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When getting the names of the child nodes, kasprintf is used to
allocate memory which is used to create the string for the node
name. Unfortunately, there is no memory check to determine
if this allocation fails, it may cause an error when trying
to get child node name.
This patch will check if the memory allocation fails, and returns
and -ENOMEM error instead of blindly moving on.
Fixes: 260249f929e8 ("clk: vc5: Enable addition output configurations of the Versaclock")
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Link: https://lore.kernel.org/r/20200716122620.4538-1-aford173@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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There are a several places where printing an error message of
init.name occurs after init.name has been kfree'd. Also the failure
message is duplicated each time in the code. Fix this by adding
a registration error failure path for these cases, moving the
duplicated error messages to one common point and kfree'ing init.name
only after it has been used.
Changes also shrink the object code size by 171 bytes (x86-64, gcc 9.3):
Before:
text data bss dec hex filename
21057 3960 64 25081 61f9 drivers/clk/clk-versaclock5.o
After:
text data bss dec hex filename
20886 3960 64 24910 614e drivers/clk/clk-versaclock5.o
Addresses-Coverity: ("Use after free")
Fixes: f491276a5168 ("clk: vc5: Allow Versaclock driver to support multiple instances")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200625132736.88832-1-colin.king@canonical.com
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
[sboyd@kernel.org: Drop stray newline]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The existing driver is expecting the Versaclock to be pre-programmed,
and only sets the output frequency. Unfortunately, not all devices
are pre-programmed, and the Versaclock chip has more options beyond
just the frequency.
This patch enables the following additional features:
- Programmable voltage: 1.8V, 2.5V, or 3.3V
- Slew Percentage of normal: 85%, 90%, or 100%
- Output Type: LVPECL, CMOS, HCSL, or LVDS
Signed-off-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20200603154329.31579-3-aford173@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The VersaClock driver now supports some additional bindings to support
child nodes which can configure optional settings like mode, voltage
and slew.
This patch updates the binding document to describe what is available
in the driver.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200603154329.31579-2-aford173@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Currently, the Versaclock driver is only expecting one instance and
uses hard-coded names for the various clock names. Unfortunately,
this is a problem when there is more than one instance of the driver,
because the subsequent instantiations of the driver use the identical
name. Each clock after the fist fails to load, because the clock
subsystem cannot handle two clocks with identical name.
This patch removes the hard-coded name arrays and uses kasprintf to
assign clock names based on names of their respective node and parent
node which gives each clock a unique identifying name.
For a verasaclock node with a name like:
versaclock5: versaclock_som@6a
The updated clock names would appear like:
versaclock_som.mux
versaclock_som.out0_sel_i2cb
versaclock_som.pfd
versaclock_som.pll
versaclock_som.fod3
versaclock_som.out4
versaclock_som.fod2
versaclock_som.out3
versaclock_som.fod1
versaclock_som.out2
versaclock_som.fod0
versaclock_som.out1
Signed-off-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20200603154329.31579-1-aford173@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The SafeSetID LSM uses the security_task_fix_setuid hook to filter
set*uid() syscalls according to its configured security policy. In
preparation for adding analagous support in the LSM for set*gid()
syscalls, we add the requisite hook here. Tested by putting print
statements in the security_task_fix_setgid hook and seeing them get hit
during kernel boot.
Signed-off-by: Thomas Cedeno <thomascedeno@google.com>
Signed-off-by: Micah Morton <mortonm@chromium.org>
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This reverts commit a43a67a2d715540c1368b9501a22b0373b5874c0.
This patch reverts the main part of switching direct io implementation
to iomap infrastructure. There's a problem in invalidate page that
couldn't be solved as regression in this development cycle.
The problem occurs when buffered and direct io are mixed, and the ranges
overlap. Although this is not recommended, filesystems implement
measures or fallbacks to make it somehow work. In this case, fallback to
buffered IO would be an option for btrfs (this already happens when
direct io is done on compressed data), but the change would be needed in
the iomap code, bringing new semantics to other filesystems.
Another problem arises when again the buffered and direct ios are mixed,
invalidation fails, then -EIO is set on the mapping and fsync will fail,
though there's no real error.
There have been discussions how to fix that, but revert seems to be the
least intrusive option.
Link: https://lore.kernel.org/linux-btrfs/20200528192103.xm45qoxqmkw7i5yl@fiona/
Signed-off-by: David Sterba <dsterba@suse.com>
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On AM65xx MCU CPSW2G NUSS and 66AK2E/L NUSS allmulti setting does not allow
unregistered mcast packets to pass.
This happens, because ALE VLAN entries on these SoCs do not contain port
masks for reg/unreg mcast packets, but instead store indexes of
ALE_VLAN_MASK_MUXx_REG registers which intended for store port masks for
reg/unreg mcast packets.
This path was missed by commit 9d1f6447274f ("net: ethernet: ti: ale: fix
seeing unreg mcast packets with promisc and allmulti disabled").
Hence, fix it by taking into account ALE type in cpsw_ale_set_allmulti().
Fixes: 9d1f6447274f ("net: ethernet: ti: ale: fix seeing unreg mcast packets with promisc and allmulti disabled")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ALE parameters structure is created on stack, so it has to be reset
before passing to cpsw_ale_create() to avoid garbage values.
Fixes: 93a76530316a ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Looking into the context (atomic!) and the error message should be dropped.
Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adam Ford
Colin Ian King
Linus Torvalds
Thomas Cedeno
David Sterba
Grygorii Strashko
Liao Pingfang