From mboxrd@z Thu Jan 1 00:00:00 1970 From: pavel@ucw.cz (Pavel Machek) Date: Fri, 15 Jun 2018 13:39:19 +0200 Subject: v4.18-rc0: ohci-platform on n900 oops-es on reboot In-Reply-To: <20180614194449.GB17808@amd> References: <20180614194449.GB17808@amd> Message-ID: <20180615113919.GA28328@amd> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi! > When I enable > > CONFIG_USB_OHCI_HCD=y > CONFIG_USB_OHCI_HCD_OMAP3=y > CONFIG_USB_OHCI_HCD_PLATFORM=y > > on n900 (I need it on droid4 and want common config), I get oops when > attempting to reboot the system. I believe problem is there in v4.17, > too. > > I'll try to build it as a module and debug, but if you have better > idea, let me know... It oopses in the ohci_shutdown, see the "oopses here" below. Any ideas? Pavel + printk(KERN_CRIT "ohci_shutdown... have pointers %lx, %lx\n", hcd, ohci); ohci_writel(ohci, (u32) ~0, &ohci->regs->intrdisable); + printk(KERN_CRIT "ohci_shutdown... disable done\n"); + udelay(1000); + printk(KERN_CRIT "ohci_shutdown... disable done\n"); /* Software reset, after which the controller goes into SUSPEND */ ohci_writel(ohci, OHCI_HCR, &ohci->regs->cmdstatus); + printk(KERN_CRIT "ohci_shutdown... writel done\n"); ohci_readl(ohci, &ohci->regs->cmdstatus); /* flush the writes */ + /* It oopses here */ + printk(KERN_CRIT "ohci_shutdown... readl done\n"); udelay(10); + printk(KERN_CRIT "ohci_shutdown... reset done\n"); ohci_writel(ohci, ohci->fminterval, &ohci->regs->fminterval); ohci->rh_state = OHCI_RH_HALTED; + + printk(KERN_CRIT "ohci_shutdown... all ok?\n"); -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 181 bytes Desc: Digital signature URL: