The BUG_ON() in this function can never happen.
For aesthetics, rename this CamelCase inline function and convert it into
a simple macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The BUG_ON() in this function can never happen.
For aesthetics, rename this CamelCase inline function and convert it into
a simple macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The BUG_ON() in this function can never happen.
For aesthetics, rename this CamelCase inline function and convert it into
a simple macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The BUG_ON() in this function can never happen.
For aesthetics, rename this CamelCase inline function and convert it into
a simple macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The BUG_ON() in this function can never happen.
For aesthetics, rename this CamelCase inline function and convert it into
a simple macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The BUG_ON() in this function can never happen.
For aesthetics, rename this CamelCase inline function and convert it into
a simple macro.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rename some of the local vars and tidy up this function to fix to
fix a couple > 80 char line issues.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rename some of the local vars and tidy up this function to fix to
fix a couple > 80 char line issues.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rename some of the local vars and tidy up this function to fix to
fix a couple > 80 char line issues.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The enum ni_gpct_variant is used to handle hardware variations in the
gpct timers handled by this driver. This enum is defined as:
enum ni_gpct_variant {
ni_gpct_variant_e_series,
ni_gpct_variant_m_series,
ni_gpct_variant_660x
};
For all the switch statements where all three enum values are handled,
remove the unreachable BUG(). Move the default case so it is handled
the same as ni_gpct_variant_e_series.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix the whitespace in some of the function declarations to avoid
the ugly line breaks and fix a couple checkpatch.pl issues:
WARNING: line over 80 characters
WARNING: Unnecessary space before function pointer arguments
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tidy up some of the comments to fix some fo the the checkpatch.pl
warnings:
WARNING: line over 80 characters
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The comedi core expects the (*insn_read) operations to read insn->n
values and return the number of values read.
Fix this function to work line the core expects.
For aesthetics, factor out the code that reads the SM_Save_Reg.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch introduces the use of devm_kzalloc and does away with the
kfrees in the probe and remove functions. A label and the kfree
being called on the return path of failure on i2c_check_functionality,
which is completely unnecessary and removed. The NULL assignment of
ddata is no longer required is also done away with.
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This code corrects endianness and avoids a sparse error.
Tested with Lattice ECP3-35 with Freescale i.MX6.
It also sends uevent in order to load it.
Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@vodalys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 8250_dw driver fails to probe if the specified clock isn't
registered at probe time. Even if a clock frequency is given,
the required clock might be gated because it wasn't properly
enabled.
This happened to me when the device is registered through DT,
and the clock was part of an MFD, the PRCM found on A31 and A23
SoCs. Unlike core clocks that are registered with OF_CLK_DECLARE,
which happen almost immediately after the kernel starts, the
clocks are registered as sub-devices of the PRCM MFD platform
device. Even though devices are registered in the order they are
found in the DT, the drivers are registered in a different,
arbitrary order. It is possible that the 8250_dw driver is
registered, and thus associated with the device and probed, before
the clock driver is registered and probed.
8250_dw then reports unable to get the clock, and fails. Without
a working console, the kernel panics.
This patch adds support for deferred probe handling for the clock
and reset controller. It also fixes the cleanup path if
serial8250_register_8250_port fails.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Allwinner A31 and A23 SoCs have a reset controller
maintaining the UART in reset by default.
This patch adds optional reset support to the driver.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the current calculation, if the required baud rate is above 262143,
we get an overflow.
This patch uses a 64bits variable to do the maths.
Also, we remove the '+1' to avoid a divide by zero if the input clock
rate is something unexpected.
Indeed, if the input clock rate is zero, it is preferable to be notified,
since the UART won't work anyway.
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In order to prevent an asc instance to be used as early console, BUG_ON is
used on either mapbase or membase being NULL.
Problem is that this condition is also true when we set console to be a ttyASx
different to the first asc instance being probed.
Instead of calling BUG_ON, it now returns -ENXIO when either mapbase or
membase is NULL.
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull perf fixes from Thomas Gleixner:
"A bunch of fixes for perf and kprobes:
- revert a commit that caused a perf group regression
- silence dmesg spam
- fix kprobe probing errors on ia64 and ppc64
- filter kprobe faults from userspace
- lockdep fix for perf exit path
- prevent perf #GP in KVM guest
- correct perf event and filters"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kprobes: Fix "Failed to find blacklist" probing errors on ia64 and ppc64
kprobes/x86: Don't try to resolve kprobe faults from userspace
perf/x86/intel: Avoid spamming kernel log for BTS buffer failure
perf/x86/intel: Protect LBR and extra_regs against KVM lying
perf: Fix lockdep warning on process exit
perf/x86/intel/uncore: Fix SNB-EP/IVT Cbox filter mappings
perf/x86/intel: Use proper dTLB-load-misses event on IvyBridge
perf: Revert ("perf: Always destroy groups on exit")
Pull x86 fixes from Peter Anvin:
"A couple of crash fixes, plus a fix that on 32 bits would cause a
missing -ENOSYS for nonexistent system calls"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, cpu: Fix cache topology for early P4-SMT
x86_32, entry: Store badsys error code in %eax
x86, MCE: Robustify mcheck_init_device
Pull vfs fixes from Christoph Hellwig:
"A vfsmount leak fix, and a compile warning fix"
* 'vfs-for-3.16' of git://git.infradead.org/users/hch/vfs:
fs: umount on symlink leaks mnt count
direct-io: fix uninitialized warning in do_direct_IO()
with some isochronous workloads (regression since v3.16-rc1).
