| Commit message (Collapse) | Author | Age | Files | Lines |
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/i7core
* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/i7core: (34 commits)
i7core_edac: return -ENODEV when devices were already probed
i7core_edac: properly terminate pci_dev_table
i7core_edac: Avoid PCI refcount to reach zero on successive load/reload
i7core_edac: Fix refcount error at PCI devices
i7core_edac: it is safe to i7core_unregister_mci() when mci=NULL
i7core_edac: Fix an oops at i7core probe
i7core_edac: Remove unused member channels in i7core_pvt
i7core_edac: Remove unused arg csrow from get_dimm_config
i7core_edac: Reduce args of i7core_register_mci
i7core_edac: Introduce i7core_unregister_mci
i7core_edac: Use saved pointers
i7core_edac: Check probe counter in i7core_remove
i7core_edac: Call pci_dev_put() when alloc_i7core_dev() failed
i7core_edac: Fix error path of i7core_register_mci
i7core_edac: Fix order of lines in i7core_register_mci
i7core_edac: Always do get/put for all devices
i7core_edac: Introduce i7core_pci_ctl_create/release
i7core_edac: Introduce free_i7core_dev
i7core_edac: Introduce alloc_i7core_dev
i7core_edac: Reduce args of i7core_get_onedevice
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Due to the nature of i7core, we need to probe and attach all PCI
devices used by this driver during the first time probe is called.
However, PCI core will call the probe routine one time for each CPU
socket. If we return -EINVAL to those calls, it would seem that the
driver fails, when, in fact, there's no more devices left to initialize.
Changing the return code to -ENODEV solves this issue.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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At pci_xeon_fixup(), it waits for a null-terminated table, while at
i7core_get_all_devices, it just do a for 0..ARRAY_SIZE. As other tables
are zero-terminated, change it to be terminate with 0 as well, and fixes
a bug where it may be running out of the table elements.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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That's a nasty bug that took me a lot of time to track, and whose
solution took just one line to solve. The best fragrances and the worse
poisons are shipped on the smalest bottles.
The drivers/pci/quick.c implements the pci_get_device function. The normal
behavior is that you call it, the function returns you a pdev pointer
and increment pdev->kobj.kref.refcount of the pci device. However,
if you want to keep searching an object, you need to pass the previous
pdev function to the search.
When you use a not null pointer to pdev "from" field, pci_get_device
will decrement pdev->kobj.kref.refcount, assuming that the driver won't
be using the previous pdev.
The solution is simple: we just need to call pci_dev_get() manually,
for the pdev's that the driver will actually use.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Probably due to a bug or some testing logic at PCI level, device
refcount for <bus>:00.0 device is decremented at the end of the
pci_get_device, made by i7core_get_all_devices(). The fact is that
the first versions of the driver relied on those devices to probe
for Nehalem, but the current versions don't use it at all.
So, let's just remove those devices from the driver, making it simpler
and fixing the bug.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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i7core_unregister_mci() checks internally when mci=NULL. There's no
need to test it outside.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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changeset c91d57ba9ce5b5c93a7077e2f72510eb1f9131c4 moved the init
of the priv pointer to the end of the probe routine. However, we need
them before that, otherwise, we hit an OOPS:
[ 67.743453] EDAC DEBUG: mci_bind_devs: Associated fn 0.0, dev = ffff88011b46e000, socket 0
[ 67.751861] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
[ 67.759685] IP: [<ffffffffa017e484>] i7core_probe+0x979/0x130c [i7core_edac]
[ 67.766721] PGD 10bd38067 PUD 10bd37067 PMD 0
[ 67.771178] Oops: 0000 [#1] SMP
[ 67.774414] last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map
[ 67.782213] CPU 1
[ 67.784042] Modules linked in: i7core_edac(+) edac_core cpufreq_ondemand binfmt_misc dm_multipath video output pci_slot snd_hda_codd
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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A local is enough.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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We can check the number of channels in i7core_register_mci.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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In i7core_probe, when setup of mci for 2nd or later socket failed,
we should cleanup prepared mci for 1st socket or so before "put" of
all devices.
