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| author | Andre Przywara <andre.przywara@arm.com> | 2015-03-27 14:15:03 +0000 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2015-03-29 19:25:49 +0000 |
| commit | 7e195ba03738dec72fe337dcd3cb3c3c2bd66c30 (patch) | |
| tree | 79591b4235bb91febaaf646cde28c124938c45b4 /drivers/irqchip | |
| parent | 263fcd312deffb9bf10f007f958dccfa64a807f5 (diff) | |
| download | lwn-7e195ba03738dec72fe337dcd3cb3c3c2bd66c30.tar.gz lwn-7e195ba03738dec72fe337dcd3cb3c3c2bd66c30.zip | |
irqchip: gicv3-its: Fix device ID encoding
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>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 7318dba11957..fa0c43660c8b 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -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; } |