mirror of https://gitee.com/openkylin/linux.git
06151158f2
A spin_lock deadlock will occur when omap_mcbsp_request() is invoked. omap_mcbsp_request() \- clk_enable(mcbsp->clk) [takes and holds clockfw_lock] \- omap2_clk_enable() \- _omap2_clk_enable() \- omap_mcbsp_clk_enable() \- clk_enable(child clock) [tries for clockfw_lock again] mcbsp_clk is a virtual clock and it comprises several child clocks. when enable mcbsp_clk in omap_mcbsp_request(), the enable function of mcbsp_clk will enable its child clocks, then the deadlock occurs. The solution is to remove the virtual clock and enable these child clocks in omap_mcbsp_request() directly. Signed-off-by: Stanley.Miao <stanley.miao@windriver.com> Signed-off-by: Tony Lindgren <tony@atomide.com> |
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.. | ||
include/mach | ||
Kconfig | ||
Makefile | ||
clock.c | ||
common.c | ||
cpu-omap.c | ||
debug-devices.c | ||
debug-leds.c | ||
devices.c | ||
dma.c | ||
dmtimer.c | ||
fb.c | ||
gpio.c | ||
i2c.c | ||
io.c | ||
mailbox.c | ||
mailbox.h | ||
mcbsp.c | ||
mux.c | ||
ocpi.c | ||
sram.c | ||
usb.c |