GTA01: replace mutex with spinlock in neo1973_vib_vib_set

This function (set_brightness) may be called in interrupt context and
therefore should not sleep; use a spin_lock instead of a mutex to ensure
this.

This should take care of the following BUG:

[21474678.340000] BUG: sleeping function called from invalid context at kernel/mutex.c:207
[21474678.340000] in_atomic():1, irqs_disabled():0
[21474678.340000] no locks held by python/1255.
[21474678.340000] [<c002d928>] (dump_stack+0x0/0x18) from [<c003b08c>] (__might_sleep+0xdc/0xf8)
[21474678.340000] [<c003afb0>] (__might_sleep+0x0/0xf8) from [<c02efc08>] (mutex_lock_nested+0x2c/0x264)
[21474678.340000]  r5:c03ed754 r4:c03ed6dc
[21474678.340000] [<c02efbdc>] (mutex_lock_nested+0x0/0x264) from [<c022e180>] (neo1973_vib_vib_set+0x2c/0x6c)
[21474678.340000] [<c022e154>] (neo1973_vib_vib_set+0x0/0x6c) from [<c022e6a4>] (led_timer_function+0x8c/0xb4)
[21474678.340000]  r6:c041a1a0 r5:c7f34820 r4:0000012c
[21474678.340000] [<c022e618>] (led_timer_function+0x0/0xb4) from [<c004aeb4>] (run_timer_softirq+0x180/0x20c)
[21474678.340000]  r5:c7f3482c r4:00000102
[21474678.340000] [<c004ad34>] (run_timer_softirq+0x0/0x20c) from [<c0046368>] (__do_softirq+0x64/0xd8)
[21474678.340000]  r8:00000000 r7:00000001 r6:0000000a r5:c0419ff8 r4:00000041
[21474678.340000] [<c0046304>] (__do_softirq+0x0/0xd8) from [<c0046764>] (irq_exit+0x48/0x5c)
[21474678.340000]  r6:00000000 r5:c03d128c r4:0000001e
[21474678.340000] [<c004671c>] (irq_exit+0x0/0x5c) from [<c0028050>] (__exception_text_start+0x50/0x68)
[21474678.340000] [<c0028000>] (__exception_text_start+0x0/0x68) from [<c0028a8c>] (__irq_usr+0x4c/0xe0)
[21474678.340000] Exception stack(0xc7d7bfb0 to 0xc7d7bff8)
[21474678.340000] bfa0:                                     0055bb3a 0000004a 00000000 0055baf0
[21474678.340000] bfc0: 0000004a 0052ae30 00000025 005168e0 00000073 00000025 401281ec 00000000
[21474678.340000] bfe0: 0000006f be9b8470 006e0069 400a8844 60000010 ffffffff
[21474678.340000]  r6:00004000 r5:f4000000 r4:ffffffff

Signed-off-by: Jonas Bonn <jonas.bonn@gmail.com>

0 files changed, 0 insertions, 0 deletions