On Wed, Jul 30, 2014 at 07:27:38PM +0800, Nicolin Chen wrote:
> The Freescale Generic ASoC Sound Card is a general ASoC DAI Link driver that
> can be used, ideally, for all Freescale CPU DAI drivers and external CODECs.
Applied, thanks.
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The PCI devices that have been passed through are enabled before
reset, we need restore to the enabled state after reset. Otherwise,
MMIO access might be issued to disabled devices after reset and
causes exceptional recursive EEH error.
Signed-off-by: Gavin Shan
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arch/powerpc/kernel/eeh.c | 6
The patch adds sysfs entry "eeh_pe_state". Reading on it returns
the PE's state while writing to it clears the frozen state. It's
used to check or clear the PE frozen state from userland for
debugging purpose.
The patch also replaces printk(KERN_WARNING ...) with pr_warn() in
eeh_sysfs.c
Signed-o
eeh_check_failure() is used to check frozen state of the PE which
owns the indicated I/O address. The argument "val" of the function
isn't used. The patch drops it and return the frozen state of the
PE as expected.
Cc: Vishal Mansur
Signed-off-by: Gavin Shan
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arch/powerpc/include/asm/eeh.h |
When passing through device, its PE might have been put into frozen
state. One obvious example would be: the passed PE is forced to be
offline because of hitting maximal allowed EEH errors in userland.
In that case, the frozen state won't be cleared and then the PE is
returned back to host, which m
The patch adds one more option (EEH_OPT_FREEZE_PE) to set_option()
method to proactively freeze PE, which will be issued before resetting
pass-throughed PE to drop MMIO access during reset because it's
always contributing to recursive EEH error.
Signed-off-by: Gavin Shan
---
arch/powerpc/include
The series of patches is to fix recursive EEH error during recovery
for VFIO-PCI except some cleanup. The recursive EEH error is caused
by MMIO access when the PE is under reset or the PCI device isn't
enabled yet. The solution is to freeze the PE until the PCI device
is enabled after PE reset.
An
