Looks like the ads7846 driver breaks suspend-to-ram at least on the OMAP 3430SDP. On a kernel built with the omap3_defconfig, with no_console_suspend, I see the log below. Will investigate some time next week, unless someone already has a fix. - Anand # echo mem > /sys/power/state [ 73.199005] PM: Syncing filesystems ... done. [ 73.253479] Freezing user space processes ... (elapsed 0.01 seconds) done. [ 73.277984] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. [ 73.321014] ------------[ cut here ]------------ [ 73.325714] WARNING: at kernel/lockdep.c:2820 __lock_acquire+0x3e8/0x1780() [ 73.332702] Modules linked in: [ 73.335815] [<c0045380>] (unwind_backtrace+0x0/0xe4) from [<c0072ecc>] (warn_slowpath_common+0x48/0x60) [ 73.345306] [<c0072ecc>] (warn_slowpath_common+0x48/0x60) from [<c00981b0>] (__lock_acquire+0x3e8/0x1780) [ 73.354919] [<c00981b0>] (__lock_acquire+0x3e8/0x1780) from [<c00995a8>] (lock_acquire+0x60/0x74) [ 73.363861] [<c00995a8>] (lock_acquire+0x60/0x74) from [<c0414964>] (_raw_spin_lock_irq+0x38/0x70) [ 73.372894] [<c0414964>] (_raw_spin_lock_irq+0x38/0x70) from [<c02cd444>] (ads7846_suspend+0x18/0x48) [ 73.382202] [<c02cd444>] (ads7846_suspend+0x18/0x48) from [<c026c330>] (spi_suspend+0x28/0x34) [ 73.390869] [<c026c330>] (spi_suspend+0x28/0x34) from [<c02314fc>] (legacy_suspend+0x2c/0x64) [ 73.399444] [<c02314fc>] (legacy_suspend+0x2c/0x64) from [<c0231d78>] (__device_suspend+0xf0/0x128) [ 73.408569] [<c0231d78>] (__device_suspend+0xf0/0x128) from [<c02320cc>] (dpm_suspend_start+0x31c/0x454) [ 73.418121] [<c02320cc>] (dpm_suspend_start+0x31c/0x454) from [<c00a3d08>] (suspend_devices_and_enter+0x48/0x1d8) [ 73.428466] [<c00a3d08>] (suspend_devices_and_enter+0x48/0x1d8) from [<c00a3f54>] (enter_state+0xbc/0x120) [ 73.438171] [<c00a3f54>] (enter_state+0xbc/0x120) from [<c00a36a8>] (state_store+0xa4/0xb8) [ 73.446594] [<c00a36a8>] (state_store+0xa4/0xb8) from [<c01e4cd8>] (kobj_attr_store+0x18/0x1c) [ 73.455291] [<c01e4cd8>] (kobj_attr_store+0x18/0x1c) from [<c0125190>] (sysfs_write_file+0x10c/0x144) [ 73.464569] [<c0125190>] (sysfs_write_file+0x10c/0x144) from [<c00dbb30>] (vfs_write+0xb0/0x148) [ 73.473419] [<c00dbb30>] (vfs_write+0xb0/0x148) from [<c00dbc78>] (sys_write+0x3c/0x68) [ 73.481506] [<c00dbc78>] (sys_write+0x3c/0x68) from [<c003f920>] (ret_fast_syscall+0x0/0x3c) [ 73.489990] ---[ end trace 1b75b31a2719ed1f ]--- [ 73.494995] Unable to handle kernel NULL pointer dereference at virtual address 00000073 [ 73.503204] pgd = c7fb8000 [ 73.505920] [00000073] *pgd=87f93031, *pte=00000000, *ppte=00000000 [ 73.512298] Internal error: Oops: 17 [#1] [ 73.516357] last sysfs file: /sys/devices/virtual/vc/vcsa63/dev [ 73.522308] Modules linked in: [ 73.525390] CPU: 0 Tainted: G W (2.6.34-rc7-08103-g20124b7-dirty #3) [ 73.532836] PC is at ads7846_suspend+0x24/0x48 [ 73.537322] LR is at _raw_spin_unlock_irq+0x24/0x2c [ 73.542236] pc : [<c02cd450>] lr : [<c04150b8>] psr: 60000013 [ 73.542236] sp : c7fabe70 ip : 80000093 fp : 00000000 [ 73.553771] r10: c7ccc47c r9 : 00000049 r8 : c026c308 [ 73.559051] r7 : 00000000 r6 : 00000000 r5 : c7eaa3e4 r4 : c7eaa000 [ 73.565612] r3 : ffffffff r2 : c7fabe58 r1 : 00000000 r0 : c04150b8 [ 73.572174] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 73.579345] Control: 10c5387d Table: 87fb8019 DAC: 00000015 [ 73.585144] Process sh (pid: 632, stack limit = 0xc7faa2f0) [ 73.590759] Stack: (0xc7fabe70 to 0xc7fac000) [ 73.595153] be60: c02cd42c 00000002 c7ccc400 c026c330 [ 73.603363] be80: 00000000 c02314fc c7ccc400 00000002 00000000 00000000 c7ccc400 00000002 [ 73.611602] bea0: c7ccc434 00000002 20507908 c0231d78 c7ccc400 00000002 00000000 00000000 [ 73.619842] bec0: c7ccc400 00000000 00000002 c02320cc 20507908 00000049 c7ccc07c c7f9947c [ 73.628082] bee0: 00000000 003fffff 00000003 00000004 c05088e9 c0436d6c c7ed6358 c00a3d08 [ 73.636322] bf00: c05088e9 00000003 00000000 c00a3f54 c7c6e000 00000003 00000003 c00a36a8 [ 73.644531] bf20: c7c14ac8 c7fabf80 c7c01b00 c7ed6340 00000004 c01e4cd8 00000004 c0125190 [ 73.652770] bf40: 00000004 c7edc080 4001f000 c7fabf80 00000000 00000000 00000000 c00dbb30 [ 73.661010] bf60: c7edc080 4001f000 c7edc080 4001f000 00000004 00000004 00000000 c00dbc78 [ 73.669250] bf80: 00000000 00000000 00000004 00000000 00000004 4001f000 401f95e8 c003fae8 [ 73.677490] bfa0: c7faa000 c003f920 00000004 4001f000 00000001 4001f000 00000004 00000000 [ 73.685699] bfc0: 00000004 4001f000 401f95e8 00000004 00000004 000dc2ac 00000000 00000000 [ 73.693939] bfe0: 4001f000 bedde618 401396dc 40189fec 60000010 00000001 81ffe021 81ffe421 [ 73.702178] [<c02cd450>] (ads7846_suspend+0x24/0x48) from [<c026c330>] (spi_suspend+0x28/0x34) [ 73.710876] [<c026c330>] (spi_suspend+0x28/0x34) from [<c02314fc>] (legacy_suspend+0x2c/0x64) [ 73.719451] [<c02314fc>] (legacy_suspend+0x2c/0x64) from [<c0231d78>] (__device_suspend+0xf0/0x128) [ 73.728576] [<c0231d78>] (__device_suspend+0xf0/0x128) from [<c02320cc>] (dpm_suspend_start+0x31c/0x454) [ 73.738128] [<c02320cc>] (dpm_suspend_start+0x31c/0x454) from [<c00a3d08>] (suspend_devices_and_enter+0x48/0x1d8) [ 73.748443] [<c00a3d08>] (suspend_devices_and_enter+0x48/0x1d8) from [<c00a3f54>] (enter_state+0xbc/0x120) [ 73.758178] [<c00a3f54>] (enter_state+0xbc/0x120) from [<c00a36a8>] (state_store+0xa4/0xb8) [ 73.766601] [<c00a36a8>] (state_store+0xa4/0xb8) from [<c01e4cd8>] (kobj_attr_store+0x18/0x1c) [ 73.775268] [<c01e4cd8>] (kobj_attr_store+0x18/0x1c) from [<c0125190>] (sysfs_write_file+0x10c/0x144) [ 73.784545] [<c0125190>] (sysfs_write_file+0x10c/0x144) from [<c00dbb30>] (vfs_write+0xb0/0x148) [ 73.793395] [<c00dbb30>] (vfs_write+0xb0/0x148) from [<c00dbc78>] (sys_write+0x3c/0x68) [ 73.801483] [<c00dbc78>] (sys_write+0x3c/0x68) from [<c003f920>] (ret_fast_syscall+0x0/0x3c) [ 73.809967] Code: eb051d39 e1a00005 eb051f11 e5943044 (e5d32074) [ 73.816375] ---[ end trace 1b75b31a2719ed20 ]----- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
