Hi, Sachin. Did you check the below patch? https://patchwork.kernel.org/patch/4346781/ I will resend the patch after including the ARM soc mailing. dw-mmc controller used the mmc_of_parse(), but it can't parse the sub-node. After checking it, let me know your result, plz. Best Regards, Jaehoon Chung On 06/18/2014 07:11 PM, Sachin Kamat wrote: > Hi Jaehoon, > > I get the below crash on Exyos5250 based Arndale board with linux-next > (20140618) kernel. > Looks like the following patch is causing it > Commit da118915cc72 " mmc: dw_mmc: replace "disable-wp" from slot's > quirk to host's quirk" > > Reverting the above patch fixes the issue. > > The below changes in dts file also did not help. > > diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts > b/arch/arm/boot/dts/exynos5250-arndale.dts > index d0de1f50d15b..617fc5fe50f7 100644 > --- a/arch/arm/boot/dts/exynos5250-arndale.dts > +++ b/arch/arm/boot/dts/exynos5250-arndale.dts > @@ -422,6 +422,7 @@ > num-slots = <1>; > supports-highspeed; > card-detect-delay = <200>; > + disable-wp; > samsung,dw-mshc-ciu-div = <3>; > samsung,dw-mshc-sdr-timing = <2 3>; > samsung,dw-mshc-ddr-timing = <1 2>; > @@ -432,7 +433,6 @@ > slot@0 { > reg = <0>; > bus-width = <4>; > - disable-wp; > }; > }; > > Please check. > > > -- [ 2.043665] mmc_host mmc0: Bus speed (slot 0) = 100000000Hz > (slot req 52000000Hz, actual 50000000HZ div = 1) > [ 2.044300] Waiting for root device /dev/mmcblk1p3... > [ 2.058350] mmc0: new DDR MMC card at address 0001 > [ 2.063256] mmcblk0: mmc0:0001 M4G1FA 3.72 GiB > [ 2.067633] mmcblk0boot0: mmc0:0001 M4G1FA partition 1 1.00 MiB > [ 2.073531] mmcblk0boot1: mmc0:0001 M4G1FA partition 2 1.00 MiB > [ 2.079433] mmcblk0rpmb: mmc0:0001 M4G1FA partition 3 128 KiB > [ 2.086554] mmcblk0: p1 p2 p3 p4 > [ 2.089706] mmcblk0boot1: unknown partition table > [ 2.093953] mmcblk0boot0: unknown partition table > [ 2.098345] platform 122f0000.sata: Driver ahci requests probe deferral > [ 2.172280] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot > req 50000000Hz, actual 50000000HZ div = 0) > [ 2.180563] mmc1: new high speed SDHC card at address aaaa > [ 2.186220] mmcblk1: mmc1:aaaa SU04G 3.69 GiB (ro) > [ 2.192336] mmcblk1: p1 p2 p3 > [ 2.194654] platform 122f0000.sata: Driver ahci requests probe deferral > [ 2.250761] VFS: Cannot open root device "mmcblk1p3" or > unknown-block(179,67): error -30 > [ 2.257452] Please append a correct "root=" boot option; here are > the available partitions: > [ 2.265787] b300 3907584 mmcblk0 driver: mmcblk > [ 2.271059] b301 2352800 mmcblk0p1 00000000-01 > [ 2.276312] b302 507872 mmcblk0p2 00000000-02 > [ 2.281606] b303 507840 mmcblk0p3 00000000-03 > [ 2.286899] b304 507840 mmcblk0p4 00000000-04 > [ 2.292206] b330 128 mmcblk0rpmb (driver?) > [ 2.297406] b320 1024 mmcblk0boot1 (driver?) > [ 2.302700] b310 1024 mmcblk0boot0 (driver?) > [ 2.307994] b340 3872256 mmcblk1 driver: mmcblk > [ 2.313289] b341 4095 mmcblk1p1 0005ac11-01 > [ 2.318582] b342 53248 mmcblk1p2 0005ac11-02 > [ 2.323876] b343 3814912 mmcblk1p3 0005ac11-03 > [ 2.329174] Kernel panic - not syncing: VFS: Unable to mount root > fs on unknown-block(179,67) > [ 2.337696] CPU: 0 PID: 1 Comm: swapper/0 Not tainted > 3.16.0-rc1-next-20140618-00048-g868c90fe6c88 #2106 > [ 2.347186] [<c0216130>] (unwind_backtrace) from [<c0211ccc>] > (show_stack+0x10/0x14) > [ 2.354895] [<c0211ccc>] (show_stack) from [<c0822420>] > (dump_stack+0x8c/0x9c) > [ 2.362090] [<c0822420>] (dump_stack) from [<c0821b80>] (panic+0xa4/0x21c) > [ 2.368950] [<c0821b80>] (panic) from [<c0ae50d4>] > (mount_block_root+0x1a0/0x230) > [ 2.376415] [<c0ae50d4>] (mount_block_root) from [<c0ae526c>] > (mount_root+0x108/0x110) > [ 2.384313] [<c0ae526c>] (mount_root) from [<c0ae53cc>] > (prepare_namespace+0x158/0x19c) > [ 2.392301] [<c0ae53cc>] (prepare_namespace) from [<c0ae4d90>] > (kernel_init_freeable+0x1cc/0x1dc) > [ 2.401159] [<c0ae4d90>] (kernel_init_freeable) from [<c081fed4>] > (kernel_init+0xc/0xe8) > [ 2.409229] [<c081fed4>] (kernel_init) from [<c020e838>] > (ret_from_fork+0x14/0x3c) > [ 2.416770] CPU1: stopping > [ 2.419453] CPU: 1 PID: 0 Comm: swapper/1 Not tainted > 3.16.0-rc1-next-20140618-00048-g868c90fe6c88 #2106 > [ 2.428948] [<c0216130>] (unwind_backtrace) from [<c0211ccc>] > (show_stack+0x10/0x14) > [ 2.436660] [<c0211ccc>] (show_stack) from [<c0822420>] > (dump_stack+0x8c/0x9c) > [ 2.443856] [<c0822420>] (dump_stack) from [<c02149ac>] > (handle_IPI+0x150/0x170) > [ 2.451233] [<c02149ac>] (handle_IPI) from [<c0208910>] > (gic_handle_irq+0x64/0x68) > [ 2.458781] [<c0208910>] (gic_handle_irq) from [<c0212840>] > (__irq_svc+0x40/0x50) > [ 2.466239] Exception stack(0xe989ff90 to 0xe989ffd8) > [ 2.471268] ff80: ffffffed > 00000000 ffffffed c021f6c0 > [ 2.479438] ffa0: e989e020 c0b94458 c0b944c4 00000000 00000000 > e989e000 c082ef44 c0b88da8 > [ 2.487594] ffc0: c0b95858 e989ffd8 c020f374 c020f378 60000113 ffffffff > [ 2.494195] [<c0212840>] (__irq_svc) from [<c020f378>] > (arch_cpu_idle+0x38/0x3c) > [ 2.501587] [<c020f378>] (arch_cpu_idle) from [<c027d7e4>] > (cpu_startup_entry+0x1e8/0x23c) > [ 2.509823] [<c027d7e4>] (cpu_startup_entry) from [<40208a44>] (0x40208a44) > [ 2.516761] ---[ end Kernel panic - not syncing: VFS: Unable to > mount root fs on unknown-block(179,67) > *********************************** > > > Regards, > Sachin. > -- > 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 > -- 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
