Messages in this thread | | | Date | Thu, 21 Feb 2013 19:04:39 -0500 | From | Joseph Salisbury <> | Subject | Re: [v3.8 Regression] watchdog: sp5100_tco: Add SB8x0 chipset support |
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On 02/18/2013 12:14 PM, Tanaka Takahisa wrote: > Hi Joseph, > > Thanks a lot for your help. > >> The bug report tested a kernel with the patches. However, he reports the kernel panic still occurs[0]. > I understood. I guess this problem conflicts with the watchdog MMIO > address (*) written in SB700 chipset and other resource. So, I made a > patch which gets rid of the code considered to cause the problem. If > this patch is applied, although the SP5100 and SB7x0 chipsets can't > use watchdog function any longer, I'm sure attached patch resolve the > problem. The SB800 or later chipsets can be used as before. > (*)This address is obtained from allocate_resource() function. > > I'm sorry to trouble you, but Would you confirm whether attached patch > solves a problem? > If there is no problem in this patch, I will submit this patch to a > linux-watchdog community.
This patch did resolve the issue. The bug reporter states the panic no longer happens and the system boots. Thanks so much for your assistance.
> > >> I've requested a digital image or screen capture of the panic. Is >> there any additional debug information you thing would be helpful? > I'm interested in the I/O resource of PC in which the problem has > occurred, So, I want the result of 'cat /proc/iomem'. When 'cat > /proc/iomem' is performed, I don't care about whether sp5100_tco > driver is loaded.
The I/O data can be seen at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1116835/+attachment/3540738/+files/iomem.txt
> > > Thanks in advance. > Takahisa
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