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| author | Dan Carpenter <error27@gmail.com> | 2010-05-24 14:33:49 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-07-05 11:15:51 -0700 |
| commit | b21fd1baa423415ee806fee4cdfe473c020522d4 (patch) | |
| tree | 192e4bd3dc869b8416008f6837abcc45b3c51027 /firmware/tehuti | |
| parent | cd2a3526aaf029ee3eb384a23f3645c6f7f74adc (diff) | |
| download | kernel-crypto-b21fd1baa423415ee806fee4cdfe473c020522d4.tar.gz kernel-crypto-b21fd1baa423415ee806fee4cdfe473c020522d4.tar.xz kernel-crypto-b21fd1baa423415ee806fee4cdfe473c020522d4.zip | |
rtc-cmos: do dev_set_drvdata() earlier in the initialization
commit 6ba8bcd457d9fc793ac9435aa2e4138f571d4ec5 upstream.
The bug is an oops when dev_get_drvdata() returned null in
cmos_update_irq_enable(). The call tree looks like this:
rtc_dev_ioctl()
=> rtc_update_irq_enable()
=> cmos_update_irq_enable()
It's caused by a race condition in the module initialization. It is
rtc_device_register() which makes the ioctl operations live so I moved
the call to dev_set_drvdata() before the call to rtc_device_register().
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=15963
Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Tested-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: Malte Schroder <maltesch@gmx.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'firmware/tehuti')
0 files changed, 0 insertions, 0 deletions