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e1242fc339
A patch was added in kernel 5.4 to support the fiber operation of AR8033 with ramips devices. In kernel 5.18 similar enhancements were added to the kernel. Those patches are required for other fiber based devices but when added, build fails for ramips targets. This commit removes the ramips patch and adds the kernel 5.18 ones. Signed-off-by: Daniel Kestrel <kestrel1974@t-online.de> [ split commit,refresh patch and improve commit message ] Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
57 lines
2.3 KiB
Diff
57 lines
2.3 KiB
Diff
From 9926de7315be3d606cc011a305ad9adb9e8e14c9 Mon Sep 17 00:00:00 2001
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From: Oleksij Rempel <o.rempel@pengutronix.de>
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Date: Sat, 18 Jun 2022 14:23:33 +0200
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Subject: [PATCH] net: phy: at803x: fix NULL pointer dereference on AR9331 PHY
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Latest kernel will explode on the PHY interrupt config, since it depends
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now on allocated priv. So, run probe to allocate priv to fix it.
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ar9331_switch ethernet.1:10 lan0 (uninitialized): PHY [!ahb!ethernet@1a000000!mdio!switch@10:00] driver [Qualcomm Atheros AR9331 built-in PHY] (irq=13)
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CPU 0 Unable to handle kernel paging request at virtual address 0000000a, epc == 8050e8a8, ra == 80504b34
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...
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Call Trace:
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[<8050e8a8>] at803x_config_intr+0x5c/0xd0
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[<80504b34>] phy_request_interrupt+0xa8/0xd0
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[<8050289c>] phylink_bringup_phy+0x2d8/0x3ac
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[<80502b68>] phylink_fwnode_phy_connect+0x118/0x130
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[<8074d8ec>] dsa_slave_create+0x270/0x420
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[<80743b04>] dsa_port_setup+0x12c/0x148
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[<8074580c>] dsa_register_switch+0xaf0/0xcc0
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[<80511344>] ar9331_sw_probe+0x370/0x388
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[<8050cb78>] mdio_probe+0x44/0x70
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[<804df300>] really_probe+0x200/0x424
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[<804df7b4>] __driver_probe_device+0x290/0x298
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[<804df810>] driver_probe_device+0x54/0xe4
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[<804dfd50>] __device_attach_driver+0xe4/0x130
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[<804dcb00>] bus_for_each_drv+0xb4/0xd8
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[<804dfac4>] __device_attach+0x104/0x1a4
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[<804ddd24>] bus_probe_device+0x48/0xc4
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[<804deb44>] deferred_probe_work_func+0xf0/0x10c
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[<800a0ffc>] process_one_work+0x314/0x4d4
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[<800a17fc>] worker_thread+0x2a4/0x354
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[<800a9a54>] kthread+0x134/0x13c
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[<8006306c>] ret_from_kernel_thread+0x14/0x1c
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Same Issue would affect some other PHYs (QCA8081, QCA9561), so fix it
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too.
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Fixes: 3265f4218878 ("net: phy: at803x: add fiber support")
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Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/phy/at803x.c | 6 ++++++
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1 file changed, 6 insertions(+)
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--- a/drivers/net/phy/at803x.c
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+++ b/drivers/net/phy/at803x.c
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@@ -1594,6 +1594,8 @@ static struct phy_driver at803x_driver[]
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/* ATHEROS AR9331 */
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PHY_ID_MATCH_EXACT(ATH9331_PHY_ID),
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.name = "Qualcomm Atheros AR9331 built-in PHY",
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+ .probe = at803x_probe,
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+ .remove = at803x_remove,
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.suspend = at803x_suspend,
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.resume = at803x_resume,
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.flags = PHY_POLL_CABLE_TEST,
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