[PATCH] reset: sti: rely on regmap_field_read_poll_timeout for ack wait

From: Alain Volmat
Date: Fri Feb 10 2023 - 17:44:13 EST


Use regmap_field_read_poll_timeout function when waiting for the
ack bit upon performing the reset control.

Signed-off-by: Alain Volmat <avolmat@xxxxxx>
---
drivers/reset/sti/reset-syscfg.c | 18 ++++--------------
1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/drivers/reset/sti/reset-syscfg.c b/drivers/reset/sti/reset-syscfg.c
index b4b46e0f207e..c1ba04f6f155 100644
--- a/drivers/reset/sti/reset-syscfg.c
+++ b/drivers/reset/sti/reset-syscfg.c
@@ -64,22 +64,12 @@ static int syscfg_reset_program_hw(struct reset_controller_dev *rcdev,
return err;

if (ch->ack) {
- unsigned long timeout = jiffies + msecs_to_jiffies(1000);
u32 ack_val;

- while (true) {
- err = regmap_field_read(ch->ack, &ack_val);
- if (err)
- return err;
-
- if (ack_val == ctrl_val)
- break;
-
- if (time_after(jiffies, timeout))
- return -ETIME;
-
- cpu_relax();
- }
+ err = regmap_field_read_poll_timeout(ch->ack, ack_val, (ack_val == ctrl_val),
+ 100, USEC_PER_SEC);
+ if (err)
+ return err;
}

return 0;
--
2.34.1