Commit graph

104,109 commits

Author SHA1 Message Date
Boris Brezillon
d16397d57a mtd: rawnand: Get rid of the duplicate nand_chip forward declaration
There's already a forward declaration of nand_chip at the beginning of
the file. Get rid of this one.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
394938eadf mtd: rawnand: Get rid of nand_flash_dev forward declation
nand_scan[with_ids]() have been moved at the end of the file. We can
now get rid of of the nand_flash_dev forward declaration.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
0b4e61c1c2 mtd: rawnand: Move function prototypes after struct declarations
Move nand_scan[_with_ids]() and nand_wait_ready() at the end of the
file where all function prototype lies. This will also allow us to get
rid of the nand_flash_dev forward declaration.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
3cece3abeb mtd: rawnand: Deprecate ->chip_delay
The wait timeouts and delays are directly extracted from the NAND
timings and ->chip_delay is only used in legacy path, so let's move it
to the nand_legacy struct to make it clear.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
4524036793 mtd: rawnand: Deprecate ->{set,get}_features() hooks
Those hooks should be replaced by a proper ->exec_op() implementation.
Move them to the nand_legacy struct to make it clear.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
f9ebd1bb41 mtd: rawnand: Deprecate ->erase()
The ->erase() hook have been overloaded by some drivers for bad reasons:
either the driver was not fitting in the NAND framework and should have
been an MTD driver (docg4), or the driver uses a specific path for the
ERASE operation (denali), instead of implementing it generically.
In any case, we should discourage people from overloading this method
and encourage them to implement ->exec_op() instead.

Move the ->erase() hook to the nand_legacy struct to make it clear.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
cdc784c743 mtd: rawnand: Deprecate ->block_{bad,markbad}() hooks
Those hooks have been overloaded by some drivers for bad reasons:
either the driver was not fitting in the NAND framework and should
have been an MTD driver (docg4), or it was not properly implementing
the OOB read/write request or had a weird layout where BBM are trashed.
In any case, we should discourage people from overloading those
methods and encourage them to fix their driver instead.

Move the ->block_{bad,markbad}() hooks to the nand_legacy struct to
make it clear.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
8395b753d7 mtd: rawnand: Deprecate ->dev_ready() and ->waitfunc()
Those hooks have been replaced by ->exec_op(). Move them to the
nand_legacy struct.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
bf6065c6c0 mtd: rawnand: Deprecate ->cmd_ctrl() and ->cmdfunc()
Those hooks have been replaced by ->exec_op(). Move them to the
nand_legacy struct.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
716bbbabcc mtd: rawnand: Deprecate ->{read, write}_{byte, buf}() hooks
All those hooks have been replaced by ->exec_op(). Move them to the
nand_legacy struct.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
82fc509974 mtd: rawnand: Create a legacy struct and move ->IO_ADDR_{R, W} there
We regularly have new NAND controller drivers that are making use of
fields/hooks that we want to get rid of but can't because of all the
legacy drivers that we might break if we do.

So, instead of removing those fields/hooks, let's move them to a
sub-struct which is clearly documented as deprecated.

We start with the ->IO_ADDR_{R,W] fields.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
871a4073f4 mtd: rawnand: Make maxchips an unsigned int
There's no good reason to make maxchips a signed integer, since only
positive values are valid. Make it an unsigned int.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
e4cdf9cb32 mtd: rawnand: Pass a nand_chip object nand_erase_nand()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the nand_erase_nand() helper.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
5740d4c4f9 mtd: rawnand: Pass a nand_chip object to all nand_xxx_bbt() helpers
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the nand_xxx_bbt() helpers.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
858838b87e mtd: rawnand: Pass a nand_chip object to chip->setup_data_interface()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the chip->setup_data_interface() hook.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
2e7f1cec27 mtd: rawnand: Pass a nand_chip object to chip->setup_read_retry()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the chip->setup_read_retry() hook.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
aa36ff25ff mtd: rawnand: Pass a nand_chip object to chip->{get, set}_features()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the chip->{get,set}_features() hooks.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
a2098a9e4f mtd: rawnand: Pass a nand_chip object to chip->erase()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the chip->erase() hook.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
f1d46942e8 mtd: rawnand: Pass a nand_chip object to chip->waitfunc()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the chip->waitfunc() hook.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
5295cf2e04 mtd: rawnand: Pass a nand_chip object to chip->cmdfunc()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the chip->cmdfunc() hook.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
50a487e771 mtd: rawnand: Pass a nand_chip object to chip->dev_ready()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the chip->dev_ready() hook.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
0f808c1602 mtd: rawnand: Pass a nand_chip object to chip->cmd_ctrl()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the chip->cmd_ctrl() hook.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
c17556f545 mtd: rawnand: Pass a nand_chip object to chip->block_xxx() hooks
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle all chip->block_xxx() hooks at once.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
758b56f58b mtd: rawnand: Pass a nand_chip object to chip->select_chip()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle the chip->select_chip() hook.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
c0739d8572 mtd: rawnand: Pass a nand_chip object to chip->write_xxx() hooks
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle all chip->write_xxx() hooks at once.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
7e534323c4 mtd: rawnand: Pass a nand_chip object to chip->read_xxx() hooks
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle all chip->read_xxx() hooks at once.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
767eb6fbde mtd: rawnand: Pass a nand_chip object to ecc->write_xxx() hooks
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle all ecc->write_xxx() hooks at once.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
b976168757 mtd: rawnand: Pass a nand_chip object to ecc->read_xxx() hooks
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

