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Author SHA1 Message Date
Daniel Vetter
d80976d9ff dma-resv: some doc polish for iterators
Hammer it a bit more in that iterators can be restarted and when that
matters, plus suggest to prefer the locked version whenver.

Also delete the two leftover kerneldoc for static functions plus
sprinkle some more links while at it.

v2: Keep some comments (Christian)

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20211130152756.1388106-1-daniel.vetter@ffwll.ch
2022-01-31 21:45:24 +01:00
Tomohito Esaki
3d082157a2 drm: remove allow_fb_modifiers
The allow_fb_modifiers flag is unnecessary since it has been replaced
with fb_modifiers_not_supported flag.

v3:
 - change the order as follows:
   1. add fb_modifiers_not_supported flag
   2. add default modifiers
   3. remove allow_fb_modifiers flag

v5:
 - keep a sanity check in plane init func

Signed-off-by: Tomohito Esaki <etom@igel.co.jp>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220128060836.11216-4-etom@igel.co.jp
2022-01-31 21:45:24 +01:00
Tomohito Esaki
8be576837b drm: add support modifiers for drivers whose planes only support linear layout
The LINEAR modifier is advertised as default if a driver doesn't specify
modifiers.

v2:
 - rebase to the latest master branch (5.16.0+)
    + "drm/plane: Make format_mod_supported truly optional" patch [1]
   [1] https://patchwork.freedesktop.org/patch/467940/?series=98255&rev=3

v3:
 - change the order as follows:
   1. add fb_modifiers_not_supported flag
   2. add default modifiers
   3. remove allow_fb_modifiers flag

v5:
 - change default_modifiers array from non-static to static
 - remove terminator in default_modifiers array
 - use ARRAY_SIZE to get the format_modifier_count
 - update sanity check in plane init func to use the
   fb_modifiers_not_supported
 - modify kernel docs

Signed-off-by: Tomohito Esaki <etom@igel.co.jp>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220128060836.11216-3-etom@igel.co.jp
2022-01-31 21:45:24 +01:00
Tomohito Esaki
2af104290d drm: introduce fb_modifiers_not_supported flag in mode_config
If only linear modifier is advertised, since there are many drivers that
only linear supported, the DRM core should handle this rather than
open-coding in every driver. However, there are legacy drivers such as
radeon that do not support modifiers but infer the actual layout of the
underlying buffer. Therefore, a new flag fb_modifiers_not_supported is
introduced for these legacy drivers, and allow_fb_modifiers is replaced
with this new flag.

v3:
 - change the order as follows:
   1. add fb_modifiers_not_supported flag
   2. add default modifiers
   3. remove allow_fb_modifiers flag
 - add a conditional disable in amdgpu_dm_plane_init()

v4:
 - modify kernel docs

v5:
 - modify kernel docs

Signed-off-by: Tomohito Esaki <etom@igel.co.jp>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220128060836.11216-2-etom@igel.co.jp
2022-01-31 21:45:23 +01:00
Kenta Tada
0407a65f35 bpf: make bpf_copy_from_user_task() gpl only
access_process_vm() is exported by EXPORT_SYMBOL_GPL().

Signed-off-by: Kenta Tada <Kenta.Tada@sony.com>
Link: https://lore.kernel.org/r/20220128170906.21154-1-Kenta.Tada@sony.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-01-31 12:44:37 -08:00
Alexei Starovoitov
1fc5bdb2b8 Merge branch 'Split bpf_sock dst_port field'
Jakub Sitnicki says:

====================

This is a follow-up to discussion around the idea of making dst_port in struct
bpf_sock a 16-bit field that happened in [1].

v2:
- use an anonymous field for zero padding (Alexei)

v1:
- keep dst_field offset unchanged to prevent existing BPF program breakage
  (Martin)
- allow 8-bit loads from dst_port[0] and [1]
- add test coverage for the verifier and the context access converter

[1] https://lore.kernel.org/bpf/87sftbobys.fsf@cloudflare.com/
====================

Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-01-31 12:39:19 -08:00
Jakub Sitnicki
8f50f16ff3 selftests/bpf: Extend verifier and bpf_sock tests for dst_port loads
Add coverage to the verifier tests and tests for reading bpf_sock fields to
ensure that 32-bit, 16-bit, and 8-bit loads from dst_port field are allowed
only at intended offsets and produce expected values.

