On Monday, May 12, 2014 at 04:35:23 AM, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
>
> Remove mutex_lock from probe in order to avoid the following warning:
>
> [ 8.526613] Freeing unused kernel memory: 232K (c0683000 - c06bd000)
> starting pid 56, tty '': '/etc/rc.d/rcS'
> [ 9.110314]
> [ 9.111864] =====================================
> [ 9.116603] [ BUG: init/1 still has locks held! ]
> [ 9.121488] 3.15.0-rc4-next-20140509-00001-g319564e #1154 Not tainted
> [ 9.128071] -------------------------------------
> [ 9.132825] 1 lock held by init/1:
> [ 9.136252] #0: (global_mutex){+.+.+.}, at: [<c0387d68>]
> mxs_dcp_probe+0x14 [ 9.144196]
> [ 9.144196] stack backtrace:
> [ 9.148888] CPU: 0 PID: 1 Comm: init Not tainted
> 3.15.0-rc4-next-20140509-004 [ 9.157610] [<c000da40>]
> (unwind_backtrace) from [<c000bda4>] (show_stack+0x) [ 9.165595]
> [<c000bda4>] (show_stack) from [<c00153d4>] (do_fork+0x2c8/0x3cc) [
> 9.172921] [<c00153d4>] (do_fork) from [<c0015550>] (sys_vfork+0x20/0x2c) [
> 9.179973] [<c0015550>] (sys_vfork) from [<c0009580>]
> (ret_fast_syscall+0x0)
>
> Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
> ---
> drivers/crypto/mxs-dcp.c | 47
> ++++++++++++++++------------------------------- 1 file changed, 16
> insertions(+), 31 deletions(-)
You can also eliminate the DECLARE_MUTEX() for global_mutex now.
Best regards,
Marek Vasut
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