"Govindraj.R" <govindraj.raja@xxxxxx> writes: > This patch ensures that if a particular uart clock node > was not acquired then do not proceed with enabling clock > and device registration for that uart. > > Without this patch if uart_ick/fck value was null > then it throw oops as below and boot will halt. > > <1>Unable to handle kernel NULL pointer dereference at virtual address 0000001c > <1>pgd = c0004000 > <1>[0000001c] *pgd=00000000 > <0>Internal error: Oops: 5 [#1] > <0>last sysfs file: > <d>Modules linked in: > CPU: 0 Not tainted (2.6.34-rc3-00006-g7da06f1-dirty #15) > PC is at omap_serial_init_port+0x64/0x3a0 > LR is at 0x8 > pc : [<c000f51c>] lr : [<00000008>] psr: 60000013 > sp : dfc2bf80 ip : 00000000 fp : 00000000 > r10: 000007c8 r9 : c05c65f8 r8 : 00000000 > r7 : c05c6dc0 r6 : c000b44c r5 : 00000000 r4 : 00000004 > r3 : 00000007 r2 : c05c6538 r1 : fb020000 r0 : c05c6dc0 > Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel > Control: 10c5387f Table: 80004019 DAC: 00000017 > <0>Process swapper (pid: 1, stack limit = 0xdfc2a2f0) > <0>Stack: (0xdfc2bf80 to 0xdfc2c000) > <0>bf80: 00000003 fb020000 00000004 00000000 c000b44c 00000000 00000000 00000000 > <0>bfa0: 00000000 c000f880 c002e288 c00135e0 c002e288 c00137f4 c002e288 c000b464 > <0>bfc0: c002e288 c003e34c 00000031 00000000 00000000 00000192 00000000 c002e288 > <0>bfe0: 00000000 00000000 00000000 c0008578 00000000 c003f970 ffffffff ffffffff > [<c000f51c>] (omap_serial_init_port+0x64/0x3a0) from [<c000f880>] (omap_serial_init+0x28/0x3c) > [<c000f880>] (omap_serial_init+0x28/0x3c) from [<c00135e0>] (zoom_peripherals_init+0x44/0x6c) > [<c00135e0>] (zoom_peripherals_init+0x44/0x6c) from [<c00137f4>] (omap_sdp_init+0x14/0x54) > [<c00137f4>] (omap_sdp_init+0x14/0x54) from [<c000b464>] (customize_machine+0x18/0x24) > [<c000b464>] (customize_machine+0x18/0x24) from [<c003e34c>] (do_one_initcall+0x5c/0x1b8) > [<c003e34c>] (do_one_initcall+0x5c/0x1b8) from [<c0008578>] (kernel_init+0x90/0x144) > [<c0008578>] (kernel_init+0x90/0x144) from [<c003f970>] (kernel_thread_exit+0x0/0x8) > <0>Code: eb00ef8f e597c06c e3a0e008 e3a03007 (e5dc201c) > <4>---[ end trace 1b75b31a2719ed1c ]--- > <0>Kernel panic - not syncing: Attempted to kill init! > > Cc: Tony Lindgren <tony@xxxxxxxxxxx> > Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> > Reported-by: Venkatraman S <svenkatr@xxxxxx> > Signed-off-by: Govindraj.R <govindraj.raja@xxxxxx> Acked-by: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> Should be queued for -fixes. Kevin -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
