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| Filename | Latest commit message | Latest commit date |
|---|---|---|
303529d6ef
The root port or PCIe switch downstream port might have been associated
with driver other than pnv-php. The MSI or MSIx might also have been
enabled by that driver (e.g. pcieport_drv). Attempt to enable MSI incurs
below backtrace:
PowerPC PowerNV PCI Hotplug Driver version: 0.1
------------[ cut here ]------------
WARNING: CPU: 19 PID: 1004 at drivers/pci/msi.c:1071 \
__pci_enable_msi_range+0x84/0x4e0
NIP [c000000000665c34] __pci_enable_msi_range+0x84/0x4e0
LR [c000000000665c24] __pci_enable_msi_range+0x74/0x4e0
Call Trace:
[c000000384d67600] [c000000000665c24] __pci_enable_msi_range+0x74/0x4e0
[c000000384d676e0] [d00000000aa31b04] pnv_php_register+0x564/0x5a0 [pnv_php]
[c000000384d677c0] [d00000000aa31658] pnv_php_register+0xb8/0x5a0 [pnv_php]
[c000000384d678a0] [d00000000aa31658] pnv_php_register+0xb8/0x5a0 [pnv_php]
[c000000384d67980] [d00000000aa31dfc] pnv_php_init+0x60/0x98 [pnv_php]
[c000000384d679f0] [c00000000000cfdc] do_one_initcall+0x6c/0x1d0
[c000000384d67ab0] [c000000000b92354] do_init_module+0x94/0x254
[c000000384d67b40] [c00000000019719c] load_module+0x258c/0x2c60
[c000000384d67d30] [c000000000197bb0] SyS_finit_module+0xf0/0x170
[c000000384d67e30] [c00000000000b184] system_call+0x38/0xe0
This fixes the issue by skipping enabling the surprise hotplug
capability if the MSI or MSIx on the PCI slot's upstream port has
been enabled by other driver.
Cc: <stable@vger.kernel.org> # v4.9+
Fixes:
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.