So let have i7core_unregister_mci that can be shared between here
and i7core_remove.
While here fix a typo "hanler".
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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We already have saved pointers. Use shorter ones.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Prevent i7core_remove from running multiple times.
Otherwise value proved will be negative and something will be wrong.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Release resources properly.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The flag is_registered is not initialized until mci_bind_devs()
is called. Refer it properly.
The mci->dev and mci->edac_check is required in edac_mc_add_mc(),
so prepare them just before the call.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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We already do 'get' for all sockets at once. So do 'put' in the
same way.
And let args of the 'get' function to void since it handles
only the single, static and known size table pci_dev_table[].
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Have a couple of method.
while here sort out lines in the i7core_register_mci() a bit.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Have a method to make a couple with alloc_i7core_dev() previously
introduced. Using in pair will help proper resource handling.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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It's nice to have a method for a single purpose.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Since we need to pass the index of the entry, pass the table itself
instead of passing individual members of the table.
While here make it static.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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commit 47251b4d960bdfa648b0d06dbc6d445f41cb3906 have changed
the logic for unexplained reasons. It looks strange that it
can release i7core_dev without calling i7core_put_devices()
that releases i7core_dev->pdev.
Fix the part.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The legacy PCI probe sometimes cause hangs. Better to have it
disabled by default, and have a parameter to enable it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This is a nasty bug. Since kobject count will be reduced by zero by
edac_mc_del_mc(), and this triggers the kobj release method, the
mci memory will be freed automatically. So, all we have left is ctl_name,
as shown by enabling debug:
[ 80.822186] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1020: edac_remove_sysfs_mci_device() remove_link
[ 80.832590] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1024: edac_remove_sysfs_mci_device() remove_mci_instance
[ 80.843776] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 640: edac_mci_control_release() mci instance idx=0 releasing
[ 80.855163] EDAC MC: Removed device 0 for i7core_edac.c i7 core #0: DEV 0000:3f:03.0
[ 80.862936] EDAC DEBUG: in drivers/edac/i7core_edac.c, line at 2089: (null): free structs
[ 80.871134] EDAC DEBUG: in drivers/edac/edac_mc.c, line at 238: edac_mc_free()
[ 80.878379] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 726: edac_mc_unregister_sysfs_main_kobj()
[ 80.888043] EDAC DEBUG: in drivers/edac/i7core_edac.c, line at 1232: drivers/edac/i7core_edac.c: i7core_put_devices()
Also, kfree(mci) shouldn't happen at the kobj.release, as it happens
when edac_remove_sysfs_mci_device() is called, but the logic is:
edac_remove_sysfs_mci_device(mci);
edac_printk(KERN_INFO, EDAC_MC,
"Removed device %d for %s %s: DEV %s\n", mci->mc_idx,
mci->mod_name, mci->ctl_name, edac_dev_name(mci));
So, as the edac_printk() needs the mci struct, this generates an OOPS.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This is important to track a nasty bug at the free logic.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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A very nasty bug were happening on edac core, due to the way mci objects are
freed. mci memory is freed when kobject count reaches zero, by
edac_mci_control_release(). However, from the logs, this is clearly happening
before the final usage of mci struct:
[15799.607454] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 640: edac_mci_control_release() mci instance idx=0 releasing
[15799.618773] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 769: edac_inst_grp_release()
[15799.627326] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 894: edac_remove_mci_instance_attributes() end of seeking for group all_channel_counts
[15799.640887] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 877: edac_remove_mci_instance_attributes() sysfs_attrib = ffffffffa01d7240
[15799.653412] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1020: edac_remove_sysfs_mci_device() remove_link
[15799.663753] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1024: edac_remove_sysfs_mci_device() remove_mci_instance
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Make sure we remove groups at the right order
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Otherwise, a NMI may happen causing a race condition and a panic.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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There are two groups of sysfs attributes: one for rdimm and another
for udimm. Instead of changing dynamically the unique static struct
for handling udimm's, declare two vars and make them constant.
