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Subject: Re: [PATCH v4 0/7] add virt-dma support for imx-sdma
Am Donnerstag, den 14.06.2018, 10:09
...@intel.com; gre...@linuxfoundation.org; jsl...@suse.com
Cc: dmaeng...@vger.kernel.org; linux-kernel@vger.kernel.org;
linux-arm-ker...@lists.infradead.org; dl-linux-imx ;
linux-ser...@vger.kernel.org
Subject: Re: [PATCH v4 0/7] add virt-dma support for imx-sdma
Am Donnerstag, den 14.06.2018, 10:09
Am Donnerstag, den 14.06.2018, 10:09 + schrieb Robin Gong:
> Hi Lucas,
> Could you double check again? Still can reproduce lockdep
> warning on UART if change
> spin_lock_lockirqsave/spinlock_unlock_irqrestore to
> spin_lock/spin_unlock in sdma_int_handler as you said without
> patch7/7.
Am Donnerstag, den 14.06.2018, 10:09 + schrieb Robin Gong:
> Hi Lucas,
> Could you double check again? Still can reproduce lockdep
> warning on UART if change
> spin_lock_lockirqsave/spinlock_unlock_irqrestore to
> spin_lock/spin_unlock in sdma_int_handler as you said without
> patch7/7.
Hi Lucas,
Could you double check again? Still can reproduce lockdep
warning on UART if change
spin_lock_lockirqsave/spinlock_unlock_irqrestore to
spin_lock/spin_unlock in sdma_int_handler as you said without patch7/7.
Would you please ask below two more questions?
1. Does your uart case
Hi Lucas,
Could you double check again? Still can reproduce lockdep
warning on UART if change
spin_lock_lockirqsave/spinlock_unlock_irqrestore to
spin_lock/spin_unlock in sdma_int_handler as you said without patch7/7.
Would you please ask below two more questions?
1. Does your uart case
Hi Robin,
I just gave this series a spin and it seems there is even more locking
fun, see the lockdep output below. After taking a short look it seems
this is caused by using the wrong spinlock variants in
sdma_int_handler(), those should also use the _irqsave ones. When
fixing this you might
Hi Robin,
I just gave this series a spin and it seems there is even more locking
fun, see the lockdep output below. After taking a short look it seems
this is caused by using the wrong spinlock variants in
sdma_int_handler(), those should also use the _irqsave ones. When
fixing this you might
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