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irqchip: gicv3-its: Fix device ID encoding

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When building ITS commands which have the device ID in it, we
should mask off the whole upper 32 bits of the first command word
before inserting the new value in there.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1427465705-17126-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Andre Przywara 2015-03-27 14:15:03 +00:00 committed by Jason Cooper
parent 263fcd312d
commit 7e195ba037
1 changed files with 1 additions and 1 deletions
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2
drivers/irqchip/irq-gic-v3-its.c
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@ -169,7 +169,7 @@ static void its_encode_cmd(struct its_cmd_block *cmd, u8 cmd_nr)
static void its_encode_devid(struct its_cmd_block *cmd, u32 devid)
{
cmd->raw_cmd[0] &= ~(0xffffUL << 32);
cmd->raw_cmd[0] &= BIT_ULL(32) - 1;
cmd->raw_cmd[0] |= ((u64)devid) << 32;
}