While 16-bit and 8-bit access to dst_port field is straight-forward, 32-bit
wide loads need be allowed and produce a zero-padded 16-bit value for
backward compatibility.

Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/r/20220130115518.213259-3-jakub@cloudflare.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-01-31 12:39:12 -08:00
Jakub Sitnicki
4421a58271 bpf: Make dst_port field in struct bpf_sock 16-bit wide
Menglong Dong reports that the documentation for the dst_port field in
struct bpf_sock is inaccurate and confusing. From the BPF program PoV, the
field is a zero-padded 16-bit integer in network byte order. The value
appears to the BPF user as if laid out in memory as so:

  offsetof(struct bpf_sock, dst_port) + 0  <port MSB>
                                      + 8  <port LSB>
                                      +16  0x00
                                      +24  0x00

32-, 16-, and 8-bit wide loads from the field are all allowed, but only if
the offset into the field is 0.

32-bit wide loads from dst_port are especially confusing. The loaded value,
after converting to host byte order with bpf_ntohl(dst_port), contains the
port number in the upper 16-bits.

Remove the confusion by splitting the field into two 16-bit fields. For
backward compatibility, allow 32-bit wide loads from offsetof(struct
bpf_sock, dst_port).

While at it, allow loads 8-bit loads at offset [0] and [1] from dst_port.

Reported-by: Menglong Dong <imagedong@tencent.com>
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/r/20220130115518.213259-2-jakub@cloudflare.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-01-31 12:39:12 -08:00
Tom Rix
88a309465b lib: zstd: clean up double word in comment.
Remove the second 'a' and 'into'.

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Nick Terrell <terrelln@fb.com>
2022-01-31 11:56:43 -08:00
Randy Dunlap
04662bac00 ACPI: require CRC32 to build
ACPI core now requires crc32() but the kernel build can fail when
CRC32 is not set/enabled, so select it in the ACPI Kconfig entry.

Fixes this build error:

ia64-linux-ld: drivers/acpi/scan.o: in function `acpi_store_pld_crc':
include/acpi/platform/aclinuxex.h:62: undefined reference to `crc32_le'

Fixes: 882c982dad ("acpi: Store CRC-32 hash of the _PLD in struct acpi_device")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-01-31 20:16:28 +01:00
Daniel Latypov
c274145347 kunit: cleanup assertion macro internal variables
All the operands should be tagged `const`.
We're only assigning them to variables so that we can compare them (e.g.
check if left == right, etc.) and avoid evaluating expressions multiple
times.

There's no need for them to be mutable.

Also rename the helper variable `loc` to `__loc` like we do with
`__assertion` and `__strs` to avoid potential name collisions with user
code.

Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-31 11:55:48 -07:00
Daniel Latypov
2b6861e237 kunit: factor out str constants from binary assertion structs
If the compiler doesn't optimize them away, each kunit assertion (use of
KUNIT_EXPECT_EQ, etc.) can use 88 bytes of stack space in the worst and
most common case. This has led to compiler warnings and a suggestion
from Linus to move data from the structs into static const's where
possible [1].

This builds upon [2] which did so for the base struct kunit_assert type.
That only reduced sizeof(struct kunit_binary_assert) from 88 to 64.

Given these are by far the most commonly used asserts, this patch
factors out the textual representations of the operands and comparator
into another static const, saving 16 more bytes.

In detail, KUNIT_EXPECT_EQ(test, 2 + 2, 5) yields the following struct
  (struct kunit_binary_assert) {
    .assert = <struct kunit_assert>,
    .operation = "==",
    .left_text = "2 + 2",
    .left_value = 4,
    .right_text = "5",
    .right_value = 5,
  }
After this change
  static const struct kunit_binary_assert_text __text = {
    .operation = "==",
    .left_text = "2 + 2",
    .right_text = "5",
  };
  (struct kunit_binary_assert) {
    .assert = <struct kunit_assert>,
    .text = &__text,
    .left_value = 4,
    .right_value = 5,
  }

This also DRYs the code a bit more since these str fields were repeated
for the string and pointer versions of kunit_binary_assert.

