linux-stable.git/drivers/tty/serial, branch v6.6.2

serial: core: Fix runtime PM handling for pending tx

2023-11-08T10:56:24+00:00

commit 6f699743aebf07538e506a46c5965eb8bdd2c716 upstream.

Richard reported that a serial port may end up sometimes with tx data
pending in the buffer for long periods of time.

Turns out we bail out early on any errors from pm_runtime_get(),
including -EINPROGRESS. To fix the issue, we need to ignore -EINPROGRESS
as we only care about the runtime PM usage count at this point. We check
for an active runtime PM state later on for tx.

Fixes: 84a9582fd203 ("serial: core: Start managing serial controllers to enable runtime PM")
Cc: stable 
Reported-by: Richard Purdie 
Cc: Bruce Ashfield 
Cc: Mikko Rapeli 
Cc: Paul Gortmaker 
Cc: Randy MacLeod 
Signed-off-by: Tony Lindgren 
Tested-by: Richard Purdie 
Link: https://lore.kernel.org/r/20231023074856.61896-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman

tty: 8250: Add Brainboxes Oxford Semiconductor-based quirks

2023-11-08T10:56:24+00:00

commit e4876dacaca46a1b09f9b417480924ab12019a5b upstream.

Some of the later revisions of the Brainboxes PX cards are based
on the Oxford Semiconductor chipset. Due to the chip's unique setup
these cards need to be initialised.
Previously these were tested against a reference card with the same broken
baudrate on another PC, cancelling out the effect. With this patch they
work and can transfer/receive find against an FTDI-based device.

Add all of the cards which require this setup to the quirks table.
Thanks to Maciej W. Rozycki for clarification on this chip.

Fixes: ef5a03a26c87 ("tty: 8250: Add support for Brainboxes PX cards.")
Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams 
Link: https://lore.kernel.org/r/DU0PR02MB7899D222A4AB2A4E8C57108FC4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman

tty: 8250: Add support for Intashield IX cards

2023-11-08T10:56:24+00:00

commit 62d2ec2ded278c7512d91ca7bf8eb9bac46baf90 upstream.

Add support for the IX-100, IX-200 and IX-400 serial cards.

Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams 
Link: https://lore.kernel.org/r/DU0PR02MB7899614E5837E82A03272A4BC4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman

tty: 8250: Add support for additional Brainboxes PX cards

2023-11-08T10:56:23+00:00

commit 9604884e592cd04ead024c9737c67a77f175cab9 upstream.

Add support for some more of the Brainboxes PX (PCIe) range
of serial cards, namely
PX-275/PX-279, PX-475 (serial port, not LPT), PX-820,
PX-803/PX-857 (additional ID).

Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams 
Link: https://lore.kernel.org/r/DU0PR02MB78996BEC353FB346FC35444BC4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman

tty: 8250: Fix up PX-803/PX-857

2023-11-08T10:56:23+00:00

commit ee61337b934c99c2611e0a945d592019b2e00c82 upstream.

The PX-803/PX-857 are variants of each other, add a note.
Additionally fix up the port counts for the card (2, not 1).

Fixes: ef5a03a26c87 ("tty: 8250: Add support for Brainboxes PX cards.")
Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams 
Link: https://lore.kernel.org/r/DU0PR02MB789978C8ED872FB4B014E132C4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman

tty: 8250: Fix port count of PX-257

2023-11-08T10:56:23+00:00

commit d0ff5b24c2f112f29dea4c38b3bac9597b1be9ba upstream.

The port count of the PX-257 Rev3 is actually 2, not 4.

Fixes: ef5a03a26c87 ("tty: 8250: Add support for Brainboxes PX cards.")
Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams 
Link: https://lore.kernel.org/r/DU0PR02MB7899C804D9F04E727B5A0E8FC4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman

tty: 8250: Add support for Intashield IS-100

2023-11-08T10:56:23+00:00

commit 4d994e3cf1b541ff32dfb03fbbc60eea68f9645b upstream.

Add support for the Intashield IS-100 1 port serial card.

Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams 
Link: https://lore.kernel.org/r/DU0PR02MB7899A0E0CDAA505AF5A874CDC4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman

tty: 8250: Add support for Brainboxes UP cards

2023-11-08T10:56:23+00:00

commit 2c6fec1e1532f15350be7e14ba6b88a39d289fe4 upstream.

Add support for the Brainboxes UP (powered PCI) range of
cards, namely UP-189, UP-200, UP-869 and UP-880.

Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams 
Link: https://lore.kernel.org/r/DU0PR02MB7899B5B59FF3D8587E88C117C4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman

tty: 8250: Add support for additional Brainboxes UC cards

2023-11-08T10:56:23+00:00

commit c563db486db7d245c0e2f319443417ae8e692f7f upstream.

Add device IDs for some more Brainboxes UC cards, namely
UC-235/UC-246, UC-253/UC-734, UC-302, UC-313, UC-346, UC-357,
UC-607 and UC-836.

Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams 
Link: https://lore.kernel.org/r/DU0PR02MB789969998A6C3FAFCD95C85DC4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman

tty: 8250: Remove UC-257 and UC-431

2023-11-08T10:56:22+00:00

commit 33092fb3af51deb80849e90a17bada44bbcde6b3 upstream.

The UC-257 is a serial + LPT card, so remove it from this driver.
A patch has been submitted to add it to parport_serial instead.

Additionaly, the UC-431 does not use this card ID, only the UC-420
does. The 431 is a 3-port card and there is no generic 3-port configuration
available, so remove reference to it from this driver.

Fixes: 152d1afa834c ("tty: Add support for Brainboxes UC cards.")
Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams 
Link: https://lore.kernel.org/r/DU0PR02MB78995ADF7394C74AD4CF3357C4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman