linux-stable.git/include/linux, branch linux-4.19.y

block: return unsigned int from bdev_io_min

2024-12-05T09:59:42+00:00

[ Upstream commit 46fd48ab3ea3eb3bb215684bd66ea3d260b091a9 ]

The underlying limit is defined as an unsigned int, so return that from
bdev_io_min as well.

Fixes: ac481c20ef8f ("block: Topology ioctls")
Signed-off-by: Christoph Hellwig 
Reviewed-by: Martin K. Petersen 
Reviewed-by: John Garry 
Link: https://lore.kernel.org/r/20241119072602.1059488-1-hch@lst.de
Signed-off-by: Jens Axboe 
Signed-off-by: Sasha Levin

netpoll: Use rcu_access_pointer() in netpoll_poll_lock

2024-12-05T09:59:33+00:00

[ Upstream commit a57d5a72f8dec7db8a79d0016fb0a3bdecc82b56 ]

The ndev->npinfo pointer in netpoll_poll_lock() is RCU-protected but is
being accessed directly for a NULL check. While no RCU read lock is held
in this context, we should still use proper RCU primitives for
consistency and correctness.

Replace the direct NULL check with rcu_access_pointer(), which is the
appropriate primitive when only checking for NULL without dereferencing
the pointer. This function provides the necessary ordering guarantees
without requiring RCU read-side protection.

Fixes: bea3348eef27 ("[NET]: Make NAPI polling independent of struct net_device objects.")
Signed-off-by: Breno Leitao 
Reviewed-by: Michal Kubiak 
Link: https://patch.msgid.link/20241118-netpoll_rcu-v1-2-a1888dcb4a02@debian.org
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

time: Fix references to _msecs_to_jiffies() handling of values

2024-12-05T09:59:31+00:00

[ Upstream commit 92b043fd995a63a57aae29ff85a39b6f30cd440c ]

The details about the handling of the "normal" values were moved
to the _msecs_to_jiffies() helpers in commit ca42aaf0c861 ("time:
Refactor msecs_to_jiffies"). However, the same commit still mentioned
__msecs_to_jiffies() in the added documentation.

Thus point to _msecs_to_jiffies() instead.

Fixes: ca42aaf0c861 ("time: Refactor msecs_to_jiffies")
Signed-off-by: Miguel Ojeda 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/all/20241025110141.157205-2-ojeda@kernel.org
Signed-off-by: Sasha Levin

PCI: Add function 0 DMA alias quirk for Glenfly Arise chip

2024-11-08T15:19:19+00:00

commit 9246b487ab3c3b5993aae7552b7a4c541cc14a49 upstream.

Add DMA support for audio function of Glenfly Arise chip, which uses
Requester ID of function 0.

Link: https://lore.kernel.org/r/CA2BBD087345B6D1+20240823095708.3237375-1-wangyuli@uniontech.com
Signed-off-by: SiyuLi 
Signed-off-by: WangYuli 
[bhelgaas: lower-case hex to match local code, drop unused Device IDs]
Signed-off-by: Bjorn Helgaas 
Reviewed-by: Takashi Iwai 
Signed-off-by: Greg Kroah-Hartman

clk: Provide new devm_clk helpers for prepared and enabled clocks

2024-11-08T15:19:18+00:00

[ Upstream commit 7ef9651e9792b08eb310c6beb202cbc947f43cab ]

When a driver keeps a clock prepared (or enabled) during the whole
lifetime of the driver, these helpers allow to simplify the drivers.

Reviewed-by: Jonathan Cameron 
Reviewed-by: Alexandru Ardelean 
Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20220520075737.758761-4-u.kleine-koenig@pengutronix.de
Signed-off-by: Stephen Boyd 
Stable-dep-of: a6191a3d1811 ("gpio: aspeed: Use devm_clk api to manage clock source")
Signed-off-by: Sasha Levin

clk: Add (devm_)clk_get_optional() functions

2024-11-08T15:19:18+00:00

[ Upstream commit 60b8f0ddf1a927ef02141a6610fd52575134f821 ]

This adds clk_get_optional() and devm_clk_get_optional() functions to get
optional clocks.