Note: we could name the kunit_binary_assert_text fields left/right
instead of left_text/right_text. But that would require changing the
macros a bit since they have args called "left" and "right" which would
be substituted in `.left = #left` as `.2 + 2 = \"2 + 2\"`.

[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
[2] https://lore.kernel.org/linux-kselftest/20220113165931.451305-6-dlatypov@google.com/

Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-31 11:55:39 -07:00
Daniel Latypov
064ff292ac kunit: consolidate KUNIT_INIT_BINARY_ASSERT_STRUCT macros
We currently have 2 other versions of KUNIT_INIT_BINARY_ASSERT_STRUCT.
The only differences are that
* the format funcition they pass is different
* the types of left_val/right_val should be different (integral,
pointer, string).

The latter doesn't actually matter since these macros are just plumbing
them along to KUNIT_ASSERTION where they will get type checked.

So combine them all into a single KUNIT_INIT_BINARY_ASSERT_STRUCT that
now also takes the format function as a parameter.

Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-31 11:55:33 -07:00
Daniel Latypov
6419abb80e kunit: remove va_format from kunit_assert
The concern is that having a lot of redundant fields in kunit_assert can
blow up stack usage if the compiler doesn't optimize them away [1].

The comment on this field implies that it was meant to be initialized
when the expect/assert was declared, but this only happens when we run
kunit_do_failed_assertion().

We don't need to access it outside of that function, so move it out of
the struct and make it a local variable there.

This change also takes the chance to reduce the number of macros by
inlining the now simplified KUNIT_INIT_ASSERT_STRUCT() macro.

[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ

Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-31 11:55:27 -07:00
Daniel Latypov
95dcbc55fe kunit: tool: drop mostly unused KunitResult.result field
This field is only used to pass along the parsed Test object from
parse_tests().
Everywhere else the `result` field is ignored.

Instead make parse_tests() explicitly return a KunitResult and Test so
we can retire the `result` field.

Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-31 11:55:18 -07:00
Rodrigo Vivi
063565aca3 Merge drm/drm-next into drm-intel-next
Catch-up with 5.17-rc2 and trying to align with drm-intel-gt-next
for a possible topic branch for merging the split of i915_regs...

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2022-01-31 13:19:33 -05:00
Matt Roper
ef6e871af3 drm/i915/dg2: s/engine->i915/i915/ for engine workarounds
rcs_engine_wa_init() has a local 'i915' variable; we should use that
rather than 'engine->i915' for consistency with how we handle other
platforms.

Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220128170125.4121819-1-matthew.d.roper@intel.com
2022-01-31 09:57:23 -08:00
Ming Lei
edb854a368 scsi: core: Reallocate device's budget map on queue depth change
We currently use ->cmd_per_lun as initial queue depth for setting up the
budget_map. Martin Wilck reported that it is common for the queue_depth to
be subsequently updated in slave_configure() based on detected hardware
characteristics.

As a result, for some drivers, the static host template settings for
cmd_per_lun and can_queue won't actually get used in practice. And if the
default values are used to allocate the budget_map, memory may be consumed
unnecessarily.

Fix the issue by reallocating the budget_map after ->slave_configure()
returns. At that time the device queue_depth should accurately reflect what
the hardware needs.

Link: https://lore.kernel.org/r/20220127153733.409132-1-ming.lei@redhat.com
Cc: Bart Van Assche <bvanassche@acm.org>
Reported-by: Martin Wilck <martin.wilck@suse.com>
Suggested-by: Martin Wilck <martin.wilck@suse.com>
Tested-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-01-31 12:56:01 -05:00
Alexander Lobakin
f322a620be ixgbe: respect metadata on XSK Rx to skb
For now, if the XDP prog returns XDP_PASS on XSK, the metadata
will be lost as it doesn't get copied to the skb.

