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* tty: Fix PPP hang under loadAlan Cox2009-01-021-9/+21
| | | | | Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* try harder to load tty ldisc driverEugeniy Meshcheryakov2008-08-011-1/+1
| | | | | | | | | | | | | | | | | | Currently function tty_ldisc_get() tries to load an ldisc driver module only when tty_ldisc_try_get() returns -EAGAIN. This happens only if module is being unloaded. If ldisc module is not loaded tty_ldisc_try_get() returns -EINVAL and this case is not handled in tty_ldisc_get(), so request_module() is not called. Attached patch fixes this by calling request_module() if tty_ldisc_try_get() returned any error code. I discovered this when my UMTS modem stopped working with 2.6.27-rc1 because module ppp_async was not loaded. Signed-off-by: Eugeniy Meshcheryakov <eugen@debian.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Split ldisc code into its own fileAlan Cox2008-07-221-0/+714
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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