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David Brownell 25d5cb4b03 spi: remove some spidev oops-on-rmmod paths 
Somehow the spidev code forgot to include a critical mechanism: when the
underlying device is removed (e.g.  spi_master rmmod), open file
descriptors must be prevented from issuing new I/O requests to that
device.  On penalty of the oopsing reported by Sebastian Siewior
<bigeasy@tglx.de> ...

This is a partial fix, adding handshaking between the lower level (SPI
messaging) and the file operations using the spi_dev.  (It also fixes an
issue where reads and writes didn't return the number of bytes sent or
received.)

There's still a refcounting issue to be addressed (separately).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Reported-by: Sebastian Siewior <bigeasy@tglx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:14 -07:00
..
accessibility Kconfig: improved help for CONFIG_ACCESSIBILITY 2008-05-08 10:46:55 -07:00
acorn/char
acpi acpi: fix integer as NULL pointer warning 2008-05-23 08:11:06 -07:00
amba
ata drivers/ata: trim trailing whitespace 2008-05-19 17:56:10 -04:00
atm drivers/atm/: remove CVS keywords 2008-05-20 14:52:25 -07:00
auxdisplay
base Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-05-20 17:23:03 -07:00
block brd: don't show ramdisks in /proc/partitions 2008-05-24 09:56:11 -07:00
bluetooth hci_usb.h: fix hard-to-trigger race 2008-05-02 16:45:10 -07:00
cdrom [POWERPC] iSeries: Remove unused mail address 2008-05-23 16:45:04 +10:00
char ip2: fix crashes on load/unload 2008-05-24 09:56:11 -07:00
clocksource
connector
cpufreq [CPUFREQ] clarify license of freq_table.c 2008-05-22 16:38:03 -04:00
cpuidle
crypto
dca
dio
dma iop-adma: fixup some kzalloc/memset confusions 2008-05-20 13:51:20 -07:00
edac edac: mpc85xx: fix building as a module 2008-05-24 09:56:13 -07:00
eisa
firewire firewire: prevent userspace from accessing shut down devices 2008-05-20 18:24:17 +02:00
firmware edd: add default mode CONFIG_EDD_OFF=n, override with edd={on,off} 2008-04-29 08:06:23 -07:00
gpio gpiolib: fix off by one errors 2008-05-24 09:56:11 -07:00
hid HID: remove CVS keywords 2008-05-20 16:44:43 +02:00
hwmon ibmaem: new driver for power/energy/temp meters in IBM System X hardware 2008-05-24 09:56:08 -07:00
i2c i2c/max6875: Really prevent 24RF08 corruption 2008-05-18 20:49:41 +02:00
ide ide: fix race in device_create 2008-05-20 13:31:54 -07:00
ieee1394 ieee1394: sbp2: use correct size of command descriptor block 2008-05-20 18:24:17 +02:00
infiniband Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2008-05-23 11:11:44 -07:00
input MODULE_LICENSE expects "GPL v2", not "GPLv2" 2008-05-21 16:56:00 -07:00
isdn isdn: fix integer as NULL pointer warning 2008-05-23 08:11:06 -07:00
leds LEDS: fix race in device_create 2008-05-20 13:31:55 -07:00
lguest lguest: make Launcher see device status updates 2008-05-02 21:50:54 +10:00
macintosh [POWERPC] macintosh: Replace deprecated __initcall with device_initcall 2008-05-15 20:50:00 +10:00
mca proc: remove proc_root from drivers 2008-04-29 08:06:18 -07:00
md md: restart recovery cleanly after device failure. 2008-05-24 09:56:10 -07:00
media missing dependencies on HAS_DMA 2008-05-21 16:55:59 -07:00
memstick
message Remove duplicated unlikely() in IS_ERR() 2008-04-29 08:06:25 -07:00
mfd HTC_EGPIO is ARM-only 2008-05-21 16:56:00 -07:00
misc drivers/misc/sgi-xp: replace partid_t with a short 2008-05-13 08:02:23 -07:00
mmc missing dependencies on HAS_DMA 2008-05-21 16:55:59 -07:00
mtd mtd: solutionengine flash map depends on solution engine mach group. 2008-05-08 19:51:40 +09:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-05-21 22:14:39 -07:00
nubus proc: convert /proc/bus/nubus to seq_file interface 2008-04-29 08:06:19 -07:00
of [POWERPC] Add null pointer check to of_find_property 2008-05-15 20:49:49 +10:00
oprofile oprofile: don't request cache line alignment for cpu_buffer 2008-05-14 19:11:12 -07:00
parisc drivers/parisc: replace remaining __FUNCTION__ occurrences 2008-05-15 10:38:54 -04:00
parport debugobjects: add timer specific object debugging code 2008-04-30 08:29:53 -07:00
pci Clean up 'print_fn_descriptor_symbol()' types 2008-05-15 17:50:37 -07:00
pcmcia pcmcia: replace remaining __FUNCTION__ occurrences 2008-05-01 08:04:00 -07:00
pnp Clean up 'print_fn_descriptor_symbol()' types 2008-05-15 17:50:37 -07:00
power Power Supply: fix race in device_create 2008-05-20 13:31:55 -07:00
ps3 [POWERPC] PS3: Remove unsupported wakeup sources 2008-05-02 15:00:44 +10:00
rapidio [RAPIDIO] Auto-probe the RapidIO system size 2008-04-29 19:40:28 +10:00
rtc rtc: m41t80: include <linux/kernel.h> for printk() 2008-05-13 08:02:26 -07:00
s390 s390: fix race in device_create 2008-05-20 13:31:56 -07:00
sbus sbus bpp: instances missed in s/dev_name/bpp_dev_name/ 2008-05-21 16:55:59 -07:00
scsi scsi: fix integer as NULL pointer warning 2008-05-23 08:11:07 -07:00
serial serial: fix enable_irq_wake/disable_irq_wake imbalance in serial_core.c 2008-05-24 09:56:11 -07:00
sh
sn
spi spi: remove some spidev oops-on-rmmod paths 2008-05-24 09:56:14 -07:00
ssb
tc
telephony
thermal thermal: re-name thermal.c to thermal_sys.c 2008-04-29 03:12:17 -04:00
uio UIO: fix race in device_create 2008-05-20 13:31:55 -07:00
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2008-05-20 17:20:49 -07:00
video S3C2410: fix driver MODULE_ALIAS() 2008-05-24 09:56:13 -07:00
virtio virtio: explicit advertisement of driver features 2008-05-02 21:50:50 +10:00
w1 drivers: replace remaining __FUNCTION__ occurrences 2008-04-30 08:29:53 -07:00
watchdog
xen
zorro zorro: use non-racy method for proc entries creation 2008-04-29 08:06:21 -07:00
Kconfig Basic braille screen reader support 2008-04-30 08:29:52 -07:00
Makefile Basic braille screen reader support 2008-04-30 08:29:52 -07:00