# git rev-parse -q --verify 13a83eac373c49c0a081cbcd137e79210fe78acd^{commit}
13a83eac373c49c0a081cbcd137e79210fe78acd
already have revision, skipping fetch
# git checkout -q -f -B kisskb 13a83eac373c49c0a081cbcd137e79210fe78acd
# git clean -qxdf
# < git log -1
# commit 13a83eac373c49c0a081cbcd137e79210fe78acd
# Author: Michael Neuling <mikey@neuling.org>
# Date:   Wed Apr 11 13:37:58 2018 +1000
# 
#     powerpc/eeh: Fix enabling bridge MMIO windows
#     
#     On boot we save the configuration space of PCIe bridges. We do this so
#     when we get an EEH event and everything gets reset that we can restore
#     them.
#     
#     Unfortunately we save this state before we've enabled the MMIO space
#     on the bridges. Hence if we have to reset the bridge when we come back
#     MMIO is not enabled and we end up taking an PE freeze when the driver
#     starts accessing again.
#     
#     This patch forces the memory/MMIO and bus mastering on when restoring
#     bridges on EEH. Ideally we'd do this correctly by saving the
#     configuration space writes later, but that will have to come later in
#     a larger EEH rewrite. For now we have this simple fix.
#     
#     The original bug can be triggered on a boston machine by doing:
#       echo 0x8000000000000000 > /sys/kernel/debug/powerpc/PCI0001/err_injct_outbound
#     On boston, this PHB has a PCIe switch on it.  Without this patch,
#     you'll see two EEH events, 1 expected and 1 the failure we are fixing
#     here. The second EEH event causes the anything under the PHB to
#     disappear (i.e. the i40e eth).
#     
#     With this patch, only 1 EEH event occurs and devices properly recover.
#     
#     Fixes: 652defed4875 ("powerpc/eeh: Check PCIe link after reset")
#     Cc: stable@vger.kernel.org # v3.11+
#     Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>
#     Signed-off-by: Michael Neuling <mikey@neuling.org>
#     Acked-by: Russell Currey <ruscur@russell.cc>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 13a83eac373c49c0a081cbcd137e79210fe78acd
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_sbc8548_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  85xx/sbc8548_defconfig
# make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_sbc8548_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:340:21: note: 'pdeo' was declared here
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here
arch/powerpc/boot/sbc8548.dtb: Warning (pci_bridge): /pcie@e000a000/pcie@0: missing bus-range for PCI bridge
arch/powerpc/boot/sbc8548.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge'
INFO: Uncompressed kernel (size 0x447f8c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
INFO: Uncompressed kernel (size 0x437980) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Image Name:   Linux-4.17.0-rc1-g13a83ea
Created:      Thu Apr 19 18:00:48 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2133958 Bytes = 2083.94 kB = 2.04 MB
Load Address: 00000000
Entry Point:  00000000
Image Name:   Linux-4.17.0-rc1-g13a83ea
Created:      Thu Apr 19 18:00:48 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2158086 Bytes = 2107.51 kB = 2.06 MB
Load Address: 00500000
Entry Point:  00500248
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_85xx_sbc8548_defconfig_powerpc
# Build took: 0:00:40.270909