From 27a8d0f6c2d319256432b0448e9a1cf0cf28b595 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 18 Aug 2020 18:14:39 +0200
Subject: [PATCH 13/13] net: atlantic: Use readx_poll_timeout() for large
timeout
Patch-mainline: v5.9-rc2
Git-commit: 9553b62c1dd27df67ab2f52ec8a3bc3501887619
References: jsc#SLE-15148
Commit
8dcf2ad39fdb2 ("net: atlantic: add hwmon getter for MAC temperature")
implemented a read callback with an udelay(10000U). This fails to
compile on ARM because the delay is >1ms. I doubt that it is needed to
spin for 10ms even if possible on x86.
>From looking at the code, the context appears to be preemptible so using
usleep() should work and avoid busy spinning.
Use readx_poll_timeout() in the poll loop.
Fixes: 8dcf2ad39fdb2 ("net: atlantic: add hwmon getter for MAC temperature")
Cc: Mark Starovoytov <mstarovoitov@marvell.com>
Cc: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Denis Kirjanov <denis.kirjanov@suse.com>
---
drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
index 16a944707ba9..8941ac4df9e3 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
@@ -1631,8 +1631,8 @@ static int hw_atl_b0_get_mac_temp(struct aq_hw_s *self, u32 *temp)
hw_atl_ts_reset_set(self, 0);
}
- err = readx_poll_timeout_atomic(hw_atl_b0_ts_ready_and_latch_high_get,
- self, val, val == 1, 10000U, 500000U);
+ err = readx_poll_timeout(hw_atl_b0_ts_ready_and_latch_high_get, self,
+ val, val == 1, 10000U, 500000U);
if (err)
return err;
--
2.16.4