From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Zhang Run <zhang.run@zte.com.cn>,
"David S . Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>,
linux-usb@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 21/27] net: usb: asix: ax88772_bind return error when hw_reset fail
Date: Thu, 14 Feb 2019 21:14:18 -0500 [thread overview]
Message-ID: <20190215021424.178979-21-sashal@kernel.org> (raw)
In-Reply-To: <20190215021424.178979-1-sashal@kernel.org>
From: Zhang Run <zhang.run@zte.com.cn>
[ Upstream commit 6eea3527e68acc22483f4763c8682f223eb90029 ]
The ax88772_bind() should return error code immediately when the PHY
was not reset properly through ax88772a_hw_reset().
Otherwise, The asix_get_phyid() will block when get the PHY
Identifier from the PHYSID1 MII registers through asix_mdio_read()
due to the PHY isn't ready. Furthermore, it will produce a lot of
error message cause system crash.As follows:
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to send
software reset: ffffffb9
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to enable
software MII access
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to enable
software MII access
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read
reg index 0x0000: -71
...
Signed-off-by: Zhang Run <zhang.run@zte.com.cn>
Reviewed-by: Yang Wei <yang.wei9@zte.com.cn>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/usb/asix_devices.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c
index 5be6b67492d5..393fd3ed6b94 100644
--- a/drivers/net/usb/asix_devices.c
+++ b/drivers/net/usb/asix_devices.c
@@ -729,8 +729,13 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, 0, 0, 1, &chipcode, 0);
chipcode &= AX_CHIPCODE_MASK;
- (chipcode == AX_AX88772_CHIPCODE) ? ax88772_hw_reset(dev, 0) :
- ax88772a_hw_reset(dev, 0);
+ ret = (chipcode == AX_AX88772_CHIPCODE) ? ax88772_hw_reset(dev, 0) :
+ ax88772a_hw_reset(dev, 0);
+
+ if (ret < 0) {
+ netdev_dbg(dev->net, "Failed to reset AX88772: %d\n", ret);
+ return ret;
+ }
/* Read PHYID register *AFTER* the PHY was reset properly */
phyid = asix_get_phyid(dev);
--
2.19.1
next prev parent reply other threads:[~2019-02-15 2:21 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-15 2:13 [PATCH AUTOSEL 4.9 01/27] drm/msm: Unblock writer if reader closes file Sasha Levin
2019-02-15 2:13 ` [PATCH AUTOSEL 4.9 02/27] ASoC: Intel: Haswell/Broadwell: fix setting for .dynamic field Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 03/27] ALSA: compress: prevent potential divide by zero bugs Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 04/27] thermal: int340x_thermal: Fix a NULL vs IS_ERR() check Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 05/27] usb: dwc3: gadget: synchronize_irq dwc irq in suspend Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 06/27] usb: dwc3: gadget: Fix the uninitialized link_state when udc starts Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 07/27] usb: gadget: Potential NULL dereference on allocation error Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 08/27] ASoC: dapm: change snprintf to scnprintf for possible overflow Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 09/27] ASoC: imx-audmux: " Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 10/27] ARC: fix __ffs return value to avoid build warnings Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 11/27] drivers: thermal: int340x_thermal: Fix sysfs race condition Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 12/27] mac80211: fix miscounting of ttl-dropped frames Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 13/27] locking/rwsem: Fix (possible) missed wakeup Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 14/27] libceph: avoid KEEPALIVE_PENDING races in ceph_con_keepalive() Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 15/27] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 16/27] direct-io: allow direct writes to empty inodes Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 17/27] scsi: csiostor: fix NULL pointer dereference in csio_vport_set_state() Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 18/27] net: altera_tse: fix connect_local_phy error path Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 19/27] sfc: suppress duplicate nvmem partition types in efx_ef10_mtd_probe Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 20/27] ax25: fix possible use-after-free Sasha Levin
2019-02-15 2:14 ` Sasha Levin [this message]
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 22/27] ibmveth: Do not process frames after calling napi_reschedule Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 23/27] mac80211: don't initiate TDLS connection if station is not associated to AP Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 24/27] mac80211: Add attribute aligned(2) to struct 'action' Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 25/27] cfg80211: extend range deviation for DMG Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 26/27] svm: Fix AVIC incomplete IPI emulation Sasha Levin
2019-02-15 2:14 ` [PATCH AUTOSEL 4.9 27/27] KVM: nSVM: clear events pending from svm_complete_interrupts() when exiting to L1 Sasha Levin
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