They behave the same as (devm_)clk_get() except where there is no clock
producer. In this case, instead of returning -ENOENT, the function
returns NULL. This makes error checking simpler and allows
clk_prepare_enable, etc to be called on the returned reference
without additional checks.

Signed-off-by: Phil Edworthy 
Reviewed-by: Andy Shevchenko 
Cc: Russell King 
[sboyd@kernel.org: Document in devres.txt]
Signed-off-by: Stephen Boyd 
Stable-dep-of: a6191a3d1811 ("gpio: aspeed: Use devm_clk api to manage clock source")
Signed-off-by: Sasha Levin

jbd2: introduce/export functions jbd2_journal_submit|finish_inode_data_buffers()

2024-11-08T15:19:06+00:00

[ Upstream commit aa3c0c61f62d682259e3e66cdc01846290f9cd6c ]

Export functions that implement the current behavior done
for an inode in journal_submit|finish_inode_data_buffers().

No functional change.

Signed-off-by: Mauricio Faria de Oliveira 
Suggested-by: Jan Kara 
Reviewed-by: Jan Kara 
Reviewed-by: Andreas Dilger 
Link: https://lore.kernel.org/r/20201006004841.600488-2-mfo@canonical.com
Signed-off-by: Theodore Ts'o 
Stable-dep-of: 20cee68f5b44 ("ext4: clear EXT4_GROUP_INFO_WAS_TRIMMED_BIT even mount with discard")
Signed-off-by: Sasha Levin

ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance()

2024-09-12T09:02:55+00:00

[ Upstream commit bc1a72afdc4a91844928831cac85731566e03bc6 ]

When the ring buffer was first created, the iterator followed the normal
producer/consumer operations where it had both a peek() operation, that just
returned the event at the current location, and a read(), that would return
the event at the current location and also increment the iterator such that
the next peek() or read() will return the next event.

The only use of the ring_buffer_read() is currently to move the iterator to
the next location and nothing now actually reads the event it returns.
Rename this function to its actual use case to ring_buffer_iter_advance(),
which also adds the "iter" part to the name, which is more meaningful. As
the timestamp returned by ring_buffer_read() was never used, there's no
reason that this new version should bother having returning it. It will also
become a void function.

Link: http://lkml.kernel.org/r/20200317213416.018928618@goodmis.org

Signed-off-by: Steven Rostedt (VMware) 
Stable-dep-of: 49aa8a1f4d68 ("tracing: Avoid possible softlockup in tracing_iter_reset()")
Signed-off-by: Sasha Levin

fbcon: Prevent that screen size is smaller than font size

2024-09-04T11:13:08+00:00

commit e64242caef18b4a5840b0e7a9bff37abd4f4f933 upstream.

We need to prevent that users configure a screen size which is smaller than the
currently selected font size. Otherwise rendering chars on the screen will
access memory outside the graphics memory region.

This patch adds a new function fbcon_modechange_possible() which
implements this check and which later may be extended with other checks
if necessary.  The new function is called from the FBIOPUT_VSCREENINFO
ioctl handler in fbmem.c, which will return -EINVAL if userspace asked
for a too small screen size.

Signed-off-by: Helge Deller 
Reviewed-by: Geert Uytterhoeven 
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Hugo SIMELIERE 
Signed-off-by: Greg Kroah-Hartman

block: use "unsigned long" for blk_validate_block_size().

2024-09-04T11:13:04+00:00

commit 37ae5a0f5287a52cf51242e76ccf198d02ffe495 upstream.

Since lo_simple_ioctl(LOOP_SET_BLOCK_SIZE) and ioctl(NBD_SET_BLKSIZE) pass
user-controlled "unsigned long arg" to blk_validate_block_size(),
"unsigned long" should be used for validation.

Signed-off-by: Tetsuo Handa 
Reviewed-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/9ecbf057-4375-c2db-ab53-e4cc0dff953d@i-love.sakura.ne.jp
Signed-off-by: Jens Axboe 
Signed-off-by: David Hunter 
Signed-off-by: Greg Kroah-Hartman