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path: root/drivers/irqchip/irq-gic-v3-its.c
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Diffstat (limited to 'drivers/irqchip/irq-gic-v3-its.c')
-rw-r--r--drivers/irqchip/irq-gic-v3-its.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 54ea4e26c7a9..0788de9a5407 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -690,9 +690,9 @@ static void its_flush_cmd(struct its_node *its, struct its_cmd_block *cmd)
dsb(ishst);
}
-static void its_wait_for_range_completion(struct its_node *its,
- struct its_cmd_block *from,
- struct its_cmd_block *to)
+static int its_wait_for_range_completion(struct its_node *its,
+ struct its_cmd_block *from,
+ struct its_cmd_block *to)
{
u64 rd_idx, from_idx, to_idx;
u32 count = 1000000; /* 1s! */
@@ -713,12 +713,15 @@ static void its_wait_for_range_completion(struct its_node *its,
count--;
if (!count) {
- pr_err_ratelimited("ITS queue timeout\n");
- return;
+ pr_err_ratelimited("ITS queue timeout (%llu %llu %llu)\n",
+ from_idx, to_idx, rd_idx);
+ return -1;
}
cpu_relax();
udelay(1);
}
+
+ return 0;
}
/* Warning, macro hell follows */
@@ -754,7 +757,8 @@ post: \
next_cmd = its_post_commands(its); \
raw_spin_unlock_irqrestore(&its->lock, flags); \
\
- its_wait_for_range_completion(its, cmd, next_cmd); \
+ if (its_wait_for_range_completion(its, cmd, next_cmd)) \
+ pr_err_ratelimited("ITS cmd %ps failed\n", builder); \
}
static void its_build_sync_cmd(struct its_cmd_block *sync_cmd,