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37d55c92e9db3f7fd3772199ffdfe782fc753fc1
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9 Commits

Author SHA1 Message Date
Jiri Slaby (SUSE)
37d55c92e9 serial: drop SERIAL_8250_DEPRECATED_OPTIONS 
In 3.7, 8250 was unintentionally renamed to 8250_core. This happened in
the commit 835d844d1a (8250_pnp: do pnp probe before legacy probe).
This made 8250.<xxxx> module options effectively defunct. Instead,
8250_core.<xxxx> worked.

In 3.9, the commit f2b8dfd9e4 (serial: 8250: Keep 8250.<xxxx> module
options functional after driver rename) made the original options work
again by introducing a hack.

Later in 3.9, the commit 9196d8acd7 (TTY: 8250, revert module name
change) changed the module name back to 8250 (from 8250_core). Since
then, the hack was there to support the transient 8250_core.<xxxx>
options. Those were present only in the 3.7..3.9 range.

These transient options were deprecated by 9326b047e4 (TTY: 8250,
deprecated 8250_core.* options) in v3.9 too.

Now, after those 12 years, it is time to get rid of this hack
completely.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://patch.msgid.link/20251119092457.826789-4-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2025-11-21 18:31:27 +01:00
Greg Kroah-Hartman
d21b26cad3 Merge 6.17-rc6 into tty-next 
We need the tty/serial fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2025-09-15 08:27:31 +02:00
Jiri Slaby (SUSE)
54faf0473b serial: 8250_rsa: use guard()s 
Having all the new guards, use them in the 8250_rsa code. This improves
readability, makes error handling easier, and marks locked portions of
code explicit.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250814072456.182853-14-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2025-08-17 12:46:26 +02:00
Vlastimil Babka
6d3c3ca4c7 module: Rename EXPORT_SYMBOL_GPL_FOR_MODULES to EXPORT_SYMBOL_FOR_MODULES 
Christoph suggested that the explicit _GPL_ can be dropped from the
module namespace export macro, as it's intended for in-tree modules
only. It would be possible to restrict it technically, but it was
pointed out [2] that some cases of using an out-of-tree build of an
in-tree module with the same name are legitimate. But in that case those
also have to be GPL anyway so it's unnecessary to spell it out in the
macro name.

Link: https://lore.kernel.org/all/aFleJN_fE-RbSoFD@infradead.org/ [1]
Link: https://lore.kernel.org/all/CAK7LNATRkZHwJGpojCnvdiaoDnP%2BaeUXgdey5sb_8muzdWTMkA@mail.gmail.com/ [2]
Suggested-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Shivank Garg <shivankg@amd.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Nicolas Schier <n.schier@avm.de>
Reviewed-by: Daniel Gomez <da.gomez@samsung.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Link: https://lore.kernel.org/20250808-export_modules-v4-1-426945bcc5e1@suse.cz
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2025-08-11 16:16:36 +02:00
Jiri Slaby (SUSE)
b20d6576cd serial: 8250: export RSA functions 
The RSA functions moved by the below commit to 8250_rsa.c are used in
8250_base.c. Since that can be a module (when CONFIG_SERIAL_8250=m),
this causes build failures:
  ERROR: modpost: "rsa_autoconfig" [drivers/tty/serial/8250/8250_base.ko] undefined!
  ERROR: modpost: "rsa_reset" [drivers/tty/serial/8250/8250_base.ko] undefined!
  ERROR: modpost: "rsa_disable" [drivers/tty/serial/8250/8250_base.ko] undefined!
  ERROR: modpost: "rsa_enable" [drivers/tty/serial/8250/8250_base.ko] undefined!

Fix them by exporting the functions. But only to the base module using
EXPORT_SYMBOL_GPL_FOR_MODULES(). (And not to the whole world.)

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/all/20250619165607.33403e19@canb.auug.org.au/
Fixes: 5a128fb475 ("serial: 8250: move RSA functions to 8250_rsa.c")
Link: https://lore.kernel.org/r/20250623061035.436414-1-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2025-06-23 08:23:37 +02:00
Jiri Slaby (SUSE)
5a128fb475 serial: 8250: move RSA functions to 8250_rsa.c 
They are RSA-specific, so should live in a preexisting 8250_rsa.c. Move
them there.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20250611100319.186924-13-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2025-06-17 13:42:34 +02:00
Jiri Slaby (SUSE)
1404d3509c serial: switch uart_port::iotype to enum uart_iotype 
The inline-defined constants look weird. Instead, define a proper enum
for them and type uart_port::iotype as that enum. This allows for proper
checking in switch-case labels (somewhere, a default or UPIO_UNKNOWN
label needs to be added/handled).

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250425111315.1036184-4-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2025-04-25 13:46:31 +02:00
Jiri Slaby (SUSE)
6b879bc903 serial: 8250_rsa: simplify rsa8250_{request/release}_resource() 
* Use already defined 'port' for fetching start/offset, and size.
* Return from the switch immediately -- so it is clear what is returned
  and when.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250317070046.24386-29-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2025-03-20 08:00:52 -07:00
Andy Shevchenko
c0e1aa60d6 serial: 8250: Extract RSA bits 
Extract RSA bits to a separate module for better maintenance
and to reduce a churn on 8250_core part changes when it's solely
related to the former. No functional changes intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240506140308.4040735-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2024-06-04 14:01:50 +02:00