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19 Commits

Author SHA1 Message Date
Wei Yongjun
ff62255a2a sparc64: vcc: Fix error return code in vcc_probe() 
Fix to return negative error code -ENOMEM from the error handling
case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20200427122415.47416-1-weiyongjun1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-04-28 14:38:54 +02:00
Greg Kroah-Hartman
f16aa97d3f tty: fix up a few remaining files without SPDX identifiers 
There were a few straggling files under drivers/tty/ that did not have
any SPDX identifier either because they entered the tree recently, or
they somehow missed the mass-tagging of commit b24413180f ("License
cleanup: add SPDX GPL-2.0 license identifier to files with no license")

This commit follows the same rule as b24413180f ("License cleanup: add
SPDX GPL-2.0 license identifier to files with no license") where files
without any specified license in them fall under GPL-2.0 as the correct
license for the individual file.  Add that identifier to these remaining
files so that we don't have to guess at the license of them in the
future.

Cc: Jiri Slaby <jslaby@suse.com>
Cc: "David S. Miller" <davem@davemloft.net>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2019-04-04 18:48:43 +02:00
Kees Cook
4790b6dc7a tty: vcc: Convert timers to use timer_setup() 
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: sparclinux@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-11-04 12:01:54 +01:00
Allen Pais
a386ab2b28 drivers: tty: vcc: use setup_timer() helper. 
Use setup_timer function instead of initializing timer with the
    function and data fields.

Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-10-03 20:28:36 +02:00
Bhumika Goyal
5bd0ea9107 sparc64: vcc: make ktermios const 
Make this const as it is not modified anywhere.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-29 15:10:44 -07:00
Dan Carpenter
c6b4ee9eba sparc64: vcc: Check for IS_ERR() instead of NULL 
The tty_alloc_driver() function never returns NULL, it returns error
pointers on error.

Fixes: ce808b7463 ("sparc64: vcc: TTY driver initialization and cleanup")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-28 15:39:55 -07:00
Jag Raman
8f03f948ba sparc64: vcc: Add install & cleanup TTY operations 
Add handlers to support TTY install & cleanup operations

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:54 -07:00
Jag Raman
e942e5775c sparc64: vcc: Add break_ctl TTY operation 
Add handler to support TTY break_ctl operation

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:54 -07:00
Jag Raman
aeee7debf3 sparc64: vcc: Add chars_in_buffer TTY operation 
Add handler to support TTY chars_in_buffer operation

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:54 -07:00
Jag Raman
cf0452600b sparc64: vcc: Add write & write_room TTY operations 
Add handlers to support TTY write & write_room operations

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:53 -07:00
Jag Raman
6a3ff25bc6 sparc64: vcc: Add hangup TTY operation 
Add handler to support TTY hangup operation

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:53 -07:00
Jag Raman
63a7174484 sparc64: vcc: Add open & close TTY operations 
Add handlers to support TTY open & close operations

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:53 -07:00
Jag Raman
103b9b0bc9 sparc64: vcc: Enable LDC event processing engine 
Enable event processing engine to handle LDC events

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:52 -07:00
Jag Raman
f8c553354e sparc64: vcc: Add RX & TX timer for delayed LDC operation 
Add RX & TX timers to perform delayed/asynchronous LDC
read and write operations.

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:52 -07:00
Jag Raman
8868e44a56 sparc64: vcc: Create sysfs attribute group 
Create sysfs attribute group to show the domain name and
send break command.

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:52 -07:00
Jag Raman
5d171050e2 sparc64: vcc: Enable VCC port probe and removal 
Enables VCC port probe and removal to initialize and terminate
VCC ports respectively. When a device/port matching the VCC driver
is added, the probe function is invoked along with a reference
to the device. remove function is called when the device is
removed.

Also add APIs to cache and retrieve VCC ports from a VCC table

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:51 -07:00
Jag Raman
ce808b7463 sparc64: vcc: TTY driver initialization and cleanup 
Allocate and register TTY driver during module init. Cleanup
TTY driver during module exit.

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:51 -07:00
Jag Raman
f283ebd564 sparc64: vcc: Add VCC debug message macros 
Add C macros to print debug messages from VCC module

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:51 -07:00
Jag Raman
55bd2133fc sparc64: vcc: Enable VCC module in linux 
Enables the Virtual Console Concentrator (VCC) module
in linux kernel

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-08-15 21:33:50 -07:00