Copy it along with the frame headers. Account its size on skb
allocation, and when copying just treat it as a part of the frame
and do a pull after to "move" it to the "reserved" zone.

net_prefetch() xdp->data_meta and align the copy size to speed-up
memcpy() a little and better match ixgbe_construct_skb().

Fixes: d0bcacd0a1 ("ixgbe: add AF_XDP zero-copy Rx support")
Suggested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-01-31 09:50:20 -08:00
Alexander Lobakin
8f405221a7 ixgbe: don't reserve excessive XDP_PACKET_HEADROOM on XSK Rx to skb
{__,}napi_alloc_skb() allocates and reserves additional NET_SKB_PAD
+ NET_IP_ALIGN for any skb.
OTOH, ixgbe_construct_skb_zc() currently allocates and reserves
additional `xdp->data - xdp->data_hard_start`, which is
XDP_PACKET_HEADROOM for XSK frames.
There's no need for that at all as the frame is post-XDP and will
go only to the networking stack core.
Pass the size of the actual data only to __napi_alloc_skb() and
don't reserve anything. This will give enough headroom for stack
processing.

Fixes: d0bcacd0a1 ("ixgbe: add AF_XDP zero-copy Rx support")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-01-31 09:47:21 -08:00
Alexander Lobakin
1fbdaa1338 ixgbe: pass bi->xdp to ixgbe_construct_skb_zc() directly
To not dereference bi->xdp each time in ixgbe_construct_skb_zc(),
pass bi->xdp as an argument instead of bi. We can also call
xsk_buff_free() outside of the function as well as assign bi->xdp
to NULL, which seems to make it closer to its name.

Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-01-31 09:47:21 -08:00
Alexander Lobakin
f9e61d365b igc: don't reserve excessive XDP_PACKET_HEADROOM on XSK Rx to skb
{__,}napi_alloc_skb() allocates and reserves additional NET_SKB_PAD
+ NET_IP_ALIGN for any skb.
OTOH, igc_construct_skb_zc() currently allocates and reserves
additional `xdp->data_meta - xdp->data_hard_start`, which is about
XDP_PACKET_HEADROOM for XSK frames.
There's no need for that at all as the frame is post-XDP and will
go only to the networking stack core.
Pass the size of the actual data only (+ meta) to
__napi_alloc_skb() and don't reserve anything. This will give
enough headroom for stack processing.
Also, net_prefetch() xdp->data_meta and align the copy size to
speed-up memcpy() a little and better match igc_construct_skb().

Fixes: fc9df2a0b5 ("igc: Enable RX via AF_XDP zero-copy")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Nechama Kraus <nechamax.kraus@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-01-31 09:47:13 -08:00
Alexander Lobakin
45a34ca680 ice: respect metadata on XSK Rx to skb
For now, if the XDP prog returns XDP_PASS on XSK, the metadata will
be lost as it doesn't get copied to the skb.

Copy it along with the frame headers. Account its size on skb
allocation, and when copying just treat it as a part of the frame
and do a pull after to "move" it to the "reserved" zone.

net_prefetch() xdp->data_meta and align the copy size to speed-up
memcpy() a little and better match ice_construct_skb().

Fixes: 2d4238f556 ("ice: Add support for AF_XDP")
Suggested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-01-31 09:46:05 -08:00
Alexander Lobakin
dc44572d19 ice: don't reserve excessive XDP_PACKET_HEADROOM on XSK Rx to skb
{__,}napi_alloc_skb() allocates and reserves additional NET_SKB_PAD
+ NET_IP_ALIGN for any skb.
OTOH, ice_construct_skb_zc() currently allocates and reserves
additional `xdp->data - xdp->data_hard_start`, which is
XDP_PACKET_HEADROOM for XSK frames.
There's no need for that at all as the frame is post-XDP and will
go only to the networking stack core.
Pass the size of the actual data only to __napi_alloc_skb() and
don't reserve anything. This will give enough headroom for stack
processing.

