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Eugeniy Meshcheryakov 3ab36ab685 try harder to load tty ldisc driver 
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>
 		2008-08-01 12:50:15 -07:00
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accessibility
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acpi Remove newline from the description of module parameters 2008-08-01 12:46:41 -07:00
amba
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ata pata_it821x: Driver updates and reworking 2008-07-31 02:04:50 -04:00
atm atm: fix direct casts of pointers to u32 in the InterPhase driver 2008-07-30 16:33:05 -07:00
auxdisplay
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base Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-08-01 11:52:39 -07:00
block Remove newline from the description of module parameters 2008-08-01 12:46:41 -07:00
bluetooth bluetooth: add quirks for a few hci_usb devices 2008-07-30 17:19:35 -07:00
cdrom sh: More header path fixups for mach dir refactoring. 2008-07-29 22:10:01 +09:00
char try harder to load tty ldisc driver 2008-08-01 12:50:15 -07:00
clocksource
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connector
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cpufreq cpufreq acpi: only call _PPC after cpufreq ACPI init funcs got called already 2008-07-30 09:41:43 -07:00
cpuidle ACPI/CPUIDLE: prevent setting pm_idle to NULL 2008-07-28 08:31:58 -07:00
crypto
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dca
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dio
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dma
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edac
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eisa
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firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2008-07-27 10:24:06 -07:00
firmware iscsi_ibft_find: fix modpost warning 2008-07-30 09:41:44 -07:00
gpio
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gpu Remove newline from the description of module parameters 2008-08-01 12:46:41 -07:00
hid
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hwmon Merge branch 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6 2008-08-01 11:33:19 -07:00
i2c i2c: Blackfin I2C Driver: Functional power management support 2008-07-28 12:41:03 +01:00
ide ide/powermac: Fix use of uninitialized pointer on media-bay 2008-07-30 15:26:53 +10:00
ieee1394
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infiniband Remove newline from the description of module parameters 2008-08-01 12:46:41 -07:00
input sh: More header path fixups for mach dir refactoring. 2008-07-29 22:10:01 +09:00
isdn hysdn: remove the packed attribute from PofTimStamp_tag 2008-07-30 16:48:05 -07:00
leds
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lguest lguest: use cpu capability accessors 2008-07-29 09:58:34 +10:00
macintosh
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mca
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md Merge branch 'for-linus' of git://neil.brown.name/md 2008-08-01 11:56:07 -07:00
media Merge branch 'zero-len' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6 2008-08-01 12:47:53 -07:00
memstick
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message Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-07-27 10:04:52 -07:00
mfd mfd: accept pure device as a parent, not only platform_device 2008-07-29 01:30:26 +02:00
misc add reverse dependency of CONFIG_SGI_XP upon CONFIG_SGI_GRU 2008-08-01 12:26:03 -07:00
mmc au1xmmc: raise segment size limit. 2008-08-01 19:04:26 +02:00
mtd Merge git://git.infradead.org/mtd-2.6 2008-08-01 11:29:54 -07:00
net Remove newline from the description of module parameters 2008-08-01 12:46:41 -07:00
nubus
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of
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oprofile
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parisc
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parport
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pci PCI: add D3 power state avoidance quirk 2008-07-28 15:12:11 -07:00
pcmcia
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pnp PNP: fix formatting of dbg_pnp_show_resources() output 2008-08-01 12:46:41 -07:00
power Merge branch 'master' of /home/cbou/linux-2.6 2008-07-30 02:05:23 +04:00
ps3
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rapidio
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regulator regulator: TI bq24022 Li-Ion Charger driver 2008-07-30 10:10:23 +01:00
rtc rtc-dev: stop periodic interrupts on device release 2008-07-30 09:41:47 -07:00
s390 [S390] qeth: avoid use of include/asm-s390 2008-08-01 16:39:36 +02:00
sbus
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scsi [SCSI] qla2xxx: fix msleep compile error 2008-07-28 10:13:22 -05:00
serial Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2008-08-01 10:53:43 -07:00
sh sh/maple: clean maple bus code 2008-07-29 22:10:56 +09:00
sn
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spi spi_s3c24xx: really assign busnum 2008-07-28 16:30:21 -07:00
ssb
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tc
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telephony
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thermal
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uio
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usb USB: m66592-udc: Fix up dev_set_name() badness. 2008-07-30 09:41:46 -07:00
video Remove newline from the description of module parameters 2008-08-01 12:46:41 -07:00
virtio
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w1
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watchdog hpwdt: don't use static flags 2008-07-30 09:41:45 -07:00
xen
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zorro
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Kconfig
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Makefile regulator: core kbuild files 2008-07-30 10:10:22 +01:00