Hi, On Tuesday 15 September 2015 01:52 AM, Tony Lindgren wrote: > Hi, > > * Ulf Hansson <ulf.hansson@xxxxxxxxxx> [150904 05:48]: >> >> Okay, just to be clear on the way forward. I spoked with Mark Brown >> offlist, and he will/has picked up the regulator patch and will send >> it as fix for the 4.3 rc[n]. >> >> Regarding the ARM patch here, I guess Tony might as well handle it and >> send through arm-soc, especially since the regression won't be fixed >> within my mmc tree anyway. >> >> So, I am going to leave my next branch as is - and thus relying on >> teet the regression for OMAP will be fixed in some the 4.3 rc[n]. > > I'm picking up the .dts changes from this series into > omap-for-v4.3/fixes as those are safe to apply while waiting > for the pbias-regulator.c fix to hit mainline. > > I'm not yet applying the related dts change "fix address translation > for pbias" as that depends on the pbias-regulator.c change. > > Howver, when testing all the patches applied, I'm still getting > the following splat at least on duovero (with MMC working): > > WARNING: CPU: 0 PID: 6 at drivers/regulator/core.c:2105 _regulator_disable+0x13c/0x1d4() > unbalanced disables for pbias_mmc_omap4 > Modules linked in: > CPU: 0 PID: 6 Comm: kworker/u4:0 Not tainted 4.3.0-rc1-00015-gf5c4173-dirty #1295 > Hardware name: Generic OMAP4 (Flattened Device Tree) > Workqueue: deferwq deferred_probe_work_func > [<c001770c>] (unwind_backtrace) from [<c0013a58>] (show_stack+0x10/0x14) > [<c0013a58>] (show_stack) from [<c0346628>] (dump_stack+0x84/0x9c) > [<c0346628>] (dump_stack) from [<c003e958>] (warn_slowpath_common+0x78/0xb4) > [<c003e958>] (warn_slowpath_common) from [<c003e9c4>] (warn_slowpath_fmt+0x30/0x40) > [<c003e9c4>] (warn_slowpath_fmt) from [<c03a4e74>] (_regulator_disable+0x13c/0x1d4) > [<c03a4e74>] (_regulator_disable) from [<c03a4f3c>] (regulator_disable+0x30/0x6c) > [<c03a4f3c>] (regulator_disable) from [<c04c55a8>] (omap_hsmmc_set_power+0x158/0x1e8) > [<c04c55a8>] (omap_hsmmc_set_power) from [<c04c57d0>] (omap_hsmmc_set_ios+0x198/0x318) > [<c04c57d0>] (omap_hsmmc_set_ios) from [<c04af404>] (mmc_power_up.part.10+0x30/0xf8) > [<c04af404>] (mmc_power_up.part.10) from [<c04b0310>] (mmc_start_host+0x40/0x7c) > [<c04b0310>] (mmc_start_host) from [<c04b1424>] (mmc_add_host+0x5c/0x84) > [<c04b1424>] (mmc_add_host) from [<c04c5010>] (omap_hsmmc_probe+0x5b0/0x9f0) > [<c04c5010>] (omap_hsmmc_probe) from [<c03e0e9c>] (platform_drv_probe+0x44/0xac) > [<c03e0e9c>] (platform_drv_probe) from [<c03df550>] (driver_probe_device+0x1f4/0x2f0) > [<c03df550>] (driver_probe_device) from [<c03dda5c>] (bus_for_each_drv+0x64/0x98) > [<c03dda5c>] (bus_for_each_drv) from [<c03df2d0>] (__device_attach+0xb0/0x118) > [<c03df2d0>] (__device_attach) from [<c03de878>] (bus_probe_device+0x88/0x90) > [<c03de878>] (bus_probe_device) from [<c03deca0>] (deferred_probe_work_func+0x60/0x90) > [<c03deca0>] (deferred_probe_work_func) from [<c005899c>] (process_one_work+0x1a4/0x558) > [<c005899c>] (process_one_work) from [<c0058d8c>] (worker_thread+0x3c/0x514) > [<c0058d8c>] (worker_thread) from [<c005eb1c>] (kthread+0xd4/0xf0) > [<c005eb1c>] (kthread) from [<c000f710>] (ret_from_fork+0x14/0x24) > > Kishon, can you please take a look? really weird, since I didn't see any issues with my OMAP4 PANDA. Most likely it's because the PBIAS register is not showing the correct state of PBIAS. So we might have to remove using regulator_is_enabled and use our own bookkeeping pbias_enabled variable. Anyway I'll check this. Thanks Kishon -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
