linux-kernel - [tip: irq/core] irqchip/gic-v3-its: Fix u64 to _

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Date:   Wed, 20 Nov 2019 13:21:06 -0000
From:   "tip-bot2 for Ben Dooks (Codethink)" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Ben Dooks <ben.dooks@...ethink.co.uk>,
        Marc Zyngier <maz@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org
Subject: [tip: irq/core] irqchip/gic-v3-its: Fix u64 to __le64 warnings

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     2bbdfcc54ba857ce5da9a5741379dd03ba94c947
Gitweb:        https://git.kernel.org/tip/2bbdfcc54ba857ce5da9a5741379dd03ba94c947
Author:        Ben Dooks (Codethink) <ben.dooks@...ethink.co.uk>
AuthorDate:    Thu, 17 Oct 2019 12:29:55 +01:00
Committer:     Marc Zyngier <maz@...nel.org>
CommitterDate: Sun, 10 Nov 2019 18:47:45 

irqchip/gic-v3-its: Fix u64 to __le64 warnings

The its_cmd_block struct can either have u64 or __le64
data in it, so make a anonymous union to remove the
sparse warnings when converting to/from these.

Signed-off-by: Ben Dooks <ben.dooks@...ethink.co.uk>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20191017112955.15853-1-ben.dooks@codethink.co.uk
---
 drivers/irqchip/irq-gic-v3-its.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 787e8ee..021e0c7 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -305,7 +305,10 @@ struct its_cmd_desc {
  * The ITS command block, which is what the ITS actually parses.
  */
 struct its_cmd_block {
-	u64	raw_cmd[4];
+	union {
+		u64	raw_cmd[4];
+		__le64	raw_cmd_le[4];
+	};
 };
 
 #define ITS_CMD_QUEUE_SZ		SZ_64K
@@ -414,10 +417,10 @@ static void its_encode_vpt_size(struct its_cmd_block *cmd, u8 vpt_size)
 static inline void its_fixup_cmd(struct its_cmd_block *cmd)
 {
 	/* Let's fixup BE commands */
-	cmd->raw_cmd[0] = cpu_to_le64(cmd->raw_cmd[0]);
-	cmd->raw_cmd[1] = cpu_to_le64(cmd->raw_cmd[1]);
-	cmd->raw_cmd[2] = cpu_to_le64(cmd->raw_cmd[2]);
-	cmd->raw_cmd[3] = cpu_to_le64(cmd->raw_cmd[3]);
+	cmd->raw_cmd_le[0] = cpu_to_le64(cmd->raw_cmd[0]);
+	cmd->raw_cmd_le[1] = cpu_to_le64(cmd->raw_cmd[1]);
+	cmd->raw_cmd_le[2] = cpu_to_le64(cmd->raw_cmd[2]);
+	cmd->raw_cmd_le[3] = cpu_to_le64(cmd->raw_cmd[3]);
 }
 
 static struct its_collection *its_build_mapd_cmd(struct its_node *its,