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6 Commits

Author SHA1 Message Date
Andy Shevchenko
73a3d4f418 tty: rpmsg: Define tty name via constant string literal 
Driver uses already twice the same string literal.

Define it in one place, so every user will have this
name consistent.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211025135148.53944-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2021-10-26 19:19:42 +02:00
Andy Shevchenko
88af70be4a tty: rpmsg: Add pr_fmt() to prefix messages 
Make all messages to be prefixed in a unified way.
Add pr_fmt() to achieve this.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211025135148.53944-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2021-10-26 19:19:41 +02:00
Andy Shevchenko
8673ef7bd9 tty: rpmsg: Use dev_err_probe() in ->probe() 
It's fine to use dev_err_probe() in ->probe() even if we know
it won't be deferred.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211025135148.53944-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2021-10-26 19:19:41 +02:00
Andy Shevchenko
408a507996 tty: rpmsg: Unify variable used to keep an error code 
In some ret is used, in the other err. Let's unify it across the driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211025135148.53944-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2021-10-26 19:19:41 +02:00
Andy Shevchenko
0572da285d tty: rpmsg: Assign returned id to a local variable 
Instead of putting garbage in the data structure, assign allocated id
or an error code to a temporary variable. This makes code cleaner.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211025135148.53944-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2021-10-26 19:19:41 +02:00
Arnaud Pouliquen
7c0408d805 tty: add rpmsg driver 
This driver exposes a standard TTY interface on top of the rpmsg
framework through a rpmsg service.

This driver supports multi-instances, offering a /dev/ttyRPMSGx entry
per rpmsg endpoint.

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Link: https://lore.kernel.org/r/20211015094701.5732-3-arnaud.pouliquen@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2021-10-21 12:35:35 +02:00