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d56e4f7534
linux/drivers/char
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Jarkko Sakkinen d56e4f7534 tpm: fix compat 'ppi' link handling in tpm_chip_register() 
__compat_only_sysfs_link_entry_to_kobj() was unconditionally called for
TPM1 chips, which caused crash on Acer C720 laptop where DSM for the
ACPI object did not exist.

There are two reasons for unwanted behavior:

* The code did not check whether
  __compat_only_sysfs_link_entry_to_kobj() returned -ENOENT. This is
  OK. It just meanst that ppi is not available.
* The code did not clean up properly. Compat link should added only
  after all other init is done.

This patch sorts out these issues.

Fixes: 9b774d5cf2
Reported-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jeremiah Mahler <jmmahler@gmail.com>
Acked-by: Peter Huewe <PeterHuewe@gmx.de>
2015-11-09 17:52:56 +02:00
..
agp Merge tag 'drm-intel-fixes-2015-07-15' into drm-intel-next-queued 2015-07-15 16:36:50 +02:00
hw_random hwrng: xgene - fix handling platform_get_irq 2015-09-21 22:57:37 +08:00
ipmi ipmi:ssif: Add a module parm to specify that SMBus alerts don't work 2015-09-03 15:02:31 -05:00
mwave drivers/char: delete non-required instances of include <linux/init.h> 2014-02-07 15:10:19 -08:00
pcmcia Char/Misc driver patches for 4.2-rc1 2015-06-26 14:51:15 -07:00
tpm tpm: fix compat 'ppi' link handling in tpm_chip_register() 2015-11-09 17:52:56 +02:00
xilinx_hwicap char:xilinx_hwicap:buffer_icap - change 1/0 to true/false for bool type variable in function buffer_icap_set_configuration(). 2015-06-12 16:58:33 -07:00
xillybus char: xillybus: Allow 64-bit DMA on PCIe interface 2015-08-05 12:27:09 -07:00
apm-emulation.c apm-emulation: add hibernation APM events to support suspend2disk 2014-01-07 13:50:28 +01:00
applicom.c applicom: dereferencing NULL on error path 2014-05-27 17:43:12 -07:00
applicom.h
bfin-otp.c
bsr.c bsr: avoid format string leaking into device name 2014-07-09 16:59:15 -07:00
ds1302.c
ds1620.c ds1620: single_open() leak 2013-05-05 00:11:29 -04:00
dsp56k.c drivers/char/dsp56k.c: drop check for negativity of unsigned parameter 2014-07-17 18:38:37 -07:00
dtlk.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
efirtc.c rtc: single_open() leaks 2013-05-05 00:12:29 -04:00
generic_nvram.c
genrtc.c rtc: single_open() leaks 2013-05-05 00:12:29 -04:00
hangcheck-timer.c hangcheck-timer: cleanup casting in hangcheck_init() 2014-11-07 11:24:01 -08:00
hpet.c ACPICA: Resources: Provide common part for struct acpi_resource_address structures. 2015-01-26 16:09:56 +01:00
Kconfig drivers/char: Remove msm_smd_pkt driver 2015-05-24 12:24:35 -07:00
lp.c char: Int overflow in lp_do_ioctl(). 2013-12-18 16:39:54 -08:00
Makefile hwmon: Rename i8k driver to dell-smm-hwmon and move it to hwmon tree 2015-05-24 12:48:12 -07:00
mbcs.c
mbcs.h
mem.c switch drivers/char/mem.c to ->read_iter/->write_iter 2015-04-11 22:29:40 -04:00
misc.c char: make misc_deregister a void function 2015-08-05 10:35:49 -07:00
mmtimer.c
mspec.c char: Use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT 2013-05-21 10:07:54 -07:00
nsc_gpio.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
nvram.c char/nvram: Use bitwise OR to obtain Atari video mode data 2015-08-05 13:30:16 -07:00
nwbutton.c char: nwbutton: open-code interruptible_sleep_on 2014-01-08 15:29:52 -08:00
nwbutton.h
nwflash.c
pc8736x_gpio.c
ppdev.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
ps3flash.c ps3flash: switch to generic_file_llseek_size() 2013-06-29 12:57:33 +04:00
random.c random: Remove kernel blocking API 2015-06-10 19:14:04 +08:00
raw.c writeback: separate out include/linux/backing-dev-defs.h 2015-06-02 08:33:34 -06:00
rtc.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
scx200_gpio.c
snsc_event.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
snsc.c snsc: pass timeout as HZ independent value 2015-06-01 10:29:50 +09:00
snsc.h
sonypi.c char: drop owner assignment from platform_drivers 2014-10-20 16:20:19 +02:00
tb0219.c char: drop owner assignment from platform_drivers 2014-10-20 16:20:19 +02:00
tile-srom.c fs: move struct kiocb to fs.h 2015-03-25 20:28:11 -04:00
tlclk.c tlclk: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
toshiba.c toshiba laptop: replace ioremap_cache with ioremap 2015-08-05 17:26:00 -07:00
ttyprintk.c ttyprintk: Allow built as a module 2014-04-16 14:21:06 -07:00
uv_mmtimer.c
virtio_console.c virtio_console: silence a static checker warning 2015-05-24 12:24:35 -07:00