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Merge tag 'firewire-fix-vt6315' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire regression fix from Stefan Richter:
"IEEE 1394 (FireWire) subsystem fix: MSI don't work on VIA PCIe
controllers with some isochronous workloads (regression since
v3.16-rc1)"
* tag 'firewire-fix-vt6315' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: ohci: disable MSI for VIA VT6315 again
this patch fixes some errors and warnings reported by checkpatch.pl
Signed-off-by: Zahari Doychev <zahari.doychev@linux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove unnecessary return at end of a void function.
Part of the eudyptula challenge: http://eudyptula-challenge.org/
Signed-off-by: Mostyn Bramley-Moore <mbmcode@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch cleans up the style, error handling, and string handling in the sysfs
functions recently added to visorchipset:
- Use of sscanf() was changed to type-appropriate kstrto*() functions
- error handling was simplified
- the error return value of visorchannel_write() was corrected
- switch use of driver-specific types to kernel types
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit e052dbf554.
Now that we use the virtio ->scan() function to register with the hwrng
core, we will not get read requests till probe is successfully finished.
So revert the workaround we had in place to refuse read requests while
we were not yet setup completely.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Instead of calling hwrng_register() in the probe routing, call it in the
scan routine. This ensures that when hwrng_register() is successful,
and it requests a few random bytes to seed the kernel's pool at init,
we're ready to service that request.
This will also enable us to remove the workaround added previously to
check whether probe was completed, and only then ask for data from the
host. The revert follows in the next commit.
There's a slight behaviour change here on unsuccessful hwrng_register().
Previously, when hwrng_register() failed, the probe() routine would
fail, and the vqs would be torn down, and driver would be marked not
initialized. Now, the vqs will remain initialized, driver would be
marked initialized as well, but won't be available in the list of RNGs
available to hwrng core. To fix the failures, the procedure remains the
same, i.e. unload and re-load the module, and hope things succeed the
next time around.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Re-arrange the elements of the virtrng_info struct to pack it better.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
vdev is unused in struct virtrng_info, remove it.
CC: Amos Kong <akong@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We should prefer `struct pci_device_id` over `DEFINE_PCI_DEVICE_TABLE` to meet
kernel coding style guidelines. This issue was reported by checkpatch.
Signed-off-by: Benoit Taine <benoit.taine@lip6.fr>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Fix checkpatch warning:
WARNING: debugfs_remove_recursive(NULL) is safe this check is probably not required
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: virtualization@lists.linux-foundation.org
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Symbols starting with .L are ELF local symbols and should not appear
in ELF symbol tables. However, unfortunately ARM binutils leaks the
.LANCHOR symbols into the symbol table, which leads kallsyms to report
these symbols rather than the real name. It is not very useful when
%pf reports symbols against these leaked .LANCHOR symbols.
Arrange for kallsyms to ignore these symbols using the same mechanism
that is used for the ARM mapping symbols.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
For several years, the pattern "foo$" has effectively been treated as
equivalent to "foo" due to a bug in the (misnamed) helper
number_prefix(). This hasn't been observed to cause any problems, so
remove the broken $ functionality and change all foo$ patterns to foo.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The scripts/mod/modpost.c triggers the following warning:
scripts/mod/modpost.c: In function ‘remove_dot’:
scripts/mod/modpost.c:1710:10: warning: ignoring return value of ‘strtoul’, declared with attribute warn_unused_result [-Wunused-result]
The remove_dot function that calls strtoul does not care about the
numeric value of the string that is parsed but only looks for the
end of the numeric sequence. As such, it's equivalent to just skip
over all digits.
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This check was introduced in 2006 by Alexey Dobriyan (9774a1f54f)
for module parameters; we removed it when we unified the check into
VERIFY_OCTAL_PERMISSIONS() as sysfs didn't have the same requirement.
Now all those users are fixed, reintroduce it.
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The within_module*() functions return only true or false. Let's use bool as
the return type.
Note that it should not change kABI because these are inline functions.
Signed-off-by: Petr Mladek <pmladek@suse.cz>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It is just a small optimization that allows to replace few
occurrences of within_module_init() || within_module_core()
with a single call.
Signed-off-by: Petr Mladek <pmladek@suse.cz>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
