ma, 2012-10-15 kello 15:41 +0530, Shubhrajyoti Datta kirjoitti: > On Mon, Oct 15, 2012 at 2:46 PM, Kalle Jokiniemi > <kalle.jokiniemi@xxxxxxxxxxxxxxx> wrote: > > ma, 2012-10-15 kello 09:21 +0300, Kalle Jokiniemi kirjoitti: > >> Hi, > >> > >> pe, 2012-10-12 kello 14:46 +0000, Strashko, Grygorii kirjoitti: > >> > Hi Kevin, > >> > > >> > yep, [1] is the same fix - thanks. > >> > > >> > Hi Kalle, > >> > > >> > i've applied these changes and PM runtime fix on top of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git (omap2plus_defconfig) > >> > Could you check it with your use case, pls? (just to be sure that idea is right) > >> > >> Odd, it's not working. I'll add some debug prints to see what happens > >> there. > > > > Well, seems after enabling irq 23 in the resume_noirq, someone does > > i2c_xfer and there is consequent flood of i2c_xfers and interrupts. > If there is continuous xfers, you could enable debug LL and see who is > queuing the > transfers. > > > > > Not sure now how these IRQ numbers get mapped these days, my debug print > > says it's irq number 72 (UART1 from TRM) that is flooding (although it's > > printed from the i2c-omap isr function, so it's still I2C bus irq...). > > Can you do a cat /proc/interrupts Yes :) [root@localhost proc]# cat interrupts CPU0 20: 0 INTC gpmc 23: 2 INTC TWL4030-PIH 25: 0 INTC l3-debug-irq 26: 0 INTC l3-app-irq 28: 48157 INTC DMA 40: 0 INTC omap-iommu.0 52: 0 INTC dsp_wdt 53: 807807 INTC gp_timer 65: 0 INTC omap-sham 72: 5490 INTC omap_i2c 73: 85 INTC omap_i2c 77: 0 INTC omap_i2c 90: 1069 INTC OMAP UART2 102: 55940 INTC mmc0 179: 6142 GPIO omap2-onenand 306: 44666 PRCM pm_wkup 315: 4 PRCM hwmod_io, pm_io 338: 0 twl4030 twl4030_gpio 343: 2 twl4030 twl4030_power 346: 0 twl4030 twl4030_pwrbutton 348: 2 twl4030 twl4030_usb 349: 0 twl4030 rtc0 Hmm, I did not notice that PIH handler before, makes sense now that it triggers the flood (irq 23) as it is really the one that passes the interrupts to other handlers. - Kalle > > > > > > The irq enabling (in resume_noirq) is still slightly progressing after > > the flooding starts, but my watchdog kicks in before we get to the > > finish. > > > > Attached my debug prints patch and log. I used also "no_console_suspend" > > boot option. > > > > - Kalle > > -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
