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vcs: invoke the vt update callback when /dev/vcs* is written to

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A notifier chain is called whenever the vt code modifies a terminal
content, except for one case which is when the modification comes
through writes to /dev/vcs* devices.  Let's add the missing notifier
invocation at the end of vcs_write() for that case too.

Signed-off-by: Nicolas Pitre <nicolas.pitre@canonical.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Nicolas Pitre 2010-10-01 00:10:44 -04:00 • committed by Greg Kroah-Hartman
parent 47725ac76f
commit 432c9ed22a
3 changed files with 8 additions and 0 deletions
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2
drivers/char/vc_screen.c
View file

@ -538,6 +538,8 @@ vcs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
} }
*ppos += written; *ppos += written;
ret = written; ret = written;
if (written)
vcs_scr_updated(vc);
unlock_out: unlock_out:
release_console_sem(); release_console_sem();

5
drivers/char/vt.c
View file

@ -4182,6 +4182,11 @@ void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org)
} }
} }
void vcs_scr_updated(struct vc_data *vc)
{
notify_update(vc);
}
/* /*
* Visible symbols for modules * Visible symbols for modules
*/ */

1
include/linux/selection.h
View file

@ -39,5 +39,6 @@ extern void putconsxy(struct vc_data *vc, unsigned char *p);
extern u16 vcs_scr_readw(struct vc_data *vc, const u16 *org); extern u16 vcs_scr_readw(struct vc_data *vc, const u16 *org);
extern void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org); extern void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org);
extern void vcs_scr_updated(struct vc_data *vc);
#endif #endif