Fixes: 2d4238f556 ("ice: Add support for AF_XDP")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-01-31 09:43:35 -08:00
Alexander Lobakin
ee803dca96 ice: respect metadata in legacy-rx/ice_construct_skb()
In "legacy-rx" mode represented by ice_construct_skb(), we can
still use XDP (and XDP metadata), but after XDP_PASS the metadata
will be lost as it doesn't get copied to the skb.
Copy it along with the frame headers. Account its size on skb
allocation, and when copying just treat it as a part of the frame
and do a pull after to "move" it to the "reserved" zone.
Point net_prefetch() to xdp->data_meta instead of data. This won't
change anything when the meta is not here, but will save some cache
misses otherwise.

Suggested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-01-31 09:43:35 -08:00
Alexander Lobakin
6dba29537c i40e: respect metadata on XSK Rx to skb
For now, if the XDP prog returns XDP_PASS on XSK, the metadata will
be lost as it doesn't get copied to the skb.

Copy it along with the frame headers. Account its size on skb
allocation, and when copying just treat it as a part of the frame
and do a pull after to "move" it to the "reserved" zone.

net_prefetch() xdp->data_meta and align the copy size to speed-up
memcpy() a little and better match i40e_construct_skb().

Fixes: 0a714186d3 ("i40e: add AF_XDP zero-copy Rx support")
Suggested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-01-31 09:42:58 -08:00
Alexander Lobakin
bc97f9c6f9 i40e: don't reserve excessive XDP_PACKET_HEADROOM on XSK Rx to skb
{__,}napi_alloc_skb() allocates and reserves additional NET_SKB_PAD
+ NET_IP_ALIGN for any skb.
OTOH, i40e_construct_skb_zc() currently allocates and reserves
additional `xdp->data - xdp->data_hard_start`, which is
XDP_PACKET_HEADROOM for XSK frames.
There's no need for that at all as the frame is post-XDP and will
go only to the networking stack core.
Pass the size of the actual data only to __napi_alloc_skb() and
don't reserve anything. This will give enough headroom for stack
processing.

Fixes: 0a714186d3 ("i40e: add AF_XDP zero-copy Rx support")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-01-31 09:37:47 -08:00
Vincenzo Frascino
ec049891b2 kselftest: Fix vdso_test_abi return status
vdso_test_abi contains a batch of tests that verify the validity of the
vDSO ABI.

When a vDSO symbol is not found the relevant test is skipped reporting
KSFT_SKIP. All the tests return values are then added in a single
variable which is checked to verify failures. This approach can have
side effects which result in reporting the wrong kselftest exit status.

Fix vdso_test_abi verifying the return code of each test separately.

Cc: Shuah Khan <shuah@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Reported-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-31 10:35:14 -07:00
John Meneghini
936bd03405 scsi: bnx2fc: Make bnx2fc_recv_frame() mp safe
Running tests with a debug kernel shows that bnx2fc_recv_frame() is
modifying the per_cpu lport stats counters in a non-mpsafe way.  Just boot
a debug kernel and run the bnx2fc driver with the hardware enabled.

[ 1391.699147] BUG: using smp_processor_id() in preemptible [00000000] code: bnx2fc_
[ 1391.699160] caller is bnx2fc_recv_frame+0xbf9/0x1760 [bnx2fc]
[ 1391.699174] CPU: 2 PID: 4355 Comm: bnx2fc_l2_threa Kdump: loaded Tainted: G    B
[ 1391.699180] Hardware name: HP ProLiant DL120 G7, BIOS J01 07/01/2013
[ 1391.699183] Call Trace:
[ 1391.699188]  dump_stack_lvl+0x57/0x7d
[ 1391.699198]  check_preemption_disabled+0xc8/0xd0
[ 1391.699205]  bnx2fc_recv_frame+0xbf9/0x1760 [bnx2fc]
[ 1391.699215]  ? do_raw_spin_trylock+0xb5/0x180
[ 1391.699221]  ? bnx2fc_npiv_create_vports.isra.0+0x4e0/0x4e0 [bnx2fc]
[ 1391.699229]  ? bnx2fc_l2_rcv_thread+0xb7/0x3a0 [bnx2fc]
[ 1391.699240]  bnx2fc_l2_rcv_thread+0x1af/0x3a0 [bnx2fc]
[ 1391.699250]  ? bnx2fc_ulp_init+0xc0/0xc0 [bnx2fc]
[ 1391.699258]  kthread+0x364/0x420
[ 1391.699263]  ? _raw_spin_unlock_irq+0x24/0x50
[ 1391.699268]  ? set_kthread_struct+0x100/0x100
[ 1391.699273]  ret_from_fork+0x22/0x30

