Firewire on ARM system

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<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>Hello,</div>

<div>unfortunately I&#39;m not able to use my Xio2213b mini-pcie card on an ARM system. I&#39;m not able to ping another firewire card. Sometimes the card isn&#39;t even recognized. Is this a bug?</div>

<div>Activating lock debug statistics&nbsp;and disabling SMP&nbsp;improves the problem but doesn&#39;t solve it. I&#39;m just a beginner to kernel debugging.&nbsp;So I would be&nbsp;glad, if someone could help me.</div>

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<div><u>uname -a</u><br/>
Linux am57xx-evm 4.4.41-gf9f6f0db2d #1 SMP PREEMPT Wed May 10 16:57:47 CEST 2017 armv7l GNU/Linux</div>

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<div><u>lsmod &#124; grep -e 1394 -e firewire</u></div>

<div>firewire_ohci &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;32959 &nbsp;0<br/>
firewire_core &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;59859 &nbsp;1 firewire_ohci<br/>
crc_itu_t &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1669 &nbsp;1 firewire_core</div>

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<div><u>lspci</u></div>

<div>00:00.0 PCI bridge: Texas Instruments Device 8888 (rev 01)<br/>
01:00.0 PCI bridge: Texas Instruments XIO2213A/B/XIO2221 PCI Express to PCI Bridge [Cheetah Express] (rev 01)<br/>
02:00.0 FireWire (IEEE 1394): Texas Instruments XIO2213A/B/XIO2221 IEEE-1394b OHCI Controller [Cheetah Express] (rev 01)</div>

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<div>Best regards,</div>

<div>Sascha</div>

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