使用的AM3354的SPI0读写W25Q64，mfks.ext2 /dev/mtdblock4 结果崩溃了，如下图所示
[hh@hh /]#mkfs.ext2 /dev/mtdblock4
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
1056 inodes, 4216 blocks
210 blocks (5%) reserved for the super user
First data block=1
Maximum filesystem blocks=262144
1 block groups
8192 blocks per group, 8192 fragments per group
1056 inodes per group
[ 32.062193] ------------[ cut here ]------------
[ 32.067067] kernel BUG at /home/hh/wksp/tools/a8/hc6112_rt/hc6112_rtlinux/arch/arm/include/asm/dma-mapping.h:321!
[ 32.077836] Internal error: Oops - undefined instruction: 0 [#1]
[ 32.084136] Modules linked in:
[ 32.087350] CPU: 0 Tainted: G W (3.2.21 #38)
[ 32.093138] PC is at omap2_mcspi_transfer+0x3bc/0x43c
[ 32.098441] LR is at __spi_async+0xb4/0xc0
[ 32.102739] pc : [<c0270710>] lr : [<c026d7fc>] psr: 20000013
[ 32.102748] sp : df64fd58 ip : c0609344 fp : df64fdac
[ 32.114789] r10: c0609334 r9 : df6b9c00 r8 : df64fe44
[ 32.120270] r7 : e0871000 r6 : 00000000 r5 : 00001000 r4 : df64fe94
[ 32.127119] r3 : 00000000 r2 : 00001000 r1 : e0000000 r0 : 000005b6
求大神解惑
