On Wed, Jul 30, 2008 at 06:28:35PM +0530, ext Dasgupta, Romit wrote: > What is the application you are using and could you turn the musb driver debug options? You can try it by > > echo "D 3" > /proc/driver/musb_hdrc (Check if MUSB_DEBUG is enabled). it's D3, together :-) > > This should give more helpful messages. > > > > >-----Original Message----- > >From: linux-omap-open-source-bounces@xxxxxxxxxxxxxx [mailto:linux-omap-open- > >source-bounces@xxxxxxxxxxxxxx] On Behalf Of SUBHRANIL CHOUDHURY > >Sent: Wednesday, July 30, 2008 5:50 PM > >To: Gadiyar, Anand > >Cc: linux-omap-open-source@xxxxxxxxxxxxxx > >Subject: Re: USB driver issue > > > >hi, > >I am using Mistral OMAP3430 OSK2.1 board. It is the USB OTG port. > >The Philips tranciever ISP1504. > >I am enabling the EHCI and OHCI in the kernel menuconfig. > > > >This was the error print i was getting: > > > >Unable to handle kernel NULL pointer dereference at virtual address 00000000 > >pgd = c54d8000 > >[00000000] *pgd=81401031, *pte=00000000, *ppte=00000000 > >Internal error: Oops: 817 [#1] > >Modules linked in: > >CPU: 0 Not tainted (2.6.22.18-omap3 #29) > >PC is at consistent_sync+0x40/0xa4 > >LR is at usb_hcd_submit_urb+0x7b0/0x8b4 > >pc : [<c00315ac>] lr : [<c02307e0>] psr: 20000013 > >sp : c1403c48 ip : c1403c58 fp : c1403c54 > >r10: ffff8003 r9 : 00000020 r8 : 00000020 > >r7 : c483dc20 r6 : c0569000 r5 : c23c040c r4 : ff2d2000 > >r3 : 00000000 r2 : 00000002 r1 : ff2dba38 r0 : ff2d2000 > >Flags: nzCv IRQs on FIQs on Mode SVC_32 Segment user > >Control: 00c5387f Table: 854d8018 DAC: 00000015 > > > >Do you get some clue from this about what is happening? there must be a backtrace right after that, can you paste it as well? -- balbi -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
