From 2ed39a7b4fa60db0eb2ecbb0490bb7c79ad07235 Mon Sep 17 00:00:00 2001 From: Igor Russkikh Date: Fri, 6 Nov 2020 18:38:35 -0500 Subject: [PATCH 138/139] [netdrv] net: atlantic: Use readx_poll_timeout() for large timeout Message-id: <1604687916-15087-139-git-send-email-irusskik@redhat.com> Patchwork-id: 338561 Patchwork-instance: patchwork O-Subject: [RHEL8.4 BZ 1857861 138/139] net: atlantic: Use readx_poll_timeout() for large timeout Bugzilla: 1857861 RH-Acked-by: David Arcari RH-Acked-by: John Linville RH-Acked-by: Tony Camuso Bugzilla: http://bugzilla.redhat.com/1857861 commit 9553b62c1dd27df67ab2f52ec8a3bc3501887619 Author: Sebastian Andrzej Siewior Date: Tue Aug 18 18:14:39 2020 +0200 net: atlantic: Use readx_poll_timeout() for large timeout 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 Cc: Igor Russkikh Signed-off-by: Sebastian Andrzej Siewior Acked-by: Guenter Roeck Signed-off-by: David S. Miller Signed-off-by: Igor Russkikh Cc: David Arcari Cc: Igor Russkikh Signed-off-by: Jan Stancek --- 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; -- 2.13.6