linux-next 20101115 fails to boot on zoom3

linux-next 20101115 fails to boot on zoom3

[Anand Gadiyar]

Hi all,

Linux-next as of 20101115 fails to boot up on a zoom3. earlyprintk throws
the following crash.

[    0.000000] MUX: Add partition: #1: core, flags: 0
[    0.000000] Unable to handle kernel paging request at virtual address 01000268
[    0.000000] pgd = c0004000
[    0.000000] [01000268] *pgd=00000000
[    0.000000] Internal error: Oops: 805 [#1]
[    0.000000] last sysfs file:
[    0.000000] Modules linked in:
[    0.000000] CPU: 0    Tainted: G        W    (2.6.37-rc1-mode1-debug+ #8)
[    0.000000] PC is at omap_mux_write+0x1c/0x28
[    0.000000] LR is at omap_mux_write_array+0x30/0x44
[    0.000000] pc : [<c04a9798>]    lr : [<c04a97d4>]    psr: 40000013
[    0.000000] sp : c7819ee0  ip : c7819ef0  fp : c7819eec
[    0.000000] r10: 00000002  r9 : c786b9c8  r8 : c048e078
[    0.000000] r7 : c782a480  r6 : fa002030  r5 : c048ec14  r4 : 00000004
[    0.000000] r3 : 01000100  r2 : 00000168  r1 : 0000011c  r0 : fa002030
[    0.000000] Flags: nZcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[    0.000000] Control: 10c5387f  Table: 80004019  DAC: 00000017
[    0.000000] Process swapper (pid: 1, stack limit = 0xc78182f0)
[    0.000000] Stack: (0xc7819ee0 to 0xc781a000)
[    0.000000] 9ee0: c7819f0c c7819ef0 c04a97d4 c04a9788 0000ffff c782a480 c786b9c0 c097b3a8
[    0.000000] 9f00: c7819f64 c7819f10 c000f1a4 c04a97b0 c07f3b48 c07f3a50 c09708b0 00000000
[    0.000000] 9f20: c08d0300 c782a494 c7819f44 c7819f38 00000000 c09708b0 c7819f6c c002f600
[    0.000000] 9f40: c000ba2c c04c7434 00000000 00000000 00000000 00000000 c7819f84 c7819f68
[    0.000000] 9f60: c0010364 c000ed38 c048b7c8 c048aad8 c048ec14 c048a160 c7819f94 c7819f88
[    0.000000] 9f80: c0013224 c00102d8 c7819fa4 c7819f98 c000ba4c c0013218 c7819fdc c7819fa8
[    0.000000] 9fa0: c04943d4 c000ba38 00000191 c0008644 c04c7434 00000013 c002f600 c0008644
[    0.000000] 9fc0: c04c7434 00000013 00000000 00000000 c7819ff4 c7819fe0 c00086e0 c049430c
[    0.000000] 9fe0: 00000000 00000000 00000000 c7819ff8 c04c7434 c0008650 fdffffff fffffffe
[    0.000000] Backtrace:
[    0.000000] [<c04a977c>] (omap_mux_write+0x0/0x28) from [<c04a97d4>] (omap_mux_write_array+0x30/0x44)
[    0.000000] [<c04a97a4>] (omap_mux_write_array+0x0/0x44) from [<c000f1a4>] (omap_mux_init+0x478/0x4e4)
[    0.000000]  r6:c097b3a8 r5:c786b9c0 r4:c782a480 r3:0000ffff
[    0.000000] [<c000ed2c>] (omap_mux_init+0x0/0x4e4) from [<c0010364>] (omap3_mux_init+0x98/0xc4)
[    0.000000] [<c00102cc>] (omap3_mux_init+0x0/0xc4) from [<c0013224>] (omap_zoom_init+0x18/0x54)
[    0.000000] [<c001320c>] (omap_zoom_init+0x0/0x54) from [<c000ba4c>] (customize_machine+0x20/0x2c)
[    0.000000] [<c000ba2c>] (customize_machine+0x0/0x2c) from [<c04943d4>] (do_one_initcall+0xd4/0x1a8)
[    0.000000] [<c0494300>] (do_one_initcall+0x0/0x1a8) from [<c00086e0>] (kernel_init+0x9c/0x154)
[    0.000000] [<c0008644>] (kernel_init+0x0/0x154) from [<c04c7434>] (do_exit+0x0/0x5f0)
[    0.000000]  r4:00000000 r3:00000000
[    0.000000] Code: e5903004 e3130001 e5903010 16ef1071 (018210b3)
[    0.000000] ---[ end trace 1b75b31a2719ed1e ]---
[    0.000000] Kernel panic - not syncing: Attempted to kill init!

I've bisected it down to this commit:

commit 78b017cab9338a015d8c20d6b1e35f276073a35a
Author: Benoit Cousson <b-cousson@ti.com>
Date:   Thu Nov 11 22:35:16 2010 +0100

    OMAP: mux: Add support for control module split in several partitions


Just reporting for now. I'll take a stab at fixing this tomorrow,
unless someone beats me to it.

- Anand

Re: linux-next 20101115 fails to boot on zoom3

[Tony Lindgren]

* Anand Gadiyar <gadiyar@ti.com> [101115 05:19]:
> Hi all,
> 
> Linux-next as of 20101115 fails to boot up on a zoom3. earlyprintk throws
> the following crash.
> 
> [    0.000000] MUX: Add partition: #1: core, flags: 0
> [    0.000000] Unable to handle kernel paging request at virtual address 01000268

I'll merge the following fix into Benoit's patch. Looks like hese patches
need still a bit more testing :)

Regards,

Tony


From: Tony Lindgren <tony@atomide.com>
Date: Mon, 15 Nov 2010 09:30:11 -0800
Subject: [PATCH] omap: mux: Fix omap_mux_write_array

Otherwise we can get:

MUX: Add partition: #1: core, flags: 0
Unable to handle kernel paging request at virtual address 01000268

Also fix a cosmetic issue in omap_mux_init while.

Signed-off-by: Tony Lindgren <tony@atomide.com>

--- a/arch/arm/mach-omap2/mux.c
+++ b/arch/arm/mach-omap2/mux.c
@@ -796,7 +796,7 @@ static void omap_mux_init_signals(struct omap_mux_partition *partition,
 				  struct omap_board_mux *board_mux)
 {
 	omap_mux_set_cmdline_signals();
-	omap_mux_write_array(partition->base, board_mux);
+	omap_mux_write_array(partition, board_mux);
 }
 
 #else
@@ -816,7 +816,7 @@ static void omap_mux_init_signals(struct omap_mux_partition *partition,
 
 static u32 mux_partitions_cnt;
 
-int __init omap_mux_init(const char * name, u32 flags,
+int __init omap_mux_init(const char *name, u32 flags,
 			 u32 mux_pbase, u32 mux_size,
 			 struct omap_mux *superset,
 			 struct omap_mux *package_subset,