On 02/25/2016 07:11 PM, Greg KH wrote:
> On Thu, Feb 25, 2016 at 05:23:04PM -0500, Murali Karicheri wrote:
>> Recent update to pcie-designware core driver,
>> commit "cbce79005 PCI: designware: Make driver arch-agnostic" broke the
>> keystone PCI driver. This is because, the way pp struct ptr is retrieved
>> from msi desc has changed and require similar update in pci-keystone-dw.c
>> as well. This patch fix this issue. Here is the early boot crash log seen
>> on K2E EVM.
>>
>> [ 1.012999] pci 0000:00:00.0: PCI bridge to [bus 01]
>> [ 1.018073] pci 0000:00:00.0: bridge window [io 0x1000-0x1fff]
>> [ 1.024308] pci 0000:00:00.0: bridge window [mem 0x60000000-0x600fffff]
>> [ 1.031216] pci 0000:00:00.0: bridge window [mem 0x60100000-0x601fffff
>> pref]
>> [ 1.038736] Unable to handle kernel NULL pointer dereference at virtual
>> address 00000030
>> [ 1.046950] pgd = c0003000
>> [ 1.049750] [00000030] *pgd=80000800004003, *pmd=00000000
>> [ 1.055265] Internal error: Oops: 206 [#1] PREEMPT SMP ARM
>> [ 1.060860] Modules linked in:
>> [ 1.064013] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.2-00139-gb74f926 #2
>> [ 1.071266] Hardware name: Keystone
>> [ 1.074853] task: eb888000 ti: eb890000 task.ti: eb890000
>> [ 1.080364] PC is at ks_dw_pcie_msi_irq_unmask+0x24/0x58
>> [ 1.085785] LR is at ks_dw_pcie_msi_irq_unmask+0x18/0x58
>> [ 1.091206] pc : [<c02f65c8>] lr : [<c02f65bc>] psr: 60000093
>> [ 1.091206] sp : eb891bc8 ip : 00000000 fp : ebb15010
>> [ 1.102915] r10: 00000051 r9 : 60000013 r8 : ebafaa20
>> [ 1.108247] r7 : ebaa9f80 r6 : eb9fd0c0 r5 : ebafa9d0 r4 : ebafa9c0
>> [ 1.114889] r3 : 00000051 r2 : 00000000 r1 : 00000001 r0 : ebb14c18
>> [ 1.121533] Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment
>> kernel
>> [ 1.129049] Control: 30c5387d Table: 00003000 DAC: fffffffd
>> [ 1.134905] Process swapper/0 (pid: 1, stack limit = 0xeb890210)
>> [ 1.141023] Stack: (0xeb891bc8 to 0xeb892000)
>>
>> Signed-off-by: Murali Karicheri <m-karicheri2@xxxxxx>
>> ---
>> - Need this fix in 4.4.4 as well
>
> <formletter>
>
> This is not the correct way to submit patches for inclusion in the
> stable kernel tree. Please read Documentation/stable_kernel_rules.txt
> for how to do this properly.
>
> </formletter>
>
I misremembered it. I am following option 1) and only thing missing is
========================================================================
To have the patch automatically included in the stable tree, add the tag
Cc: stable@xxxxxxxxxxxxxxx
in the sign-off area.
=========================================================================
I will add Cc in the sign-off area and send v1.
--
Murali Karicheri
Linux Kernel, Keystone
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