Let's tackle all ecc->read_xxx() hooks at once.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
00da2ea972 mtd: rawnand: Pass a nand_chip object to ecc->correct()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one.

Now is ecc->correct()'s turn.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
af37d2c3a8 mtd: rawnand: Pass a nand_chip object to ecc->calculate()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one.

Now is ecc->calculate()'s turn.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
ec47636cd7 mtd: rawnand: Pass a nand_chip object to ecc->hwctl()
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one.

Now is ecc->hwctl()'s turn.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
2b356ab46e mtd: rawnand: Pass a nand_chip object to nand_wait_ready()
Let's make the raw NAND API consistent by patching all helpers to
take a nand_chip object instead of an mtd_info one.

Now is nand_wait_ready()'s turn.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
59ac276f22 mtd: rawnand: Pass a nand_chip object to nand_release()
Let's make the raw NAND API consistent by patching all helpers to
take a nand_chip object instead of an mtd_info one.

Now is nand_release()'s turn.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
00ad378f30 mtd: rawnand: Pass a nand_chip object to nand_scan()
Let's make the raw NAND API consistent by patching all helpers to take
a nand_chip object instead of an mtd_info one.

We start with nand_scan().

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Boris Brezillon
47bd59e538 mtd: rawnand: plat_nand: Pass a nand_chip object to all platform_nand_ctrl hooks
Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

In order to do that, we first need to update the platform_nand_ctrl
hooks to take a nand_chip object instead of an mtd_info.

We add temporary plat_nand_xxx() wrappers to the do the mtd -> chip
conversion, but those will be dropped when patching nand_chip hooks to
take a nand_chip object.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Krzysztof Halasa <khalasa@piap.pl>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-03 11:12:25 +02:00
Kurt Kanzenbach
ff8648f29f mtd: rawnand: fsl_ifc: fixup SRAM init for newer ctrl versions
Newer versions of the IFC controller use a different method of initializing the
internal SRAM: Instead of reading from flash, a bit in the NAND configuration
register has to be set in order to trigger the self-initializing process.

Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-09-04 23:37:38 +02:00
Boris Brezillon
7525c9518e mtd: rawnand: Get rid of the ->read_word() hook
Commit c120e75e0e ("mtd: nand: use read_oob() instead of cmdfunc()
for bad block check") removed this only user of the ->read_word()
method but kept the hook in place. Remove it now.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-09-04 22:53:13 +02:00
Linus Torvalds
fd6868d82b Devicetree updates for 4.19-rc2:
A couple of new helper functions in preparation for some tree wide
 clean-ups.
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Merge tag 'devicetree-fixes-for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:
 "A couple of new helper functions in preparation for some tree wide
  clean-ups.

  I'm sending these new helpers now for rc2 in order to simplify the
  dependencies on subsequent cleanups across the tree in 4.20"

* tag 'devicetree-fixes-for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: Add device_type access helper functions
  of: add node name compare helper functions
  of: add helper to lookup compatible child node
2018-09-02 10:56:01 -07:00
Linus Torvalds
420f51f4ab A handful of arm64 fixes
- Fix typos in SVE documentation
 - Fix type-checking and implicit truncation for SMCCC calls
 - Force CONFIG_HOLES_IN_ZONE=y so that SLAB doesn't fall over NOMAP regions
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "A few arm64 fixes came in this week, specifically fixing some nasty
  truncation of return values from firmware calls and resolving a
  VM_BUG_ON due to accessing uninitialised struct pages corresponding to
  NOMAP pages.