Restore the old get_cpu/put_cpu code with some modifications to reduce the
size of the critical section.

Link: https://lore.kernel.org/r/20220124145110.442335-1-jmeneghi@redhat.com
Fixes: d576a5e80c ("bnx2fc: Improve stats update mechanism")
Tested-by: Guangwu Zhang <guazhang@redhat.com>
Acked-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: John Meneghini <jmeneghi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-01-31 12:17:53 -05:00
Ajish Koshy
c26b85ea16 scsi: pm80xx: Fix double completion for SATA devices
Current code handles completions for SATA devices in mpi_sata_completion()
and mpi_sata_event().

However, at the time when any SATA event happens, for almost all the event
types, the command is still in the target. It is therefore incorrect to
complete the task in sata_event().

There are some events for which we get sata_completions, some need recovery
procedure and others abort. All the tasks must be completed via
sata_completion() path.

Removed the task done related code from sata_events().  For tasks where we
don't get completions, let top layer call abort() to abort the command post
timeout.

Link: https://lore.kernel.org/r/20220124082255.86223-1-Ajish.Koshy@microchip.com
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Co-developed-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Ajish Koshy <Ajish.Koshy@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-01-31 12:14:49 -05:00
Douglas Anderson
61a6262f95 arm64: dts: qcom: sc7280: Move herobrine-r0 to its own dts
The upcoming herobrine-r1 board is really not very similar to
herobrine-r0. Let's get rid of the "herobrine.dtsi" file and stick all
the content in the -r0 dts file directly. We'll also rename the dts so
it's obvious that it's just for -r0.

While renaming, let's actually name the file so it's obvious that
"herobrine" is both the name of the board and the name of the
"baseboard". In other words "herobrine" is an actual board but also
often used as the name of a whole class of similar boards that forked
from a design. While "herobrine-herobrine" is a bit of mouthful it
makes it more obvious which things are part of an actual board rather
than the baseboard.

NOTE: herobrine-rev0's days are likely doomed and this device tree is
likely to be deleted in the future.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220125144316.v2.2.Id9716db8c133bcb14c9413144048f8d00ae2674f@changeid
2022-01-31 10:53:41 -06:00
Douglas Anderson
142a4d995c arm64: dts: qcom: sc7280: Fix gmu unit address
When processing sc7280 device trees, I can see:

  Warning (simple_bus_reg): /soc@0/gmu@3d69000:
    simple-bus unit address format error, expected "3d6a000"

There's a clear typo in the node name. Fix it.

Fixes: 96c471970b ("arm64: dts: qcom: sc7280: Add gpu support")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220125144316.v2.1.I19f60014e9be4b9dda4d66b5d56ef3d9600b6e10@changeid
2022-01-31 10:53:40 -06:00
Taniya Das
7b1e0a8773 arm64: dts: qcom: sc7280: Add camcc clock node
Add the camera clock controller node for SC7280 SoC.

Signed-off-by: Taniya Das <tdas@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220124184437.9278-1-tdas@codeaurora.org
2022-01-31 10:53:40 -06:00
Kuogee Hsieh
fc6b1225d2 arm64: dts: qcom: sc7280: Add Display Port node
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1640361793-26486-5-git-send-email-quic_sbillaka@quicinc.com
2022-01-31 10:53:30 -06:00
Sankeerth Billakanti
25940788d1 arm64: dts: qcom: sc7280: add edp display dt nodes
Add edp controller and phy DT nodes for sc7280.

