Hi!
On Wednesday 16 April 2014 09:38:44 micky_ch...@realsil.com.cn wrote:
From: Micky Ching micky_ch...@realsil.com.cn
To avoid dead lock, we need make sure host-lock is always acquire
before pcr-lock. But in irq handler, we acquired pcr-lock in rtsx mfd
driver, and sd_isr_done_transfer()
. According to the tasklets
documentation[1], they always run at interrupts (i.e., at any time, possibly
right after tasklet_schedule if I got this right?).
These tasklets however do get scheduled *under* the host-lock which will
cause a deadlock. This proposed patch (mmc: rtsx: fix possible circular
From: Micky Ching micky_ch...@realsil.com.cn
To avoid dead lock, we need make sure host-lock is always acquire
before pcr-lock. But in irq handler, we acquired pcr-lock in rtsx mfd
driver, and sd_isr_done_transfer() is called during pcr-lock already
acquired. Since in sd_isr_done_transfer() the
