << 1)
#define GITS_TYPER_ITT_ENTRY_SIZE_SHIFT 4 #define GITS_TYPER_ITT_ENTRY_SIZE_SHIFT 4
#define GITS_TYPER_ITT_ENTRY_SIZE(r) ((((r) >> GITS_TYPER_ITT_ENTRY_SIZE_SHIFT) & 0x1f) + 1) #define GITS_TYPER_ITT_ENTRY_SIZE(r) ((((r) >> GITS_TYPER_ITT_ENTRY_SIZE_SHIFT) & 0xf) + 1)
#define GITS_TYPER_IDBITS_SHIFT 8 #define GITS_TYPER_IDBITS_SHIFT 8
#define GITS_TYPER_DEVBITS_SHIFT 13 #define GITS_TYPER_DEVBITS_SHIFT 13
#define GITS_TYPER_DEVBITS(r) ((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1) #define GITS_TYPER_DEVBITS(r) ((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1)
......
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