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Signed-off-by: Krishna Manikandan <quic_mkrishn@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1640361793-26486-4-git-send-email-quic_sbillaka@quicinc.com
2022-01-31 10:49:57 -06:00
Rajeev Nandan
43137272f0 arm64: dts: qcom: sc7280: Add DSI display nodes
Add DSI controller and PHY nodes for sc7280.

Signed-off-by: Rajeev Nandan <quic_rajeevny@quicinc.com>
Signed-off-by: Krishna Manikandan <quic_mkrishn@quicinc.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1640361793-26486-3-git-send-email-quic_sbillaka@quicinc.com
2022-01-31 10:49:57 -06:00
Krishna Manikandan
fcb68dfda5 arm64: dts: qcom: sc7280: add display dt nodes
Add mdss and mdp DT nodes for sc7280.

Signed-off-by: Krishna Manikandan <quic_mkrishn@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1640361793-26486-2-git-send-email-quic_sbillaka@quicinc.com
2022-01-31 10:49:57 -06:00
Stephen Boyd
bb59462e41 arm64: dts: qcom: sc7180: Add board regulators for MIPI camera trogdor boards
Some trogdor boards have on-board regulators for the MIPI camera
components. Add nodes describing these regulators so boards with these
supplies can consume them.

Cc: Douglas Anderson <dianders@chromium.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211216044529.733652-1-swboyd@chromium.org
2022-01-31 10:49:52 -06:00
Sandeep Maheswaram
1b968998a3 arm64: dts: qcom: sc7280: Move USB2 controller nodes from common dtsi to SKU1
Move USB2 controller and phy nodes from common dtsi file as it is
required only for SKU1 board and change the mode to host mode as
it will be used in host mode for SKU1.

Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1638422248-24221-1-git-send-email-quic_c_sanm@quicinc.com
2022-01-31 10:49:48 -06:00
Christophe JAILLET
9987151a90
drm/bridge: lt9611: Fix an error handling path in lt9611_probe()
If lt9611_audio_init() fails, some resources still need to be released
before returning an error code.

Add the missing goto the error handling path.

Fixes: 23278bf54a ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/9c20eb74d42f6d4128e58e3e46aa320482472b77.1643468761.git.christophe.jaillet@wanadoo.fr
Reviewed-by: Robert Foss <robert.foss@linaro.org>
2022-01-31 17:25:51 +01:00
Miquel Raynal
e02dacd3a2 mtd: rawnand: Fix misuses of of_match_node()
On non-OF enabled platforms (CONFIG_OF is not set), of_match_node() will
expand to NULL. The of_device_id array pointed by the macro will then be
left unused. Let's mark the array __maybe_unused in this case to prevent
compiler warnings.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/linux-mtd/20220127110802.1064963-1-miquel.raynal@bootlin.com
2022-01-31 17:18:05 +01:00
Miquel Raynal
3f26d1bf90 mtd: Fix misuses of of_match_ptr()
of_match_ptr() either expands to NULL if !CONFIG_OF, or is transparent
otherwise. There are several drivers using this macro which keep their
of_device_id array enclosed within an #ifdef CONFIG_OF check, these are
considered fine. However, When misused, the of_device_id array pointed
by this macro will produce a warning because it is finally unused when
compiled without OF support.

A number of fixes are possible:
- Always depend on CONFIG_OF, but this will not always work and may
  break boards.
- Enclose the compatible array by #ifdef's, this may save a bit of
  memory but will reduce build coverage.
- Tell the compiler the array may be unused, if this can be avoided,
  let's not do this.
- Just drop the macro, setting the of_device_id array for a non OF
  enabled platform is not an issue, it will just be unused.

The latter solution seems the more appropriate, so let's use it.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/linux-mtd/20220127110631.1064705-1-miquel.raynal@bootlin.com
2022-01-31 17:18:03 +01:00
david regan
36415a7964 mtd: rawnand: brcmnand: Fixed incorrect sub-page ECC status
The brcmnand driver contains a bug in which if a page (example 2k byte)
is read from the parallel/ONFI NAND and within that page a subpage (512
byte) has correctable errors which is followed by a subpage with
uncorrectable errors, the page read will return the wrong status of
correctable (as opposed to the actual status of uncorrectable.)

