kernel/git/stable/linux.git/drivers/char/hvc_vio.c, branch master

tty: move hvc drivers to drivers/tty/hvc/

2011-01-13T20:03:00+00:00

As requested by Arnd Bergmann, the hvc drivers are now moved to the drivers/tty/hvc/ directory. The virtio_console.c driver was also moved, as it required the hvc_console.h file to be able to be built, and it really is a hvc driver. Cc: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman

drivers/char/hvc_vio: Use static const char arrays

2010-11-29T04:48:18+00:00

Signed-off-by: Joe Perches Reviewed-by: Stephen Rothwell Signed-off-by: Benjamin Herrenschmidt

hvc_console: make the ops pointer const.

2010-02-24T03:52:32+00:00

This is nicer for modern R/O protection. And noone needs it non-const, so constify the callers as well. Signed-off-by: Rusty Russell Signed-off-by: Amit Shah To: Christian Borntraeger Cc: linuxppc-dev@ozlabs.org

hvc_console: Add init and exit to hvc_vio

2009-08-28T04:24:11+00:00

Trivial patch which adds the __init/__exit macros to the module_init/ module_exit functions of char/hvc_vio.c Please have a look at the small patch and either pull it through your tree, or please ack' it so Jiri can pull it through the trivial tree. linux version 2.6.31-rc6 - linus git tree, Do 20. Aug 22:26:06 CEST 2009 Signed-off-by: Peter Huewe Signed-off-by: Benjamin Herrenschmidt

drivers/hvc: Add missing __devexit_p()

2009-06-16T04:15:44+00:00

The remove function uses __devexit, so the .remove assignment needs __devexit_p() to fix a build error with hotplug disabled. Signed-off-by: Mike Frysinger Signed-off-by: Andrew Morton Signed-off-by: Benjamin Herrenschmidt

drivers/hvc: Add missing of_node_put

2008-12-03T10:04:09+00:00

of_node_put is needed before discarding a value received from of_find_node_by_name, e.g., in error handling code or when the device node is no longer used. The semantic match that catches the bug is as follows: (http://www.emn.fr/x-info/coccinelle/) // @r exists@ local idexpression struct device_node *n; position p1, p2; statement S1,S2; expression E,E1; expression *ptr != NULL; @@ ( if (!(n@p1 = of_find_node_by_name(...))) S1 | n@p1 = of_find_node_by_name(...) ) <... when != of_node_put(n) when != if (...) { <+... of_node_put(n) ...+> } when != true !n || ... when != n = E when != E = n if (!n || ...) S2 ...> ( return \(0\|<+...n...+>\|ptr\); | return@p2 ...; | n = E1 | E1 = n ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s of_find_node_by_name %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // Signed-off-by: Nicolas Palix Signed-off-by: Julia Lawall Acked-by: Stephen Rothwell Signed-off-by: Paul Mackerras

hvc_console: Add a hangup notifier for backends

2008-10-21T23:59:54+00:00

I have added a hangup notifier that can be used by hvc console backends to handle a tty hangup. The default irq hangup notifier calls the notifier_del_irq() for compatibility. Acked-by: Christian Borntraeger Signed-off-by: Hendrik Brueckner Signed-off-by: Benjamin Herrenschmidt

hvc_console: rework setup to replace irq functions with callbacks

2008-07-25T02:06:06+00:00

This patch tries to change hvc_console to not use request_irq/free_irq if the backend does not use irqs. This allows virtio_console to use hvc_console without having a linker reference to request_irq/free_irq. In addition, together with patch 2/3 it improves the performance for virtio console input. (an earlier version of this patch was tested by Yajin on lguest) The irq specific code is moved to hvc_irq.c and selected by the drivers that use irqs (System p, System i, XEN). I replaced "int irq" with the opaque "int data". The request_irq and free_irq calls are replaced with notifier_add and notifier_del. I have also changed the code a bit to call the notifier_add and notifier_del inside the spinlock area as the callbacks are found via hp->ops. Changes since last version: o remove ifdef o reintroduce "irq_requested" as "notified" o cleanups, sparse.. I did not move the timer based polling into a separate polling scheme. I played with several variants, but it seems we need to sleep/schedule in a thread even for irq based consoles, as there are throttleing and buffer size constraints. I also kept hvc_struct defined in hvc_console.h so that hvc_irq.c can access the irq_requested element. Feedback is appreciated. virtio_console is currently the only available console for kvm on s390. I plan to push this change as soon as all affected parties agree on it. I would love to get test results from System p, Xen etc. Signed-off-by: Christian Borntraeger Signed-off-by: Rusty Russell

[POWERPC] Rename device_is_compatible to of_device_is_compatible

2007-05-07T10:31:14+00:00

for consistency with other Open Firmware interfaces (and Sparc). This is just a straight replacement. This leaves the compatibility define in place. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras

[POWERPC] Rename get_property to of_get_property: partial drivers

2007-04-27T05:51:56+00:00

This does drivers/machintosh and the hvc code. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras