linux_dsm_epyc7002/drivers/rtc
David Brownell 5ad31a5751 rtc: remove BKL for ioctl()
Remove implicit use of BKL in ioctl() from the RTC framework.

Instead, the rtc->ops_lock is used.  That's the same lock that already
protects the RTC operations when they're issued through the exported
rtc_*() calls in drivers/rtc/interface.c ...  making this a bugfix, not
just a cleanup, since both ioctl calls and set_alarm() need to update IRQ
enable flags and that implies a common lock (which RTC drivers as a rule
do not provide on their own).

A new comment at the declaration of "struct rtc_class_ops" summarizes
current locking rules.  It's not clear to me that the exceptions listed
there should exist ...  if not, those are pre-existing problems which can
be fixed in a patch that doesn't relate to BKL removal.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jonathan Corbet <corbet@lwn.net>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:33 -07:00
..
class.c
hctosys.c
interface.c Driver Core: add ability for class_find_device to start in middle of list 2008-07-21 21:54:47 -07:00
Kconfig
Makefile
rtc-at32ap700x.c
rtc-at91rm9200.c
rtc-at91sam9.c
rtc-bfin.c
rtc-cmos.c
rtc-core.h
rtc-dev.c rtc: remove BKL for ioctl() 2008-07-24 10:47:33 -07:00
rtc-ds1216.c
rtc-ds1302.c
rtc-ds1307.c
rtc-ds1374.c
rtc-ds1511.c
rtc-ds1553.c
rtc-ds1672.c
rtc-ds1742.c
rtc-ep93xx.c
rtc-fm3130.c
rtc-isl1208.c
rtc-lib.c
rtc-m41t80.c rtc: m41t80: use pr_info() as appropriate 2008-07-24 10:47:33 -07:00
rtc-m48t59.c
rtc-m48t86.c
rtc-max6900.c
rtc-max6902.c
rtc-omap.c
rtc-pcf8563.c
rtc-pcf8583.c
rtc-pl030.c
rtc-pl031.c
rtc-ppc.c
rtc-proc.c
rtc-r9701.c
rtc-rs5c313.c
rtc-rs5c348.c
rtc-rs5c372.c
rtc-s3c.c
rtc-s35390a.c
rtc-sa1100.c
rtc-sh.c
rtc-stk17ta8.c
rtc-sysfs.c
rtc-test.c
rtc-v3020.c
rtc-vr41xx.c
rtc-x1205.c