The bug is in function brcmnand_read_by_pio where there is a check for
uncorrectable bits which will be preempted if a previous status for
correctable bits is detected.

The fix is to stop checking for bad bits only if we already have a bad
bits status.

Fixes: 27c5b17cd1 ("mtd: nand: add NAND driver "library" for Broadcom STB NAND controller")
Signed-off-by: david regan <dregan@mail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/trinity-478e0c09-9134-40e8-8f8c-31c371225eda-1643237024774@3c-app-mailcom-lxa02
2022-01-31 17:08:56 +01:00
Kalle Valo
fcda1cb816 MAINTAINERS: add DT bindings files for ath10k and ath11k
The DT bindings files were missing for ath10k and ath11k so add them now.

Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220128135841.1926-4-kvalo@kernel.org
2022-01-31 17:53:18 +02:00
Kalle Valo
e2ac75e061 MAINTAINERS: hand over ath9k maintainership to Toke
In practise I have been the only maintainer for ath9k for some time now but I
don't really have time for it. Luckily Toke is willing to look after so mark
him as maintainer. Thanks Toke!

Signed-off-by: Kalle Valo <kvalo@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220128135841.1926-3-kvalo@kernel.org
2022-01-31 17:53:17 +02:00
Kalle Valo
3451613c33 MAINTAINERS: change Loic as wcn36xx maintainer
I don't have time for being wcn36xx maintainer but Loic is willing to step up.
Thanks Loic!

Also remove Eugene's old tree, it has not been used for a long time.

Signed-off-by: Kalle Valo <kvalo@kernel.org>
Acked-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220128135841.1926-2-kvalo@kernel.org
2022-01-31 17:53:17 +02:00
Kalle Valo
533da5077b MAINTAINERS: mark ath6kl as orphan
I don't have time to maintain ath6kl anymore so mark it as orphan.

Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220128135841.1926-1-kvalo@kernel.org
2022-01-31 17:53:16 +02:00
Guoqing Jiang
99e675d473 iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()
After commit e3beca48a4 ("irqdomain/treewide: Keep firmware node
unconditionally allocated"). For tear down scenario, fn is only freed
after fail to allocate ir_domain, though it also should be freed in case
dmar_enable_qi returns error.

Besides free fn, irq_domain and ir_msi_domain need to be removed as well
if intel_setup_irq_remapping fails to enable queued invalidation.

Improve the rewinding path by add out_free_ir_domain and out_free_fwnode
lables per Baolu's suggestion.

Fixes: e3beca48a4 ("irqdomain/treewide: Keep firmware node unconditionally allocated")
Suggested-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Link: https://lore.kernel.org/r/20220119063640.16864-1-guoqing.jiang@linux.dev
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20220128031002.2219155-3-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2022-01-31 16:53:09 +01:00
John Garry
30209b9317 iommu: Fix some W=1 warnings
The code is mostly free of W=1 warning, so fix the following:

drivers/iommu/iommu.c:996: warning: expecting prototype for iommu_group_for_each_dev(). Prototype was for __iommu_group_for_each_dev() instead
drivers/iommu/iommu.c:3048: warning: Function parameter or member 'drvdata' not described in 'iommu_sva_bind_device'
drivers/iommu/ioasid.c:354: warning: Function parameter or member 'ioasid' not described in 'ioasid_get'
drivers/iommu/omap-iommu.c:1098: warning: expecting prototype for omap_iommu_suspend_prepare(). Prototype was for omap_iommu_prepare() instead

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/1643366673-26803-1-git-send-email-john.garry@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2022-01-31 16:49:54 +01:00
Colin Ian King
fe683faecc cw1200: wsm: make array queue_id_to_wmm_aci static const
Don't populate the read-only array queue_id_to_wmm_aci on the stack
but instead make it static. Also makes the object code a little smaller.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220109230921.58766-1-colin.i.king@gmail.com
2022-01-31 17:49:17 +02:00