From: Marc Kleine-Budde <mkl@pengutronix.de>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, linux-can@vger.kernel.org,
kernel@pengutronix.de, Pankaj Sharma <pankj.sharma@samsung.com>,
Sriram Dash <sriram.dash@samsung.com>,
Dan Murphy <dmurphy@ti.com>,
Marc Kleine-Budde <mkl@pengutronix.de>
Subject: [PATCH 1/2] can: m_can_platform: set net_device structure as driver data
Date: Fri, 22 Nov 2019 15:52:50 +0100 [thread overview]
Message-ID: <20191122145251.9775-2-mkl@pengutronix.de> (raw)
In-Reply-To: <20191122145251.9775-1-mkl@pengutronix.de>
From: Pankaj Sharma <pankj.sharma@samsung.com>
The current code is failing during clock prepare enable because of not
getting proper clock from platform device.
[ 0.852089] Call trace:
[ 0.854516] 0xffff0000fa22a668
[ 0.857638] clk_prepare+0x20/0x34
[ 0.861019] m_can_runtime_resume+0x2c/0xe4
[ 0.865180] pm_generic_runtime_resume+0x28/0x38
[ 0.869770] __rpm_callback+0x16c/0x1bc
[ 0.873583] rpm_callback+0x24/0x78
[ 0.877050] rpm_resume+0x428/0x560
[ 0.880517] __pm_runtime_resume+0x7c/0xa8
[ 0.884593] m_can_clk_start.isra.9.part.10+0x1c/0xa8
[ 0.889618] m_can_class_register+0x138/0x370
[ 0.893950] m_can_plat_probe+0x120/0x170
[ 0.897939] platform_drv_probe+0x4c/0xa0
[ 0.901924] really_probe+0xd8/0x31c
[ 0.905477] driver_probe_device+0x58/0xe8
[ 0.909551] device_driver_attach+0x68/0x70
[ 0.913711] __driver_attach+0x9c/0xf8
[ 0.917437] bus_for_each_dev+0x50/0xa0
[ 0.921251] driver_attach+0x20/0x28
[ 0.924804] bus_add_driver+0x148/0x1fc
[ 0.928617] driver_register+0x6c/0x124
[ 0.932431] __platform_driver_register+0x48/0x50
[ 0.937113] m_can_plat_driver_init+0x18/0x20
[ 0.941446] do_one_initcall+0x4c/0x19c
[ 0.945259] kernel_init_freeable+0x1d0/0x280
[ 0.949591] kernel_init+0x10/0x100
[ 0.953057] ret_from_fork+0x10/0x18
[ 0.956614] Code: 00000000 00000000 00000000 00000000 (fa22a668)
[ 0.962681] ---[ end trace 881f71bd609de763 ]---
[ 0.967301] Kernel panic - not syncing: Attempted to kill init!
A device driver for CAN controller hardware registers itself with the
Linux network layer as a network device. So, the driver data for m_can
should ideally be of type net_device.
Fixes: f524f829b75a ("can: m_can: Create a m_can platform framework")
Signed-off-by: Pankaj Sharma <pankj.sharma@samsung.com>
Signed-off-by: Sriram Dash <sriram.dash@samsung.com>
Acked-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
drivers/net/can/m_can/m_can_platform.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/can/m_can/m_can_platform.c b/drivers/net/can/m_can/m_can_platform.c
index 6ac4c35f247a..2eaa3543d233 100644
--- a/drivers/net/can/m_can/m_can_platform.c
+++ b/drivers/net/can/m_can/m_can_platform.c
@@ -107,7 +107,7 @@ static int m_can_plat_probe(struct platform_device *pdev)
mcan_class->is_peripheral = false;
- platform_set_drvdata(pdev, mcan_class->dev);
+ platform_set_drvdata(pdev, mcan_class->net);
m_can_init_ram(mcan_class);
--
2.24.0
next prev parent reply other threads:[~2019-11-22 14:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-22 14:52 pull-request: can 2019-11-22 Marc Kleine-Budde
2019-11-22 14:52 ` Marc Kleine-Budde [this message]
2019-11-22 14:52 ` [PATCH 2/2] can: m_can_platform: remove unnecessary m_can_class_resume() call Marc Kleine-Budde
2019-11-22 17:42 ` pull-request: can 2019-11-22 David Miller
-- strict thread matches above, loose matches on Subject: below --
2019-11-19 10:20 [PATCH 0/2] can: m_can_platform: Bug fix of kernel panic for Pankaj Sharma
[not found] ` <CGME20191119102155epcas5p34ca3dfaba9eef8de24d1bc9d64ef5335@epcas5p3.samsung.com>
2019-11-19 10:20 ` [PATCH 1/2] can: m_can_platform: set net_device structure as driver data Pankaj Sharma
2019-11-19 14:43 ` Dan Murphy
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