  Summary:

   - Fix typos in SVE documentation

   - Fix type-checking and implicit truncation for SMCCC calls

   - Force CONFIG_HOLES_IN_ZONE=y so that SLAB doesn't fall over NOMAP
     regions"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: always enable CONFIG_HOLES_IN_ZONE
  arm/arm64: smccc-1.1: Handle function result as parameters
  arm/arm64: smccc-1.1: Make return values unsigned long
  Documentation/arm64/sve: Couple of improvements and typos
2018-08-31 09:20:30 -07:00
Linus Torvalds
754cf4b243 Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:

 - regression fixes for i801 and designware

 - better API and leak fix for releasing DMA safe buffers

 - better greppable strings for the bitbang algorithm

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: sh_mobile: fix leak when using DMA bounce buffer
  i2c: sh_mobile: define start_ch() void as it only returns 0 anyhow
  i2c: refactor function to release a DMA safe buffer
  i2c: algos: bit: make the error messages grepable
  i2c: designware: Re-init controllers with pm_disabled set on resume
  i2c: i801: Allow ACPI AML access I/O ports not reserved for SMBus
2018-08-31 08:38:53 -07:00
Rob Herring
0413bedabc of: Add device_type access helper functions
In preparation to remove direct access to device_node.type, add
of_node_is_type() and of_node_get_device_type() helpers to check and
retrieve the device type.

Cc: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2018-08-31 08:30:42 -04:00
Wolfram Sang
82fe39a6bc i2c: refactor function to release a DMA safe buffer
a) rename to 'put' instead of 'release' to match 'get' when obtaining
   the buffer
b) change the argument order to have the buffer as first argument
c) add a new argument telling the function if the message was
   transferred. This allows the function to be used also in cases
   where setting up DMA failed, so the buffer needs to be freed without
   syncing to the message buffer.

Also convert the only user.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-08-30 23:13:15 +02:00
Rob Herring
f42b0e18f2 of: add node name compare helper functions
In preparation to remove device_node.name pointer, add helper functions
for node name comparisons which are a common pattern throughout the kernel.

Cc: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2018-08-30 13:53:05 -05:00
Marc Zyngier
755a8bf557 arm/arm64: smccc-1.1: Handle function result as parameters
If someone has the silly idea to write something along those lines:

	extern u64 foo(void);

	void bar(struct arm_smccc_res *res)
	{
		arm_smccc_1_1_smc(0xbad, foo(), res);
	}

they are in for a surprise, as this gets compiled as:

	0000000000000588 <bar>:
	 588:   a9be7bfd        stp     x29, x30, [sp, #-32]!
	 58c:   910003fd        mov     x29, sp
	 590:   f9000bf3        str     x19, [sp, #16]
	 594:   aa0003f3        mov     x19, x0
	 598:   aa1e03e0        mov     x0, x30
	 59c:   94000000        bl      0 <_mcount>
	 5a0:   94000000        bl      0 <foo>
	 5a4:   aa0003e1        mov     x1, x0
	 5a8:   d4000003        smc     #0x0
	 5ac:   b4000073        cbz     x19, 5b8 <bar+0x30>
	 5b0:   a9000660        stp     x0, x1, [x19]
	 5b4:   a9010e62        stp     x2, x3, [x19, #16]
	 5b8:   f9400bf3        ldr     x19, [sp, #16]
	 5bc:   a8c27bfd        ldp     x29, x30, [sp], #32
	 5c0:   d65f03c0        ret
	 5c4:   d503201f        nop

The call to foo "overwrites" the x0 register for the return value,
and we end up calling the wrong secure service.

A solution is to evaluate all the parameters before assigning
anything to specific registers, leading to the expected result:

	0000000000000588 <bar>:
	 588:   a9be7bfd        stp     x29, x30, [sp, #-32]!
	 58c:   910003fd        mov     x29, sp
	 590:   f9000bf3        str     x19, [sp, #16]
	 594:   aa0003f3        mov     x19, x0
	 598:   aa1e03e0        mov     x0, x30
	 59c:   94000000        bl      0 <_mcount>
	 5a0:   94000000        bl      0 <foo>
	 5a4:   aa0003e1        mov     x1, x0
	 5a8:   d28175a0        mov     x0, #0xbad
	 5ac:   d4000003        smc     #0x0
	 5b0:   b4000073        cbz     x19, 5bc <bar+0x34>
	 5b4:   a9000660        stp     x0, x1, [x19]
	 5b8:   a9010e62        stp     x2, x3, [x19, #16]
	 5bc:   f9400bf3        ldr     x19, [sp, #16]
	 5c0:   a8c27bfd        ldp     x29, x30, [sp], #32
	 5c4:   d65f03c0        ret

Reported-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2018-08-30 14:18:03 +01:00
Linus Torvalds
af3a5fe4dd Merge tag 'hwmon-for-linus-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:

 - Fix potential Spectre v1 in nct6775

 - Add error checking to adt7475 driver

 - Fix reading shunt resistor value in ina2xx driver

* tag 'hwmon-for-linus-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (nct6775) Fix potential Spectre v1
  hwmon: (adt7475) Make adt7475_read_word() return errors
  hwmon: (adt7475) Potential error pointer dereferences
  hwmon: (ina2xx) fix sysfs shunt resistor read access
2018-08-29 16:03:45 -07:00
Linus Torvalds
f3f106dac0 \n
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Merge tag 'for_v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull misc fs fixes from Jan Kara:

 - make UDF to properly mount media created by Win7

 - make isofs to properly refuse devices with large physical block size

 - fix a Spectre gadget in quotactl(2)

 - fix a warning in fsnotify code hit by syzkaller

* tag 'for_v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Fix mounting of Win7 created UDF filesystems
  udf: Remove dead code from udf_find_fileset()
  fs/quota: Fix spectre gadget in do_quotactl
  fs/quota: Replace XQM_MAXQUOTAS usage with MAXQUOTAS
  isofs: reject hardware sector size > 2048 bytes
  fsnotify: fix false positive warning on inode delete
2018-08-29 14:56:45 -07:00
Johan Hovold
36156f9241 of: add helper to lookup compatible child node
Add of_get_compatible_child() helper that can be used to lookup
compatible child nodes.

Several drivers currently use of_find_compatible_node() to lookup child
nodes while failing to notice that the of_find_ functions search the
entire tree depth-first (from a given start node) and therefore can
match unrelated nodes. The fact that these functions also drop a
reference to the node they start searching from (e.g. the parent node)
is typically also overlooked, something which can lead to use-after-free
bugs.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2018-08-29 08:06:46 -05:00
Marc Zyngier
1d8f574708 arm/arm64: smccc-1.1: Make return values unsigned long
An unfortunate consequence of having a strong typing for the input
values to the SMC call is that it also affects the type of the
return values, limiting r0 to 32 bits and r{1,2,3} to whatever
was passed as an input.

Let's turn everything into "unsigned long", which satisfies the
requirements of both architectures, and allows for the full
range of return values.

Reported-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2018-08-29 11:42:20 +01:00
Linus Torvalds
050cdc6c95 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) ICE, E1000, IGB, IXGBE, and I40E bug fixes from the Intel folks.

 2) Better fix for AB-BA deadlock in packet scheduler code, from Cong
    Wang.

 3) bpf sockmap fixes (zero sized key handling, etc.) from Daniel
    Borkmann.

 4) Send zero IPID in TCP resets and SYN-RECV state ACKs, to prevent
    attackers using it as a side-channel. From Eric Dumazet.

 5) Memory leak in mediatek bluetooth driver, from Gustavo A. R. Silva.

 6) Hook up rt->dst.input of ipv6 anycast routes properly, from Hangbin
    Liu.

 7) hns and hns3 bug fixes from Huazhong Tan.

 8) Fix RIF leak in mlxsw driver, from Ido Schimmel.

 9) iova range check fix in vhost, from Jason Wang.

10) Fix hang in do_tcp_sendpages() with tls, from John Fastabend.

11) More r8152 chips need to disable RX aggregation, from Kai-Heng Feng.

12) Memory exposure in TCA_U32_SEL handling, from Kees Cook.

13) TCP BBR congestion control fixes from Kevin Yang.

14) hv_netvsc, ignore non-PCI devices, from Stephen Hemminger.

15) qed driver fixes from Tomer Tayar.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (77 commits)
  net: sched: Fix memory exposure from short TCA_U32_SEL
  qed: fix spelling mistake "comparsion" -> "comparison"
  vhost: correctly check the iova range when waking virtqueue
  qlge: Fix netdev features configuration.
  net: macb: do not disable MDIO bus at open/close time
  Revert "net: stmmac: fix build failure due to missing COMMON_CLK dependency"
  net: macb: Fix regression breaking non-MDIO fixed-link PHYs
  mlxsw: spectrum_switchdev: Do not leak RIFs when removing bridge
  i40e: fix condition of WARN_ONCE for stat strings
  i40e: Fix for Tx timeouts when interface is brought up if DCB is enabled
  ixgbe: fix driver behaviour after issuing VFLR
  ixgbe: Prevent unsupported configurations with XDP
  ixgbe: Replace GFP_ATOMIC with GFP_KERNEL
  igb: Replace mdelay() with msleep() in igb_integrated_phy_loopback()
  igb: Replace GFP_ATOMIC with GFP_KERNEL in igb_sw_init()
  igb: Use an advanced ctx descriptor for launchtime
  e1000: ensure to free old tx/rx rings in set_ringparam()
  e1000: check on netif_running() before calling e1000_up()
  ixgb: use dma_zalloc_coherent instead of allocator/memset
  ice: Trivial formatting fixes
  ...
2018-08-27 11:59:39 -07:00
Lothar Felten
3ad867001c hwmon: (ina2xx) fix sysfs shunt resistor read access
fix the sysfs shunt resistor read access: return the shunt resistor
value, not the calibration register contents.

update email address

Signed-off-by: Lothar Felten <lothar.felten@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-08-26 17:45:25 -07:00