GPIO简单驱动测试程序出错: BUG: soft lockup - CPU#0 stuck for 61s!
我编了一个简单的GPIO驱动程序,运行测试程序,出现如下错误,不知道如何确定原因,怎么修改,望大家指导,多谢!
root@am3517-evm:~/all_driver/CCD/ccd_test# ./ccd_test1
####CAIJI test device open####3
BUG: soft lockup - CPU#0 stuck for 61s! [ccd_test1:1498]
Modules linked in: ccd
Pid: 1498, comm: ccd_test1
CPU: 0 Not tainted (2.6.31-rc7-omap1-06331-g757f531 #1)
PC is at __delay+0x0/0xc
LR is at caiji_rd+0x30/0x3c [ccd]
pc : [<c016d940>] lr : [<bf000040>] psr: 20000013
sp : cd8f7f58 ip : 00000017 fp : be850c94
r10: 00000000 r9 : cd8f6000 r8 : 00001000
r7 : 00001000 r6 : cd8f7f80 r5 : be84fc84 r4 : cfa9d500
r3 : 00000003 r2 : 00000770 r1 : ff3fffff r0 : 000000cf
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 8fa34019 DAC: 00000015
BUG: soft lockup - CPU#0 stuck for 61s! [ccd_test1:1498]
Modules linked in: ccd