Re: [PATCH] au1200fb: fix oops due to uninitialized fb_info.lock mutex
From: Krzysztof Helt <hidden>
Date: 2009-07-07 15:34:33
On Tue, 07 Jul 2009 10:29:51 +0200 Manuel Lauss [off-list ref] wrote:
commit 4148df9b0f38bdd362dd91d52076926c11cbe5a9 breaks au1200fb due to fb_info.lock now being uninitialized at the time of the register_frambuffer call: CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 8038ccd4, ra == 802412d4 Call Trace: [<8038ccd4>] __mutex_lock_slowpath+0x3c/0xe4 [<802412d4>] lock_fb_info+0x20/0x50 [<80242158>] register_framebuffer+0x264/0x2a4 [<8024f8c4>] au1200fb_drv_probe+0x308/0x444 [<80273ef8>] driver_probe_device+0xbc/0x184 [<8027402c>] __driver_attach+0x6c/0xa4 [<802736bc>] bus_for_each_dev+0x60/0xb0 [<80272e20>] bus_add_driver+0xc8/0x24c [<802743f4>] driver_register+0xdc/0x190 [<8047d130>] au1200fb_init+0x39c/0x3cc [<80100460>] _stext+0x60/0x1c8 [<8046f334>] kernel_init+0xc8/0x134 [<80106f64>] kernel_thread_helper+0x10/0x18 This band-aid fixes this oops.
Please wait a little. Currently, I, Paul Mundt and Linus discuss how to fix all drivers broken by the commit 4148df9b0f38bdd362dd91d52076. Kind regards, Krzysztof ---------------------------------------------------------------------- Sprawdz, czy wziac klapki, czy parasolke Pogoda na dzis, jutro i pojutrze >> http://link.interia.pl/f224d ------------------------------------------------------------------------------ Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/blackberry