This avoids the risk of having two or more memory controllers, each
needing a different set of attributes.
While here, use const on all places where it is applicable.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
edac_core: use const for constant sysfs arguments
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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While here, don't initialize probed with 0.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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With multi-sockets, more than one edac pci handler is enabled. Be sure to
un-register all instances.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
Update broken web addresses in arch directory.
Update broken web addresses in the kernel.
Revert "drivers/usb: Remove unnecessary return's from void functions" for musb gadget
Revert "Fix typo: configuation => configuration" partially
ida: document IDA_BITMAP_LONGS calculation
ext2: fix a typo on comment in ext2/inode.c
drivers/scsi: Remove unnecessary casts of private_data
drivers/s390: Remove unnecessary casts of private_data
net/sunrpc/rpc_pipe.c: Remove unnecessary casts of private_data
drivers/infiniband: Remove unnecessary casts of private_data
drivers/gpu/drm: Remove unnecessary casts of private_data
kernel/pm_qos_params.c: Remove unnecessary casts of private_data
fs/ecryptfs: Remove unnecessary casts of private_data
fs/seq_file.c: Remove unnecessary casts of private_data
arm: uengine.c: remove C99 comments
arm: scoop.c: remove C99 comments
Fix typo configue => configure in comments
Fix typo: configuation => configuration
Fix typo interrest[ing|ed] => interest[ing|ed]
Fix various typos of valid in comments
...
Fix up trivial conflicts in:
drivers/char/ipmi/ipmi_si_intf.c
drivers/usb/gadget/rndis.c
net/irda/irnet/irnet_ppp.c
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The patch below updates broken web addresses in the kernel
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Dimitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Acked-by: Ben Pfaff <blp@cs.stanford.edu>
Acked-by: Hans J. Koch <hjk@linutronix.de>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/edac
* 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/edac: (25 commits)
i7300_edac: Properly initialize per-csrow memory size
V4L/DVB: i7300_edac: better initialize page counts
MAINTAINERS: Add maintainer for i7300-edac driver
i7300-edac: CodingStyle cleanup
i7300_edac: Improve comments
i7300_edac: Cleanup: reorganize the file contents
i7300_edac: Properly detect channel on CE errors
i7300_edac: enrich FBD error info for corrected errors
i7300_edac: enrich FBD error info for fatal errors
i7300_edac: pre-allocate a buffer used to prepare err messages
i7300_edac: Fix MTR x4/x8 detection logic
i7300_edac: Make the debug messages coherent with the others
i7300_edac: Cleanup: remove get_error_info logic
i7300_edac: Add a code to cleanup error registers
i7300_edac: Add support for reporting FBD errors
i7300_edac: Properly detect the type of error correction
i7300_edac: Detect if the device is on single mode
i7300_edac: Adds detection for enhanced scrub mode on x8
i7300_edac: Clear the error bit after reading
i7300_edac: Add error detection code for global errors
...
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Due to the current edac-core limits, we cannot represent a per-channel
memory size, for FB-DIMM drivers. So, we need to sum-up all values
for each slot, in order to properly represent the total amount of
memory found by the i7300 driver.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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It is still somewhat fake, as the pages may not be on this exact order,
and may even be used in mirror mode, but this is a best guess than the
other random fake values.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This is basically a cleanup patch, improving the comments for each
function.
While here, do a few cleanups.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This change should do no functional change. It just rearranges the
contents of the c file, in order to make easier to understand and
maintain it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Instead of dynamically allocating a buffer for it where needed,
just allocate it once. As we'll use the same buffer also during
fatal and non-fatal errors, is is very risky to dynamically allocate
it during an error.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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As the error logic in this driver came from i5400 driver, it
were using one function to get errors, and another to display.
Let's make it simpler and avoid doing it into two steps.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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