linux-kernel - Re: mmc vs. suspend: WARNING: drivers/base/power/main.c:77 device_pm

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Date:	Mon, 7 Jul 2008 21:56:22 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Pavel Machek <pavel@...e.cz>
Cc:	kernel list <linux-kernel@...r.kernel.org>, drzeus-mmc@...eus.cx
Subject: Re: mmc vs. suspend: WARNING: drivers/base/power/main.c:77 device_pm_add

On Monday, 7 of July 2008, Pavel Machek wrote:
> Hi!
> 
> 
> I got this while suspending with mmc card inserted. 2.6.26-rc8.

Known issue, harmless warning.

Thanks,
Rafael


> rt DPO or FUA
> Jul  7 20:29:08 amd kernel: sd 0:0:0:0: [sda] 117210240 512-byte
> hardware sectors (60012 MB)
> Jul  7 20:29:08 amd kernel: sd 0:0:0:0: [sda] Write Protect is off
> Jul  7 20:29:08 amd kernel: sd 0:0:0:0: [sda] Write cache: enabled,
> read cache: enabled, doesn't support DPO or FUA
> Jul  7 20:29:08 amd kernel: mmc0: new MMC card at address 0001
> Jul  7 20:29:08 amd kernel: mmc mmc0:0001: parent mmc0 is sleeping
> Jul  7 20:29:08 amd kernel: ------------[ cut here ]------------
> Jul  7 20:29:08 amd kernel: WARNING: at
> /data/l/linux/drivers/base/power/main.c:77 device_pm_add+0x60/0xd0()
> Jul  7 20:29:08 amd kernel: Modules linked in:
> Jul  7 20:29:08 amd kernel: Pid: 292, comm: kmmcd Not tainted
> 2.6.26-rc8 #312
> Jul  7 20:29:08 amd kernel:  [<c022910f>] warn_on_slowpath+0x5f/0x90
> Jul  7 20:29:08 amd kernel:  [<c0730c4a>] _spin_lock_irqsave+0x3a/0x50
> Jul  7 20:29:08 amd kernel:  [<c02405a1>] up+0x11/0x40
> Jul  7 20:29:08 amd kernel:  [<c0229a7e>]
> release_console_sem+0x19e/0x1d0
> Jul  7 20:29:08 amd kernel:  [<c02bcff5>]
> sysfs_addrm_finish+0x15/0x1e0
> Jul  7 20:29:08 amd kernel:  [<c02bca20>] sysfs_ilookup_test+0x0/0x10
> Jul  7 20:29:08 amd kernel:  [<c072f64d>]
> mutex_lock_nested+0x13d/0x1f0
> Jul  7 20:29:08 amd kernel:  [<c04262b3>] device_pm_add+0x13/0xd0
> Jul  7 20:29:08 amd kernel:  [<c04262b3>] device_pm_add+0x13/0xd0
> Jul  7 20:29:08 amd kernel:  [<c022a08b>] printk+0x1b/0x20
> Jul  7 20:29:08 amd kernel:  [<c0426300>] device_pm_add+0x60/0xd0
> Jul  7 20:29:08 amd kernel:  [<c0421528>] device_add+0x388/0x500
> Jul  7 20:29:08 amd kernel:  [<c059a191>] mmc_add_card+0xa1/0x120
> Jul  7 20:29:08 amd kernel:  [<c059aa3e>] mmc_attach_mmc+0x1ce/0x840
> Jul  7 20:29:08 amd kernel:  [<c0599dd0>] mmc_rescan+0x0/0x180
> Jul  7 20:29:08 amd kernel:  [<c0599f35>] mmc_rescan+0x165/0x180
> Jul  7 20:29:08 amd kernel:  [<c02390d1>] run_workqueue+0x121/0x1d0
> Jul  7 20:29:08 amd kernel:  [<c023907d>] run_workqueue+0xcd/0x1d0
> Jul  7 20:29:08 amd kernel:  [<c0239a30>] worker_thread+0x0/0xf0
> Jul  7 20:29:08 amd kernel:  [<c0239acc>] worker_thread+0x9c/0xf0
> Jul  7 20:29:08 amd kernel:  [<c023c6f0>]
> autoremove_wake_function+0x0/0x50
> Jul  7 20:29:08 amd kernel:  [<c0239a30>] worker_thread+0x0/0xf0
> Jul  7 20:29:08 amd kernel:  [<c023c3f2>] kthread+0x42/0x70
> Jul  7 20:29:08 amd kernel:  [<c023c3b0>] kthread+0x0/0x70
> Jul  7 20:29:08 amd kernel:  [<c02047ab>]
> kernel_thread_helper+0x7/0x1c
> Jul  7 20:29:08 amd kernel:  =======================
> Jul  7 20:29:08 amd kernel: ---[ end trace 24bbd6dd8cd33b0a ]---
> Jul  7 20:29:08 amd kernel: mmcblk0: mmc0:0001 MMC    1019392KiB
> Jul  7 20:29:08 amd kernel:  mmcblk0: p1
> 
> 									Pavel


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